mirror of
https://github.com/libretro/scummvm.git
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1225 lines
34 KiB
C++
1225 lines
34 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/util.h"
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#include "common/system.h"
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#include "common/events.h"
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#include "graphics/surface.h"
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#include "graphics/colormasks.h"
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#include "gui/ThemeRenderer.h"
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#include "graphics/VectorRenderer.h"
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#define VECTOR_RENDERER_FAST_TRIANGLES
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namespace Graphics {
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VectorRenderer *createRenderer(int mode) {
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switch (mode) {
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case GUI::ThemeRenderer::kGfxStandard16bit:
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return new VectorRendererSpec<uint16, ColorMasks<565> >;
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case GUI::ThemeRenderer::kGfxAntialias16bit:
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return new VectorRendererAA<uint16, ColorMasks<565> >;
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default:
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return 0;
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}
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}
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/********************************************************************
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* DRAWSTEP handling functions
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********************************************************************/
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void VectorRenderer::drawStep(const Common::Rect &area, const DrawStep &step, uint32 extra) {
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if (step.bgColor.set)
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setBgColor(step.bgColor.r, step.bgColor.g, step.bgColor.b);
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if (step.fgColor.set)
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setFgColor(step.fgColor.r, step.fgColor.g, step.fgColor.b);
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if (step.gradColor1.set && step.gradColor2.set)
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setGradientColors(step.gradColor1.r, step.gradColor1.g, step.gradColor1.b,
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step.gradColor2.r, step.gradColor2.g, step.gradColor2.b);
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setShadowOffset(_disableShadows ? 0 : step.shadow);
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setGradientFactor(step.factor);
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setStrokeWidth(step.stroke);
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setFillMode((FillMode)step.fillMode);
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_dynamicData = extra;
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(this->*(step.drawingCall))(area, step);
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}
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void VectorRenderer::textStep(const Common::String &text, const Common::Rect &area, const TextStep &step, GUI::Theme::TextAlign alignH) {
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if (step.color.set)
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setFgColor(step.color.r, step.color.g, step.color.b);
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drawString(step.font, text.c_str(), area,
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!step.hasAlign ? alignH : step.alignHorizontal,
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!step.hasAlign ? GUI::Theme::kTextAlignVTop : step.alignVertical);
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}
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/********************************************************************
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* MISCELANEOUS functions
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********************************************************************/
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/** Fixed point SQUARE ROOT **/
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inline uint32 fp_sqroot(uint32 x) {
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register uint32 root, remHI, remLO, testDIV, count;
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root = 0;
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remHI = 0;
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remLO = x;
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count = 23;
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do {
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remHI = (remHI << 2) | (remLO >> 30);
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remLO <<= 2;
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root <<= 1;
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testDIV = (root << 1) + 1;
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if (remHI >= testDIV) {
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remHI -= testDIV;
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root++;
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}
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} while (count--);
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return root;
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}
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/** HELPER MACROS for BESENHALM's circle drawing algorithm **/
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#define __BE_ALGORITHM() { \
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if (f >= 0) { \
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y--; \
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ddF_y += 2; \
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f += ddF_y; \
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py -= pitch; \
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} \
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px += pitch; \
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ddF_x += 2; \
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f += ddF_x + 1; \
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}
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#define __BE_DRAWCIRCLE(ptr1,ptr2,ptr3,ptr4,x,y,px,py) { \
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*(ptr1 + (y) - (px)) = color; \
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*(ptr1 + (x) - (py)) = color; \
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*(ptr2 - (x) - (py)) = color; \
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*(ptr2 - (y) - (px)) = color; \
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*(ptr3 - (y) + (px)) = color; \
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*(ptr3 - (x) + (py)) = color; \
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*(ptr4 + (x) + (py)) = color; \
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*(ptr4 + (y) + (px)) = color; \
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}
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#define __BE_DRAWCIRCLE_XCOLOR(ptr1,ptr2,ptr3,ptr4,x,y,px,py) { \
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*(ptr1 + (y) - (px)) = color1; \
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*(ptr1 + (x) - (py)) = color2; \
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*(ptr2 - (x) - (py)) = color2; \
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*(ptr2 - (y) - (px)) = color1; \
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*(ptr3 - (y) + (px)) = color3; \
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*(ptr3 - (x) + (py)) = color4; \
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*(ptr4 + (x) + (py)) = color4; \
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*(ptr4 + (y) + (px)) = color3; \
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}
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#define __BE_RESET() { \
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f = 1 - r; \
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ddF_x = 0; ddF_y = -2 * r; \
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x = 0; y = r; px = 0; py = pitch * r; \
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}
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/** HELPER MACROS for WU's circle drawing algorithm **/
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#define __WU_DRAWCIRCLE(ptr1,ptr2,ptr3,ptr4,x,y,px,py,a) { \
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blendPixelPtr(ptr1 + (y) - (px), color, a); \
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blendPixelPtr(ptr1 + (x) - (py), color, a); \
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blendPixelPtr(ptr2 - (x) - (py), color, a); \
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blendPixelPtr(ptr2 - (y) - (px), color, a); \
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blendPixelPtr(ptr3 - (y) + (px), color, a); \
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blendPixelPtr(ptr3 - (x) + (py), color, a); \
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blendPixelPtr(ptr4 + (x) + (py), color, a); \
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blendPixelPtr(ptr4 + (y) + (px), color, a); \
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}
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#define __WU_ALGORITHM() { \
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oldT = T; \
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T = fp_sqroot(rsq - ((y * y) << 16)) ^ 0xFFFF; \
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py += p; \
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if (T < oldT) { \
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x--; px -= p; \
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} \
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a2 = (T >> 8); \
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a1 = ~a2; \
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}
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#define __TRIANGLE_MAINX() \
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if (error_term >= 0) { \
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ptr_right += pitch; \
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ptr_left += pitch; \
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error_term += dysub; \
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} else { \
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error_term += ddy; \
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} \
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ptr_right++; \
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ptr_left--;
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#define __TRIANGLE_MAINY() \
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if (error_term >= 0) { \
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ptr_right++; \
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ptr_left--; \
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error_term += dxsub; \
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} else { \
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error_term += ddx; \
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} \
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ptr_right += pitch; \
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ptr_left += pitch;
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/********************************************************************
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* Primitive shapes drawing - Public API calls - VectorRendererSpec
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********************************************************************/
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template <typename PixelType, typename PixelFormat>
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void VectorRendererSpec<PixelType, PixelFormat>::
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drawString(const Graphics::Font *font, const Common::String &text, const Common::Rect &area,
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GUI::Theme::TextAlign alignH, GUI::Theme::TextAlignVertical alignV) {
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int offset = 0;
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switch (alignV) {
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case GUI::Theme::kTextAlignVCenter:
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offset = area.top + (area.height() - font->getFontHeight()) / 2;
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break;
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case GUI::Theme::kTextAlignVBottom:
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offset = area.bottom - font->getFontHeight();
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break;
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case GUI::Theme::kTextAlignVTop:
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offset = area.top;
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break;
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}
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font->drawString(_activeSurface, text, area.left, offset, area.width(), _fgColor, (Graphics::TextAlignment)alignH, 0, false);
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}
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/** LINES **/
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template<typename PixelType, typename PixelFormat>
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void VectorRendererSpec<PixelType, PixelFormat>::
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drawLine(int x1, int y1, int x2, int y2) {
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x1 = CLIP(x1, 0, (int)Base::_activeSurface->w);
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x2 = CLIP(x2, 0, (int)Base::_activeSurface->w);
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y1 = CLIP(y1, 0, (int)Base::_activeSurface->h);
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y2 = CLIP(y2, 0, (int)Base::_activeSurface->h);
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// we draw from top to bottom
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if (y2 < y1) {
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SWAP(x1, x2);
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SWAP(y1, y2);
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}
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int dx = ABS(x2 - x1);
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int dy = ABS(y2 - y1);
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// this is a point, not a line. stoopid.
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if (dy == 0 && dx == 0)
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return;
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if (Base::_strokeWidth == 0)
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return;
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PixelType *ptr = (PixelType *)_activeSurface->getBasePtr(x1, y1);
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int pitch = Base::surfacePitch();
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if (dy == 0) { // horizontal lines
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// these can be filled really fast with a single memset.
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colorFill(ptr, ptr + dx + 1, (PixelType)_fgColor);
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} else if (dx == 0) { // vertical lines
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// these ones use a static pitch increase.
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while (y1++ <= y2) {
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*ptr = (PixelType)_fgColor;
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ptr += pitch;
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}
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} else if (ABS(dx) == ABS(dy)) { // diagonal lines
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// these ones also use a fixed pitch increase
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pitch += (x2 > x1) ? 1 : -1;
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while (dy--) {
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*ptr = (PixelType)_fgColor;
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ptr += pitch;
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}
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} else { // generic lines, use the standard algorithm...
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drawLineAlg(x1, y1, x2, y2, dx, dy, (PixelType)_fgColor);
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}
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}
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/** CIRCLES **/
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template<typename PixelType, typename PixelFormat>
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void VectorRendererSpec<PixelType, PixelFormat>::
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drawCircle(int x, int y, int r) {
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if (x + r > Base::_activeSurface->w || y + r > Base::_activeSurface->h ||
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x - r < 0 || y - r < 0 || x == 0 || y == 0 || r <= 0)
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return;
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if (Base::_fillMode != kFillDisabled && Base::_shadowOffset
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&& x + r + Base::_shadowOffset < Base::_activeSurface->w
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&& y + r + Base::_shadowOffset < Base::_activeSurface->h) {
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drawCircleAlg(x + Base::_shadowOffset + 1, y + Base::_shadowOffset + 1, r, 0, kFillForeground);
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}
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switch (Base::_fillMode) {
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case kFillDisabled:
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if (Base::_strokeWidth)
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drawCircleAlg(x, y, r, _fgColor, kFillDisabled);
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break;
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case kFillForeground:
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drawCircleAlg(x, y, r, _fgColor, kFillForeground);
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break;
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case kFillBackground:
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if (Base::_strokeWidth > 1) {
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drawCircleAlg(x, y, r, _fgColor, kFillForeground);
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drawCircleAlg(x, y, r - Base::_strokeWidth, _bgColor, kFillBackground);
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} else {
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drawCircleAlg(x, y, r, _bgColor, kFillBackground);
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drawCircleAlg(x, y, r, _fgColor, kFillDisabled);
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}
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break;
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case kFillGradient:
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break;
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}
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}
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/** SQUARES **/
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template<typename PixelType, typename PixelFormat>
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void VectorRendererSpec<PixelType, PixelFormat>::
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drawSquare(int x, int y, int w, int h) {
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if (x + w > Base::_activeSurface->w || y + h > Base::_activeSurface->h ||
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w <= 0 || h <= 0 || x < 0 || y < 0)
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return;
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if (Base::_fillMode != kFillDisabled && Base::_shadowOffset
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&& x + w + Base::_shadowOffset < Base::_activeSurface->w
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&& y + h + Base::_shadowOffset < Base::_activeSurface->h) {
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drawSquareShadow(x, y, w, h, Base::_shadowOffset);
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}
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switch (Base::_fillMode) {
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case kFillDisabled:
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if (Base::_strokeWidth)
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drawSquareAlg(x, y, w, h, _fgColor, kFillDisabled);
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break;
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case kFillForeground:
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drawSquareAlg(x, y, w, h, _fgColor, kFillForeground);
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break;
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case kFillBackground:
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drawSquareAlg(x, y, w, h, _bgColor, kFillBackground);
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drawSquareAlg(x, y, w, h, _fgColor, kFillDisabled);
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break;
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case kFillGradient:
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VectorRendererSpec::drawSquareAlg(x, y, w, h, 0, kFillGradient);
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if (Base::_strokeWidth)
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drawSquareAlg(x, y, w, h, _fgColor, kFillDisabled);
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break;
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}
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}
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/** ROUNDED SQUARES **/
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template<typename PixelType, typename PixelFormat>
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void VectorRendererSpec<PixelType, PixelFormat>::
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drawRoundedSquare(int x, int y, int r, int w, int h) {
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if (x + w > Base::_activeSurface->w || y + h > Base::_activeSurface->h ||
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w <= 0 || h <= 0 || x < 0 || y < 0 || (r << 1) > w || (r << 1) > h)
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return;
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if (Base::_fillMode != kFillDisabled && Base::_shadowOffset
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&& x + w + Base::_shadowOffset < Base::_activeSurface->w
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&& y + h + Base::_shadowOffset < Base::_activeSurface->h) {
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drawRoundedSquareShadow(x, y, r, w, h, Base::_shadowOffset);
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}
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switch (Base::_fillMode) {
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case kFillDisabled:
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if (Base::_strokeWidth)
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drawRoundedSquareAlg(x, y, r, w, h, _fgColor, kFillDisabled);
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break;
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case kFillForeground:
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drawRoundedSquareAlg(x, y, r, w, h, _fgColor, kFillForeground);
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break;
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case kFillBackground:
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VectorRendererSpec::drawRoundedSquareAlg(x, y, r, w, h, _bgColor, kFillBackground);
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drawRoundedSquareAlg(x, y, r, w, h, _fgColor, kFillDisabled);
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break;
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case kFillGradient:
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if (Base::_strokeWidth > 1) {
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drawRoundedSquareAlg(x, y, r, w, h, _fgColor, kFillForeground);
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VectorRendererSpec::drawRoundedSquareAlg(x + Base::_strokeWidth/2, y + Base::_strokeWidth/2,
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r - Base::_strokeWidth/2, w - Base::_strokeWidth, h - Base::_strokeWidth, 0, kFillGradient);
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} else {
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VectorRendererSpec::drawRoundedSquareAlg(x, y, r, w, h, 0, kFillGradient);
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if (Base::_strokeWidth)
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drawRoundedSquareAlg(x, y, r, w, h, _fgColor, kFillDisabled);
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}
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break;
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}
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}
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template<typename PixelType, typename PixelFormat>
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void VectorRendererSpec<PixelType, PixelFormat>::
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drawTab(int x, int y, int r, int w, int h) {
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if (x + w > Base::_activeSurface->w || y + h > Base::_activeSurface->h ||
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w <= 0 || h <= 0 || x < 0 || y < 0 || (r << 1) > w || (r << 1) > h)
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return;
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switch (Base::_fillMode) {
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case kFillDisabled:
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return;
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case kFillGradient:
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case kFillBackground:
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drawTabAlg(x, y, w, h, r, (Base::_fillMode == kFillBackground) ? _bgColor : _fgColor, Base::_fillMode);
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if (Base::_strokeWidth)
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drawTabAlg(x, y, w, h, r, _fgColor, kFillDisabled, (Base::_dynamicData >> 16), (Base::_dynamicData & 0xFFFF));
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break;
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case kFillForeground:
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drawTabAlg(x, y, w, h, r, (Base::_fillMode == kFillBackground) ? _bgColor : _fgColor, Base::_fillMode);
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break;
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}
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}
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template<typename PixelType, typename PixelFormat>
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void VectorRendererSpec<PixelType, PixelFormat>::
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drawTriangle(int x, int y, int w, int h, TriangleOrientation orient) {
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// Awesome hack: the AA messes up the last pixel triangles if their width is even
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// ...fix the width instead of fixing the AA :p
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if (w % 2 == 0) {
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w++; h++;
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}
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if (x + w > Base::_activeSurface->w || y + h > Base::_activeSurface->h)
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return;
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PixelType color = 0;
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if (Base::_strokeWidth <= 1) {
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if (Base::_fillMode == kFillForeground)
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color = _fgColor;
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else if (Base::_fillMode == kFillBackground)
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color = _bgColor;
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} else {
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if (Base::_fillMode == kFillDisabled)
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return;
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color = _fgColor;
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}
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switch(orient) {
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case kTriangleUp:
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case kTriangleDown:
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#ifdef VECTOR_RENDERER_FAST_TRIANGLES
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if (w == h)
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drawTriangleFast(x, y, w, (orient == kTriangleDown), color, Base::_fillMode);
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else
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#endif
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drawTriangleVertAlg(x, y, w, h, (orient == kTriangleDown), color, Base::_fillMode);
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break;
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case kTriangleLeft:
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case kTriangleRight:
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break;
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}
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if (Base::_strokeWidth > 0)
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if (Base::_fillMode == kFillBackground || Base::_fillMode == kFillGradient) {
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#ifdef VECTOR_RENDERER_FAST_TRIANGLES
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if (w == h)
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drawTriangleFast(x, y, w, (orient == kTriangleDown), _fgColor, kFillDisabled);
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else
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#endif
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drawTriangleVertAlg(x, y, w, h, (orient == kTriangleDown), _fgColor, kFillDisabled);
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}
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}
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/********************************************************************
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* Aliased Primitive drawing ALGORITHMS - VectorRendererSpec
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********************************************************************/
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/** TAB ALGORITHM - NON AA */
|
|
template<typename PixelType, typename PixelFormat>
|
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void VectorRendererSpec<PixelType, PixelFormat>::
|
|
drawTabAlg(int x1, int y1, int w, int h, int r, PixelType color, VectorRenderer::FillMode fill_m, int baseLeft, int baseRight) {
|
|
int f, ddF_x, ddF_y;
|
|
int x, y, px, py;
|
|
int pitch = Base::surfacePitch();
|
|
int sw = 0, sp = 0, hp = 0;
|
|
|
|
PixelType *ptr_tl = (PixelType *)Base::_activeSurface->getBasePtr(x1 + r, y1 + r);
|
|
PixelType *ptr_tr = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w - r, y1 + r);
|
|
PixelType *ptr_fill = (PixelType *)Base::_activeSurface->getBasePtr(x1, y1);
|
|
|
|
int real_radius = r;
|
|
int short_h = h - r + 2;
|
|
int long_h = h;
|
|
|
|
if (fill_m == kFillDisabled) {
|
|
while (sw++ < Base::_strokeWidth) {
|
|
colorFill(ptr_fill + sp + r, ptr_fill + w + 1 + sp - r, color);
|
|
colorFill(ptr_fill + hp - sp + r, ptr_fill + w + hp + 1 - sp - r, color);
|
|
sp += pitch;
|
|
|
|
__BE_RESET();
|
|
r--;
|
|
|
|
while (x++ < y) {
|
|
__BE_ALGORITHM();
|
|
*(ptr_tr + (y) - (px)) = color;
|
|
*(ptr_tr + (x) - (py)) = color;
|
|
*(ptr_tl - (x) - (py)) = color;
|
|
*(ptr_tl - (y) - (px)) = color;
|
|
|
|
if (Base::_strokeWidth > 1) {
|
|
*(ptr_tr + (y) - (px - pitch)) = color;
|
|
*(ptr_tr + (x) - (py)) = color;
|
|
*(ptr_tl - (x) - (py)) = color;
|
|
*(ptr_tl - (y) - (px - pitch)) = color;
|
|
}
|
|
}
|
|
}
|
|
|
|
ptr_fill += pitch * real_radius;
|
|
while (short_h--) {
|
|
colorFill(ptr_fill, ptr_fill + Base::_strokeWidth - 1, color);
|
|
colorFill(ptr_fill + w - Base::_strokeWidth + 2, ptr_fill + w, color);
|
|
ptr_fill += pitch;
|
|
}
|
|
|
|
if (baseLeft) {
|
|
sw = 0;
|
|
ptr_fill = (PixelType *)Base::_activeSurface->getBasePtr(x1, y1 + h);
|
|
while (sw++ < Base::_strokeWidth) {
|
|
colorFill(ptr_fill - baseLeft, ptr_fill, color);
|
|
ptr_fill += pitch;
|
|
}
|
|
}
|
|
|
|
if (baseRight) {
|
|
sw = 0;
|
|
ptr_fill = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w, y1 + h);
|
|
while (sw++ < Base::_strokeWidth) {
|
|
colorFill(ptr_fill, ptr_fill + baseRight, color);
|
|
ptr_fill += pitch;
|
|
}
|
|
}
|
|
} else {
|
|
__BE_RESET();
|
|
|
|
PixelType color1, color2;
|
|
color1 = color2 = color;
|
|
|
|
while (x++ < y) {
|
|
__BE_ALGORITHM();
|
|
|
|
if (fill_m == kFillGradient) {
|
|
color1 = calcGradient(real_radius - x, long_h);
|
|
color2 = calcGradient(real_radius - y, long_h);
|
|
}
|
|
|
|
colorFill(ptr_tl - x - py, ptr_tr + x - py, color2);
|
|
colorFill(ptr_tl - y - px, ptr_tr + y - px, color1);
|
|
|
|
*(ptr_tr + (y) - (px)) = color1;
|
|
*(ptr_tr + (x) - (py)) = color2;
|
|
*(ptr_tl - (x) - (py)) = color2;
|
|
*(ptr_tl - (y) - (px)) = color1;
|
|
}
|
|
|
|
ptr_fill += pitch * r;
|
|
while (short_h--) {
|
|
if (fill_m == kFillGradient)
|
|
color = calcGradient(real_radius++, long_h);
|
|
colorFill(ptr_fill, ptr_fill + w + 1, color);
|
|
ptr_fill += pitch;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** SQUARE ALGORITHM **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType, PixelFormat>::
|
|
drawSquareAlg(int x, int y, int w, int h, PixelType color, VectorRenderer::FillMode fill_m) {
|
|
PixelType *ptr = (PixelType *)_activeSurface->getBasePtr(x, y);
|
|
int pitch = Base::surfacePitch();
|
|
int max_h = h;
|
|
|
|
if (fill_m != kFillDisabled) {
|
|
while (h--) {
|
|
if (fill_m == kFillGradient)
|
|
color = calcGradient(max_h - h, max_h);
|
|
|
|
colorFill(ptr, ptr + w, color);
|
|
ptr += pitch;
|
|
}
|
|
} else {
|
|
int sw = Base::_strokeWidth, sp = 0, hp = pitch * (h - 1);
|
|
|
|
while (sw--) {
|
|
colorFill(ptr + sp, ptr + w + sp, color);
|
|
colorFill(ptr + hp - sp, ptr + w + hp - sp, color);
|
|
sp += pitch;
|
|
}
|
|
|
|
while (h--) {
|
|
colorFill(ptr, ptr + Base::_strokeWidth, color);
|
|
colorFill(ptr + w - Base::_strokeWidth, ptr + w, color);
|
|
ptr += pitch;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** SQUARE ALGORITHM **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType, PixelFormat>::
|
|
drawBevelSquareAlg(int x, int y, int w, int h, int bevel, PixelType top_color, PixelType bottom_color) {
|
|
PixelType *ptr_left = (PixelType *)_activeSurface->getBasePtr(x, y);
|
|
int pitch = Base::surfacePitch();
|
|
int i, j;
|
|
|
|
i = bevel;
|
|
while (i--) {
|
|
colorFill(ptr_left, ptr_left + w, top_color);
|
|
ptr_left += pitch;
|
|
}
|
|
|
|
i = h - bevel;
|
|
ptr_left = (PixelType *)_activeSurface->getBasePtr(x, y + bevel);
|
|
while (i--) {
|
|
colorFill(ptr_left, ptr_left + bevel, top_color);
|
|
ptr_left += pitch;
|
|
}
|
|
|
|
i = bevel;
|
|
ptr_left = (PixelType *)_activeSurface->getBasePtr(x, y + h - bevel);
|
|
while (i--) {
|
|
colorFill(ptr_left + i, ptr_left + w, bottom_color);
|
|
ptr_left += pitch;
|
|
}
|
|
|
|
i = h - bevel;
|
|
j = bevel;
|
|
ptr_left = (PixelType *)_activeSurface->getBasePtr(x + w - bevel, y);
|
|
while (i--) {
|
|
colorFill(ptr_left + j, ptr_left + bevel, bottom_color);
|
|
if (j > 0) j--;
|
|
ptr_left += pitch;
|
|
}
|
|
}
|
|
|
|
/** GENERIC LINE ALGORITHM **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType,PixelFormat>::
|
|
drawLineAlg(int x1, int y1, int x2, int y2, int dx, int dy, PixelType color) {
|
|
PixelType *ptr = (PixelType *)_activeSurface->getBasePtr(x1, y1);
|
|
int pitch = Base::surfacePitch();
|
|
int xdir = (x2 > x1) ? 1 : -1;
|
|
|
|
*ptr = (PixelType)color;
|
|
|
|
if (dx > dy) {
|
|
int ddy = dy * 2;
|
|
int dysub = ddy - (dx * 2);
|
|
int error_term = ddy - dx;
|
|
|
|
while (dx--) {
|
|
if (error_term >= 0) {
|
|
ptr += pitch;
|
|
error_term += dysub;
|
|
} else {
|
|
error_term += ddy;
|
|
}
|
|
|
|
ptr += xdir;
|
|
*ptr = (PixelType)color;
|
|
}
|
|
} else {
|
|
int ddx = dx * 2;
|
|
int dxsub = ddx - (dy * 2);
|
|
int error_term = ddx - dy;
|
|
|
|
while (dy--) {
|
|
if (error_term >= 0) {
|
|
ptr += xdir;
|
|
error_term += dxsub;
|
|
} else {
|
|
error_term += ddx;
|
|
}
|
|
|
|
ptr += pitch;
|
|
*ptr = (PixelType)color;
|
|
}
|
|
}
|
|
|
|
ptr = (PixelType *)_activeSurface->getBasePtr(x2, y2);
|
|
*ptr = (PixelType)color;
|
|
}
|
|
|
|
/** VERTICAL TRIANGLE DRAWING ALGORITHM **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType,PixelFormat>::
|
|
drawTriangleVertAlg(int x1, int y1, int w, int h, bool inverted, PixelType color, VectorRenderer::FillMode fill_m) {
|
|
int dx = w >> 1, dy = h, gradient_h = 0;
|
|
int pitch = Base::surfacePitch();
|
|
PixelType *ptr_right = 0, *ptr_left = 0;
|
|
|
|
if (inverted) {
|
|
ptr_right = (PixelType *)_activeSurface->getBasePtr(x1, y1);
|
|
ptr_left = (PixelType *)_activeSurface->getBasePtr(x1 + w, y1);
|
|
} else {
|
|
ptr_right = ptr_left = (PixelType *)_activeSurface->getBasePtr(x1 + dx, y1);
|
|
}
|
|
|
|
if (dx > dy) {
|
|
int ddy = dy * 2;
|
|
int dysub = ddy - (dx * 2);
|
|
int error_term = ddy - dx;
|
|
|
|
switch(fill_m) {
|
|
case kFillDisabled:
|
|
while (dx--) {
|
|
__TRIANGLE_MAINX();
|
|
*ptr_right = color;
|
|
*ptr_left = color;
|
|
}
|
|
colorFill(ptr_left, ptr_right, color);
|
|
break;
|
|
|
|
case kFillForeground:
|
|
case kFillBackground:
|
|
while (dx--) {
|
|
__TRIANGLE_MAINX();
|
|
if (inverted) colorFill(ptr_right, ptr_left, color);
|
|
else colorFill(ptr_left, ptr_right, color);
|
|
}
|
|
break;
|
|
|
|
case kFillGradient:
|
|
while (dx--) {
|
|
__TRIANGLE_MAINX();
|
|
if (inverted) colorFill(ptr_right, ptr_left, calcGradient(gradient_h++, h));
|
|
else colorFill(ptr_left, ptr_right, calcGradient(gradient_h++, h));
|
|
}
|
|
break;
|
|
}
|
|
} else {
|
|
int ddx = dx * 2;
|
|
int dxsub = ddx - (dy * 2);
|
|
int error_term = ddx - dy;
|
|
|
|
switch(fill_m) {
|
|
case kFillDisabled:
|
|
while (dy--) {
|
|
__TRIANGLE_MAINY();
|
|
*ptr_right = color;
|
|
*ptr_left = color;
|
|
}
|
|
colorFill(ptr_left, ptr_right, color);
|
|
break;
|
|
|
|
case kFillForeground:
|
|
case kFillBackground:
|
|
while (dy--) {
|
|
__TRIANGLE_MAINY();
|
|
if (inverted) colorFill(ptr_right, ptr_left, color);
|
|
else colorFill(ptr_left, ptr_right, color);
|
|
}
|
|
break;
|
|
case kFillGradient:
|
|
while (dy--) {
|
|
__TRIANGLE_MAINY();
|
|
if (inverted) colorFill(ptr_right, ptr_left, calcGradient(gradient_h++, h));
|
|
else colorFill(ptr_left, ptr_right, calcGradient(gradient_h++, h));
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/** VERTICAL TRIANGLE DRAWING - FAST VERSION FOR SQUARED TRIANGLES */
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType,PixelFormat>::
|
|
drawTriangleFast(int x1, int y1, int size, bool inverted, PixelType color, VectorRenderer::FillMode fill_m) {
|
|
int pitch = Base::surfacePitch();
|
|
int hstep = 0, dy = size;
|
|
bool grad = (fill_m == kFillGradient);
|
|
|
|
PixelType *ptr_right = 0, *ptr_left = 0;
|
|
|
|
if (inverted) {
|
|
ptr_left = (PixelType *)_activeSurface->getBasePtr(x1, y1);
|
|
ptr_right = (PixelType *)_activeSurface->getBasePtr(x1 + size, y1);
|
|
} else {
|
|
ptr_left = (PixelType *)_activeSurface->getBasePtr(x1, y1 + size);
|
|
ptr_right = (PixelType *)_activeSurface->getBasePtr(x1 + size, y1 + size);
|
|
pitch = -pitch;
|
|
}
|
|
|
|
if (fill_m == kFillDisabled) {
|
|
while (ptr_left < ptr_right) {
|
|
*ptr_left = color;
|
|
*ptr_right = color;
|
|
ptr_left += pitch;
|
|
ptr_right += pitch;
|
|
if (hstep++ % 2) {
|
|
ptr_left++;
|
|
ptr_right--;
|
|
}
|
|
}
|
|
} else {
|
|
while (ptr_left < ptr_right) {
|
|
colorFill(ptr_left, ptr_right, grad ? calcGradient(dy--, size) : color);
|
|
ptr_left += pitch;
|
|
ptr_right += pitch;
|
|
if (hstep++ % 2) {
|
|
ptr_left++;
|
|
ptr_right--;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/** ROUNDED SQUARE ALGORITHM **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType, PixelFormat>::
|
|
drawRoundedSquareAlg(int x1, int y1, int r, int w, int h, PixelType color, VectorRenderer::FillMode fill_m) {
|
|
int f, ddF_x, ddF_y;
|
|
int x, y, px, py;
|
|
int pitch = Base::surfacePitch();
|
|
int sw = 0, sp = 0, hp = h * pitch;
|
|
|
|
PixelType *ptr_tl = (PixelType *)Base::_activeSurface->getBasePtr(x1 + r, y1 + r);
|
|
PixelType *ptr_tr = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w - r, y1 + r);
|
|
PixelType *ptr_bl = (PixelType *)Base::_activeSurface->getBasePtr(x1 + r, y1 + h - r);
|
|
PixelType *ptr_br = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w - r, y1 + h - r);
|
|
PixelType *ptr_fill = (PixelType *)Base::_activeSurface->getBasePtr(x1, y1);
|
|
|
|
int real_radius = r;
|
|
int short_h = h - (2 * r) + 2;
|
|
int long_h = h;
|
|
|
|
if (fill_m == kFillDisabled) {
|
|
while (sw++ < Base::_strokeWidth) {
|
|
colorFill(ptr_fill + sp + r, ptr_fill + w + 1 + sp - r, color);
|
|
colorFill(ptr_fill + hp - sp + r, ptr_fill + w + hp + 1 - sp - r, color);
|
|
sp += pitch;
|
|
|
|
__BE_RESET();
|
|
r--;
|
|
|
|
while (x++ < y) {
|
|
__BE_ALGORITHM();
|
|
__BE_DRAWCIRCLE(ptr_tr, ptr_tl, ptr_bl, ptr_br, x, y, px, py);
|
|
|
|
if (Base::_strokeWidth > 1) {
|
|
__BE_DRAWCIRCLE(ptr_tr, ptr_tl, ptr_bl, ptr_br, x - 1, y, px, py);
|
|
__BE_DRAWCIRCLE(ptr_tr, ptr_tl, ptr_bl, ptr_br, x, y, px - pitch, py);
|
|
}
|
|
}
|
|
}
|
|
|
|
ptr_fill += pitch * real_radius;
|
|
while (short_h--) {
|
|
colorFill(ptr_fill, ptr_fill + Base::_strokeWidth, color);
|
|
colorFill(ptr_fill + w - Base::_strokeWidth + 1, ptr_fill + w + 1, color);
|
|
ptr_fill += pitch;
|
|
}
|
|
} else {
|
|
__BE_RESET();
|
|
PixelType color1, color2, color3, color4;
|
|
|
|
if (fill_m == kFillGradient) {
|
|
while (x++ < y) {
|
|
__BE_ALGORITHM();
|
|
|
|
color1 = calcGradient(real_radius - x, long_h);
|
|
color2 = calcGradient(real_radius - y, long_h);
|
|
color3 = calcGradient(long_h - r + x, long_h);
|
|
color4 = calcGradient(long_h - r + y, long_h);
|
|
|
|
colorFill(ptr_tl - x - py, ptr_tr + x - py, color2);
|
|
colorFill(ptr_tl - y - px, ptr_tr + y - px, color1);
|
|
|
|
colorFill(ptr_bl - x + py, ptr_br + x + py, color4);
|
|
colorFill(ptr_bl - y + px, ptr_br + y + px, color3);
|
|
|
|
__BE_DRAWCIRCLE_XCOLOR(ptr_tr, ptr_tl, ptr_bl, ptr_br, x, y, px, py);
|
|
}
|
|
} else {
|
|
while (x++ < y) {
|
|
__BE_ALGORITHM();
|
|
|
|
colorFill(ptr_tl - x - py, ptr_tr + x - py, color);
|
|
colorFill(ptr_tl - y - px, ptr_tr + y - px, color);
|
|
|
|
colorFill(ptr_bl - x + py, ptr_br + x + py, color);
|
|
colorFill(ptr_bl - y + px, ptr_br + y + px, color);
|
|
|
|
// do not remove - messes up the drawing at lower resolutions
|
|
__BE_DRAWCIRCLE(ptr_tr, ptr_tl, ptr_bl, ptr_br, x, y, px, py);
|
|
}
|
|
}
|
|
|
|
ptr_fill += pitch * r;
|
|
while (short_h--) {
|
|
if (fill_m == kFillGradient)
|
|
color = calcGradient(real_radius++, long_h);
|
|
colorFill(ptr_fill, ptr_fill + w + 1, color);
|
|
ptr_fill += pitch;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** CIRCLE ALGORITHM **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType, PixelFormat>::
|
|
drawCircleAlg(int x1, int y1, int r, PixelType color, VectorRenderer::FillMode fill_m) {
|
|
int f, ddF_x, ddF_y;
|
|
int x, y, px, py, sw = 0;
|
|
int pitch = Base::surfacePitch();
|
|
PixelType *ptr = (PixelType *)Base::_activeSurface->getBasePtr(x1, y1);
|
|
|
|
if (fill_m == kFillDisabled) {
|
|
while (sw++ < Base::_strokeWidth) {
|
|
__BE_RESET();
|
|
r--;
|
|
|
|
*(ptr + y) = color;
|
|
*(ptr - y) = color;
|
|
*(ptr + py) = color;
|
|
*(ptr - py) = color;
|
|
|
|
while (x++ < y) {
|
|
__BE_ALGORITHM();
|
|
__BE_DRAWCIRCLE(ptr, ptr, ptr, ptr, x, y, px, py);
|
|
|
|
if (Base::_strokeWidth > 1) {
|
|
__BE_DRAWCIRCLE(ptr, ptr, ptr, ptr, x - 1, y, px, py);
|
|
__BE_DRAWCIRCLE(ptr, ptr, ptr, ptr, x, y, px - pitch, py);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
colorFill(ptr - r, ptr + r, color);
|
|
__BE_RESET();
|
|
|
|
while (x++ < y) {
|
|
__BE_ALGORITHM();
|
|
colorFill(ptr - x + py, ptr + x + py, color);
|
|
colorFill(ptr - x - py, ptr + x - py, color);
|
|
colorFill(ptr - y + px, ptr + y + px, color);
|
|
colorFill(ptr - y - px, ptr + y - px, color);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/********************************************************************
|
|
* SHADOW drawing algorithms - VectorRendererSpec
|
|
********************************************************************/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType, PixelFormat>::
|
|
drawSquareShadow(int x, int y, int w, int h, int blur) {
|
|
PixelType *ptr = (PixelType *)_activeSurface->getBasePtr(x + w - 1, y + blur);
|
|
int pitch = Base::surfacePitch();
|
|
int i, j;
|
|
|
|
i = h - blur;
|
|
|
|
while (i--) {
|
|
j = blur;
|
|
while (j--)
|
|
blendPixelPtr(ptr + j, 0, ((blur - j) << 8) / blur);
|
|
ptr += pitch;
|
|
}
|
|
|
|
ptr = (PixelType *)_activeSurface->getBasePtr(x + blur, y + h - 1);
|
|
|
|
while (i++ < blur) {
|
|
j = w - blur;
|
|
while (j--)
|
|
blendPixelPtr(ptr + j, 0, ((blur - i) << 8) / blur);
|
|
ptr += pitch;
|
|
}
|
|
|
|
ptr = (PixelType *)_activeSurface->getBasePtr(x + w, y + h);
|
|
|
|
i = 0;
|
|
while (i++ < blur) {
|
|
j = blur - 1;
|
|
while (j--)
|
|
blendPixelPtr(ptr + j, 0, (((blur - j) * (blur - i)) << 8) / (blur * blur));
|
|
ptr += pitch;
|
|
}
|
|
}
|
|
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererSpec<PixelType, PixelFormat>::
|
|
drawRoundedSquareShadow(int x1, int y1, int r, int w, int h, int blur) {
|
|
int f, ddF_x, ddF_y;
|
|
int x, y, px, py;
|
|
int pitch = Base::surfacePitch();
|
|
int alpha = 102;
|
|
|
|
x1 += blur;
|
|
y1 += blur;
|
|
|
|
PixelType *ptr_tr = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w - r, y1 + r);
|
|
PixelType *ptr_bl = (PixelType *)Base::_activeSurface->getBasePtr(x1 + r, y1 + h - r);
|
|
PixelType *ptr_br = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w - r, y1 + h - r);
|
|
PixelType *ptr_fill = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w - blur, y1 + r);
|
|
|
|
int short_h = h - (2 * r) + 1;
|
|
|
|
__BE_RESET();
|
|
|
|
// HACK: As we are drawing circles exploting 8-axis symmetry,
|
|
// there are 4 pixels on each circle which are drawn twice.
|
|
// this is ok on filled circles, but when blending on surfaces,
|
|
// we cannot let it blend twice. awful.
|
|
bool *hb = new bool[r];
|
|
|
|
int i = 0;
|
|
while (i < r)
|
|
hb[i++] = false;
|
|
|
|
while (x++ < y) {
|
|
__BE_ALGORITHM();
|
|
|
|
if (!hb[x]) {
|
|
blendFill(ptr_tr - px - r, ptr_tr + y - px, 0, alpha);
|
|
blendFill(ptr_bl - y + px, ptr_br + y + px, 0, alpha);
|
|
hb[x] = true;
|
|
}
|
|
|
|
if (!hb[y]) {
|
|
blendFill(ptr_tr - r - py, ptr_tr + x - py, 0, alpha);
|
|
blendFill(ptr_bl - x + py, ptr_br + x + py, 0, alpha);
|
|
hb[y] = true;
|
|
}
|
|
}
|
|
|
|
delete[] hb;
|
|
|
|
while (short_h--) {
|
|
blendFill(ptr_fill - r, ptr_fill + blur, 0, alpha);
|
|
ptr_fill += pitch;
|
|
}
|
|
}
|
|
|
|
|
|
/********************************************************************
|
|
* ANTIALIASED PRIMITIVES drawing algorithms - VectorRendererAA
|
|
********************************************************************/
|
|
/** LINES **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererAA<PixelType, PixelFormat>::
|
|
drawLineAlg(int x1, int y1, int x2, int y2, int dx, int dy, PixelType color) {
|
|
|
|
PixelType *ptr = (PixelType *)Base::_activeSurface->getBasePtr(x1, y1);
|
|
int pitch = Base::surfacePitch();
|
|
int xdir = (x2 > x1) ? 1 : -1;
|
|
uint16 error_tmp, error_acc, gradient;
|
|
uint8 alpha;
|
|
|
|
*ptr = (PixelType)color;
|
|
|
|
if (dx > dy) {
|
|
gradient = (uint32)(dy << 16) / (uint32)dx;
|
|
error_acc = 0;
|
|
|
|
while (--dx) {
|
|
error_tmp = error_acc;
|
|
error_acc += gradient;
|
|
|
|
if (error_acc <= error_tmp)
|
|
ptr += pitch;
|
|
|
|
ptr += xdir;
|
|
alpha = (error_acc >> 8);
|
|
|
|
blendPixelPtr(ptr, color, ~alpha);
|
|
blendPixelPtr(ptr + pitch, color, alpha);
|
|
}
|
|
} else {
|
|
gradient = (uint32)(dx << 16) / (uint32)dy;
|
|
error_acc = 0;
|
|
|
|
while (--dy) {
|
|
error_tmp = error_acc;
|
|
error_acc += gradient;
|
|
|
|
if (error_acc <= error_tmp)
|
|
ptr += xdir;
|
|
|
|
ptr += pitch;
|
|
alpha = (error_acc >> 8);
|
|
|
|
blendPixelPtr(ptr, color, ~alpha);
|
|
blendPixelPtr(ptr + xdir, color, alpha);
|
|
}
|
|
}
|
|
|
|
Base::putPixel(x2, y2, color);
|
|
}
|
|
|
|
/** ROUNDED SQUARES **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererAA<PixelType, PixelFormat>::
|
|
drawRoundedSquareAlg(int x1, int y1, int r, int w, int h, PixelType color, VectorRenderer::FillMode fill_m) {
|
|
int x, y;
|
|
int p = Base::surfacePitch(), px, py;
|
|
int sw = 0, sp = 0, hp = h * p;
|
|
|
|
uint32 rsq = (r * r) << 16;
|
|
uint32 T = 0, oldT;
|
|
uint8 a1, a2;
|
|
|
|
PixelType *ptr_tl = (PixelType *)Base::_activeSurface->getBasePtr(x1 + r, y1 + r);
|
|
PixelType *ptr_tr = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w - r, y1 + r);
|
|
PixelType *ptr_bl = (PixelType *)Base::_activeSurface->getBasePtr(x1 + r, y1 + h - r);
|
|
PixelType *ptr_br = (PixelType *)Base::_activeSurface->getBasePtr(x1 + w - r, y1 + h - r);
|
|
PixelType *ptr_fill = (PixelType *)Base::_activeSurface->getBasePtr(x1, y1);
|
|
|
|
int short_h = h - 2 * r;
|
|
|
|
if (fill_m == VectorRenderer::kFillDisabled) {
|
|
while (sw++ < Base::_strokeWidth) {
|
|
colorFill(ptr_fill + sp + r, ptr_fill + w + 1 + sp - r, color);
|
|
colorFill(ptr_fill + hp - sp + r, ptr_fill + w + hp + 1 - sp - r, color);
|
|
sp += p;
|
|
|
|
x = r - (sw - 1); y = 0; T = 0;
|
|
px = p * x; py = 0;
|
|
|
|
while (x > y++) {
|
|
__WU_ALGORITHM();
|
|
|
|
if (sw != 1 && sw != Base::_strokeWidth)
|
|
a2 = a1 = 255;
|
|
|
|
__WU_DRAWCIRCLE(ptr_tr, ptr_tl, ptr_bl, ptr_br, (x - 1), y, (px - p), py, a2);
|
|
__WU_DRAWCIRCLE(ptr_tr, ptr_tl, ptr_bl, ptr_br, x, y, px, py, a1);
|
|
}
|
|
}
|
|
|
|
ptr_fill += p * r;
|
|
while (short_h-- >= 0) {
|
|
colorFill(ptr_fill, ptr_fill + Base::_strokeWidth, color);
|
|
colorFill(ptr_fill + w - Base::_strokeWidth + 1, ptr_fill + w + 1, color);
|
|
ptr_fill += p;
|
|
}
|
|
} else {
|
|
x = r; y = 0; T = 0;
|
|
px = p * x; py = 0;
|
|
|
|
while (x > y++) {
|
|
__WU_ALGORITHM();
|
|
|
|
colorFill(ptr_tl - x - py, ptr_tr + x - py, color);
|
|
colorFill(ptr_tl - y - px, ptr_tr + y - px, color);
|
|
|
|
colorFill(ptr_bl - x + py, ptr_br + x + py, color);
|
|
colorFill(ptr_bl - y + px, ptr_br + y + px, color);
|
|
|
|
__WU_DRAWCIRCLE(ptr_tr, ptr_tl, ptr_bl, ptr_br, x, y, px, py, a1);
|
|
}
|
|
|
|
ptr_fill += p * r;
|
|
while (short_h-- >= 0) {
|
|
colorFill(ptr_fill, ptr_fill + w + 1, color);
|
|
ptr_fill += p;
|
|
}
|
|
}
|
|
}
|
|
|
|
/** CIRCLES **/
|
|
template<typename PixelType, typename PixelFormat>
|
|
void VectorRendererAA<PixelType, PixelFormat>::
|
|
drawCircleAlg(int x1, int y1, int r, PixelType color, VectorRenderer::FillMode fill_m) {
|
|
int x, y, sw = 0;
|
|
int p = Base::surfacePitch(), px, py;
|
|
|
|
uint32 rsq = (r * r) << 16;
|
|
uint32 T = 0, oldT;
|
|
uint8 a1, a2;
|
|
|
|
PixelType *ptr = (PixelType *)Base::_activeSurface->getBasePtr(x1, y1);
|
|
|
|
if (fill_m == VectorRenderer::kFillDisabled) {
|
|
while (sw++ < Base::_strokeWidth) {
|
|
x = r - (sw - 1); y = 0; T = 0;
|
|
px = p * x; py = 0;
|
|
|
|
*(ptr + x) = (PixelType)color;
|
|
*(ptr - x) = (PixelType)color;
|
|
*(ptr + px) = (PixelType)color;
|
|
*(ptr - px) = (PixelType)color;
|
|
|
|
while (x > y++) {
|
|
__WU_ALGORITHM();
|
|
|
|
if (sw != 1 && sw != Base::_strokeWidth)
|
|
a2 = a1 = 255;
|
|
|
|
__WU_DRAWCIRCLE(ptr, ptr, ptr, ptr, (x - 1), y, (px - p), py, a2);
|
|
__WU_DRAWCIRCLE(ptr, ptr, ptr, ptr, x, y, px, py, a1);
|
|
}
|
|
}
|
|
} else {
|
|
colorFill(ptr - r, ptr + r + 1, color);
|
|
x = r; y = 0; T = 0;
|
|
px = p * x; py = 0;
|
|
|
|
while (x > y++) {
|
|
__WU_ALGORITHM();
|
|
|
|
colorFill(ptr - x + py, ptr + x + py, color);
|
|
colorFill(ptr - x - py, ptr + x - py, color);
|
|
colorFill(ptr - y + px, ptr + y + px, color);
|
|
colorFill(ptr - y - px, ptr + y - px, color);
|
|
|
|
__WU_DRAWCIRCLE(ptr, ptr, ptr, ptr, x, y, px, py, a1);
|
|
}
|
|
}
|
|
}
|
|
|
|
} // end of namespace Graphics
|