gecko-dev/gfx/thebes/gfxMatrix.cpp
Zack Weinberg 95de3783f6 Bug 571989 part 3: Flatten directory structure below gfx/thebes.
--HG--
rename : gfx/thebes/src/GLContext.cpp => gfx/thebes/GLContext.cpp
rename : gfx/thebes/public/GLContext.h => gfx/thebes/GLContext.h
rename : gfx/thebes/public/GLContextProvider.h => gfx/thebes/GLContextProvider.h
rename : gfx/thebes/src/GLContextProviderCGL.mm => gfx/thebes/GLContextProviderCGL.mm
rename : gfx/thebes/src/GLContextProviderEGL.cpp => gfx/thebes/GLContextProviderEGL.cpp
rename : gfx/thebes/src/GLContextProviderGLX.cpp => gfx/thebes/GLContextProviderGLX.cpp
rename : gfx/thebes/src/GLContextProviderNull.cpp => gfx/thebes/GLContextProviderNull.cpp
rename : gfx/thebes/src/GLContextProviderOSMesa.cpp => gfx/thebes/GLContextProviderOSMesa.cpp
rename : gfx/thebes/src/GLContextProviderWGL.cpp => gfx/thebes/GLContextProviderWGL.cpp
rename : gfx/thebes/public/GLDefs.h => gfx/thebes/GLDefs.h
rename : gfx/thebes/public/GLXLibrary.h => gfx/thebes/GLXLibrary.h
rename : gfx/thebes/public/WGLLibrary.h => gfx/thebes/WGLLibrary.h
rename : gfx/thebes/src/cairo-gdk-utils.c => gfx/thebes/cairo-gdk-utils.c
rename : gfx/thebes/src/cairo-gdk-utils.h => gfx/thebes/cairo-gdk-utils.h
rename : gfx/thebes/src/cairo-xlib-utils.c => gfx/thebes/cairo-xlib-utils.c
rename : gfx/thebes/src/cairo-xlib-utils.h => gfx/thebes/cairo-xlib-utils.h
rename : gfx/thebes/src/genUnicodeScriptData.pl => gfx/thebes/genUnicodeScriptData.pl
rename : gfx/thebes/public/gfx3DMatrix.h => gfx/thebes/gfx3DMatrix.h
rename : gfx/thebes/src/gfxASurface.cpp => gfx/thebes/gfxASurface.cpp
rename : gfx/thebes/public/gfxASurface.h => gfx/thebes/gfxASurface.h
rename : gfx/thebes/src/gfxAlphaRecovery.cpp => gfx/thebes/gfxAlphaRecovery.cpp
rename : gfx/thebes/public/gfxAlphaRecovery.h => gfx/thebes/gfxAlphaRecovery.h
rename : gfx/thebes/src/gfxAndroidPlatform.cpp => gfx/thebes/gfxAndroidPlatform.cpp
rename : gfx/thebes/public/gfxAndroidPlatform.h => gfx/thebes/gfxAndroidPlatform.h
rename : gfx/thebes/src/gfxAtomList.h => gfx/thebes/gfxAtomList.h
rename : gfx/thebes/src/gfxAtoms.cpp => gfx/thebes/gfxAtoms.cpp
rename : gfx/thebes/src/gfxAtoms.h => gfx/thebes/gfxAtoms.h
rename : gfx/thebes/src/gfxBeOSPlatform.cpp => gfx/thebes/gfxBeOSPlatform.cpp
rename : gfx/thebes/public/gfxBeOSPlatform.h => gfx/thebes/gfxBeOSPlatform.h
rename : gfx/thebes/src/gfxBeOSSurface.cpp => gfx/thebes/gfxBeOSSurface.cpp
rename : gfx/thebes/public/gfxBeOSSurface.h => gfx/thebes/gfxBeOSSurface.h
rename : gfx/thebes/public/gfxColor.h => gfx/thebes/gfxColor.h
rename : gfx/thebes/src/gfxContext.cpp => gfx/thebes/gfxContext.cpp
rename : gfx/thebes/public/gfxContext.h => gfx/thebes/gfxContext.h
rename : gfx/thebes/src/gfxCoreTextShaper.cpp => gfx/thebes/gfxCoreTextShaper.cpp
rename : gfx/thebes/src/gfxCoreTextShaper.h => gfx/thebes/gfxCoreTextShaper.h
rename : gfx/thebes/src/gfxD2DSurface.cpp => gfx/thebes/gfxD2DSurface.cpp
rename : gfx/thebes/public/gfxD2DSurface.h => gfx/thebes/gfxD2DSurface.h
rename : gfx/thebes/src/gfxDDrawSurface.cpp => gfx/thebes/gfxDDrawSurface.cpp
rename : gfx/thebes/public/gfxDDrawSurface.h => gfx/thebes/gfxDDrawSurface.h
rename : gfx/thebes/src/gfxDWriteCommon.cpp => gfx/thebes/gfxDWriteCommon.cpp
rename : gfx/thebes/src/gfxDWriteCommon.h => gfx/thebes/gfxDWriteCommon.h
rename : gfx/thebes/src/gfxDWriteFontList.cpp => gfx/thebes/gfxDWriteFontList.cpp
rename : gfx/thebes/src/gfxDWriteFontList.h => gfx/thebes/gfxDWriteFontList.h
rename : gfx/thebes/src/gfxDWriteFonts.cpp => gfx/thebes/gfxDWriteFonts.cpp
rename : gfx/thebes/public/gfxDWriteFonts.h => gfx/thebes/gfxDWriteFonts.h
rename : gfx/thebes/src/gfxDWriteShaper.cpp => gfx/thebes/gfxDWriteShaper.cpp
rename : gfx/thebes/src/gfxDWriteShaper.h => gfx/thebes/gfxDWriteShaper.h
rename : gfx/thebes/src/gfxDWriteTextAnalysis.cpp => gfx/thebes/gfxDWriteTextAnalysis.cpp
rename : gfx/thebes/src/gfxDWriteTextAnalysis.h => gfx/thebes/gfxDWriteTextAnalysis.h
rename : gfx/thebes/src/gfxDirectFBSurface.cpp => gfx/thebes/gfxDirectFBSurface.cpp
rename : gfx/thebes/public/gfxDirectFBSurface.h => gfx/thebes/gfxDirectFBSurface.h
rename : gfx/thebes/src/gfxDllDeps.cpp => gfx/thebes/gfxDllDeps.cpp
rename : gfx/thebes/src/gfxFT2FontBase.cpp => gfx/thebes/gfxFT2FontBase.cpp
rename : gfx/thebes/public/gfxFT2FontBase.h => gfx/thebes/gfxFT2FontBase.h
rename : gfx/thebes/src/gfxFT2FontList.cpp => gfx/thebes/gfxFT2FontList.cpp
rename : gfx/thebes/src/gfxFT2FontList.h => gfx/thebes/gfxFT2FontList.h
rename : gfx/thebes/src/gfxFT2Fonts.cpp => gfx/thebes/gfxFT2Fonts.cpp
rename : gfx/thebes/public/gfxFT2Fonts.h => gfx/thebes/gfxFT2Fonts.h
rename : gfx/thebes/src/gfxFT2Utils.cpp => gfx/thebes/gfxFT2Utils.cpp
rename : gfx/thebes/src/gfxFT2Utils.h => gfx/thebes/gfxFT2Utils.h
rename : gfx/thebes/src/gfxFont.cpp => gfx/thebes/gfxFont.cpp
rename : gfx/thebes/public/gfxFont.h => gfx/thebes/gfxFont.h
rename : gfx/thebes/public/gfxFontConstants.h => gfx/thebes/gfxFontConstants.h
rename : gfx/thebes/src/gfxFontMissingGlyphs.cpp => gfx/thebes/gfxFontMissingGlyphs.cpp
rename : gfx/thebes/src/gfxFontMissingGlyphs.h => gfx/thebes/gfxFontMissingGlyphs.h
rename : gfx/thebes/src/gfxFontTest.cpp => gfx/thebes/gfxFontTest.cpp
rename : gfx/thebes/public/gfxFontTest.h => gfx/thebes/gfxFontTest.h
rename : gfx/thebes/src/gfxFontUtils.cpp => gfx/thebes/gfxFontUtils.cpp
rename : gfx/thebes/public/gfxFontUtils.h => gfx/thebes/gfxFontUtils.h
rename : gfx/thebes/src/gfxFontconfigUtils.cpp => gfx/thebes/gfxFontconfigUtils.cpp
rename : gfx/thebes/src/gfxFontconfigUtils.h => gfx/thebes/gfxFontconfigUtils.h
rename : gfx/thebes/src/gfxGDIFont.cpp => gfx/thebes/gfxGDIFont.cpp
rename : gfx/thebes/src/gfxGDIFont.h => gfx/thebes/gfxGDIFont.h
rename : gfx/thebes/src/gfxGDIFontList.cpp => gfx/thebes/gfxGDIFontList.cpp
rename : gfx/thebes/src/gfxGDIFontList.h => gfx/thebes/gfxGDIFontList.h
rename : gfx/thebes/src/gfxGDIShaper.cpp => gfx/thebes/gfxGDIShaper.cpp
rename : gfx/thebes/src/gfxGDIShaper.h => gfx/thebes/gfxGDIShaper.h
rename : gfx/thebes/src/gfxGdkNativeRenderer.cpp => gfx/thebes/gfxGdkNativeRenderer.cpp
rename : gfx/thebes/public/gfxGdkNativeRenderer.h => gfx/thebes/gfxGdkNativeRenderer.h
rename : gfx/thebes/public/gfxGlitzSurface.h => gfx/thebes/gfxGlitzSurface.h
rename : gfx/thebes/src/gfxHarfBuzzShaper.cpp => gfx/thebes/gfxHarfBuzzShaper.cpp
rename : gfx/thebes/src/gfxHarfBuzzShaper.h => gfx/thebes/gfxHarfBuzzShaper.h
rename : gfx/thebes/src/gfxImageSurface.cpp => gfx/thebes/gfxImageSurface.cpp
rename : gfx/thebes/public/gfxImageSurface.h => gfx/thebes/gfxImageSurface.h
rename : gfx/thebes/src/gfxMacFont.cpp => gfx/thebes/gfxMacFont.cpp
rename : gfx/thebes/src/gfxMacFont.h => gfx/thebes/gfxMacFont.h
rename : gfx/thebes/src/gfxMacPlatformFontList.h => gfx/thebes/gfxMacPlatformFontList.h
rename : gfx/thebes/src/gfxMacPlatformFontList.mm => gfx/thebes/gfxMacPlatformFontList.mm
rename : gfx/thebes/src/gfxMatrix.cpp => gfx/thebes/gfxMatrix.cpp
rename : gfx/thebes/public/gfxMatrix.h => gfx/thebes/gfxMatrix.h
rename : gfx/thebes/src/gfxOS2Fonts.cpp => gfx/thebes/gfxOS2Fonts.cpp
rename : gfx/thebes/public/gfxOS2Fonts.h => gfx/thebes/gfxOS2Fonts.h
rename : gfx/thebes/src/gfxOS2Platform.cpp => gfx/thebes/gfxOS2Platform.cpp
rename : gfx/thebes/public/gfxOS2Platform.h => gfx/thebes/gfxOS2Platform.h
rename : gfx/thebes/src/gfxOS2Surface.cpp => gfx/thebes/gfxOS2Surface.cpp
rename : gfx/thebes/public/gfxOS2Surface.h => gfx/thebes/gfxOS2Surface.h
rename : gfx/thebes/src/gfxPDFSurface.cpp => gfx/thebes/gfxPDFSurface.cpp
rename : gfx/thebes/public/gfxPDFSurface.h => gfx/thebes/gfxPDFSurface.h
rename : gfx/thebes/src/gfxPSSurface.cpp => gfx/thebes/gfxPSSurface.cpp
rename : gfx/thebes/public/gfxPSSurface.h => gfx/thebes/gfxPSSurface.h
rename : gfx/thebes/src/gfxPangoFonts.cpp => gfx/thebes/gfxPangoFonts.cpp
rename : gfx/thebes/public/gfxPangoFonts.h => gfx/thebes/gfxPangoFonts.h
rename : gfx/thebes/src/gfxPath.cpp => gfx/thebes/gfxPath.cpp
rename : gfx/thebes/public/gfxPath.h => gfx/thebes/gfxPath.h
rename : gfx/thebes/src/gfxPattern.cpp => gfx/thebes/gfxPattern.cpp
rename : gfx/thebes/public/gfxPattern.h => gfx/thebes/gfxPattern.h
rename : gfx/thebes/src/gfxPlatform.cpp => gfx/thebes/gfxPlatform.cpp
rename : gfx/thebes/public/gfxPlatform.h => gfx/thebes/gfxPlatform.h
rename : gfx/thebes/src/gfxPlatformFontList.cpp => gfx/thebes/gfxPlatformFontList.cpp
rename : gfx/thebes/src/gfxPlatformFontList.h => gfx/thebes/gfxPlatformFontList.h
rename : gfx/thebes/src/gfxPlatformGtk.cpp => gfx/thebes/gfxPlatformGtk.cpp
rename : gfx/thebes/public/gfxPlatformGtk.h => gfx/thebes/gfxPlatformGtk.h
rename : gfx/thebes/src/gfxPlatformMac.cpp => gfx/thebes/gfxPlatformMac.cpp
rename : gfx/thebes/public/gfxPlatformMac.h => gfx/thebes/gfxPlatformMac.h
rename : gfx/thebes/public/gfxPoint.h => gfx/thebes/gfxPoint.h
rename : gfx/thebes/src/gfxQPainterSurface.cpp => gfx/thebes/gfxQPainterSurface.cpp
rename : gfx/thebes/public/gfxQPainterSurface.h => gfx/thebes/gfxQPainterSurface.h
rename : gfx/thebes/src/gfxQtNativeRenderer.cpp => gfx/thebes/gfxQtNativeRenderer.cpp
rename : gfx/thebes/public/gfxQtNativeRenderer.h => gfx/thebes/gfxQtNativeRenderer.h
rename : gfx/thebes/src/gfxQtPlatform.cpp => gfx/thebes/gfxQtPlatform.cpp
rename : gfx/thebes/public/gfxQtPlatform.h => gfx/thebes/gfxQtPlatform.h
rename : gfx/thebes/src/gfxQuartzImageSurface.cpp => gfx/thebes/gfxQuartzImageSurface.cpp
rename : gfx/thebes/public/gfxQuartzImageSurface.h => gfx/thebes/gfxQuartzImageSurface.h
rename : gfx/thebes/src/gfxQuartzNativeDrawing.cpp => gfx/thebes/gfxQuartzNativeDrawing.cpp
rename : gfx/thebes/public/gfxQuartzNativeDrawing.h => gfx/thebes/gfxQuartzNativeDrawing.h
rename : gfx/thebes/src/gfxQuartzPDFSurface.cpp => gfx/thebes/gfxQuartzPDFSurface.cpp
rename : gfx/thebes/public/gfxQuartzPDFSurface.h => gfx/thebes/gfxQuartzPDFSurface.h
rename : gfx/thebes/src/gfxQuartzSurface.cpp => gfx/thebes/gfxQuartzSurface.cpp
rename : gfx/thebes/public/gfxQuartzSurface.h => gfx/thebes/gfxQuartzSurface.h
rename : gfx/thebes/src/gfxRect.cpp => gfx/thebes/gfxRect.cpp
rename : gfx/thebes/public/gfxRect.h => gfx/thebes/gfxRect.h
rename : gfx/thebes/src/gfxScriptItemizer.cpp => gfx/thebes/gfxScriptItemizer.cpp
rename : gfx/thebes/src/gfxScriptItemizer.h => gfx/thebes/gfxScriptItemizer.h
rename : gfx/thebes/src/gfxSharedImageSurface.cpp => gfx/thebes/gfxSharedImageSurface.cpp
rename : gfx/thebes/public/gfxSharedImageSurface.h => gfx/thebes/gfxSharedImageSurface.h
rename : gfx/thebes/src/gfxSkipChars.cpp => gfx/thebes/gfxSkipChars.cpp
rename : gfx/thebes/public/gfxSkipChars.h => gfx/thebes/gfxSkipChars.h
rename : gfx/thebes/src/gfxTextRunCache.cpp => gfx/thebes/gfxTextRunCache.cpp
rename : gfx/thebes/public/gfxTextRunCache.h => gfx/thebes/gfxTextRunCache.h
rename : gfx/thebes/src/gfxTextRunWordCache.cpp => gfx/thebes/gfxTextRunWordCache.cpp
rename : gfx/thebes/public/gfxTextRunWordCache.h => gfx/thebes/gfxTextRunWordCache.h
rename : gfx/thebes/public/gfxTypes.h => gfx/thebes/gfxTypes.h
rename : gfx/thebes/src/gfxUnicodeProperties.cpp => gfx/thebes/gfxUnicodeProperties.cpp
rename : gfx/thebes/src/gfxUnicodeProperties.h => gfx/thebes/gfxUnicodeProperties.h
rename : gfx/thebes/src/gfxUnicodePropertyData.cpp => gfx/thebes/gfxUnicodePropertyData.cpp
rename : gfx/thebes/src/gfxUniscribeShaper.cpp => gfx/thebes/gfxUniscribeShaper.cpp
rename : gfx/thebes/src/gfxUniscribeShaper.h => gfx/thebes/gfxUniscribeShaper.h
rename : gfx/thebes/src/gfxUserFontSet.cpp => gfx/thebes/gfxUserFontSet.cpp
rename : gfx/thebes/public/gfxUserFontSet.h => gfx/thebes/gfxUserFontSet.h
rename : gfx/thebes/src/gfxUtils.cpp => gfx/thebes/gfxUtils.cpp
rename : gfx/thebes/public/gfxUtils.h => gfx/thebes/gfxUtils.h
rename : gfx/thebes/src/gfxWindowsNativeDrawing.cpp => gfx/thebes/gfxWindowsNativeDrawing.cpp
rename : gfx/thebes/public/gfxWindowsNativeDrawing.h => gfx/thebes/gfxWindowsNativeDrawing.h
rename : gfx/thebes/src/gfxWindowsPlatform.cpp => gfx/thebes/gfxWindowsPlatform.cpp
rename : gfx/thebes/public/gfxWindowsPlatform.h => gfx/thebes/gfxWindowsPlatform.h
rename : gfx/thebes/src/gfxWindowsSurface.cpp => gfx/thebes/gfxWindowsSurface.cpp
rename : gfx/thebes/public/gfxWindowsSurface.h => gfx/thebes/gfxWindowsSurface.h
rename : gfx/thebes/src/gfxXlibNativeRenderer.cpp => gfx/thebes/gfxXlibNativeRenderer.cpp
rename : gfx/thebes/public/gfxXlibNativeRenderer.h => gfx/thebes/gfxXlibNativeRenderer.h
rename : gfx/thebes/src/gfxXlibSurface.cpp => gfx/thebes/gfxXlibSurface.cpp
rename : gfx/thebes/public/gfxXlibSurface.h => gfx/thebes/gfxXlibSurface.h
rename : gfx/thebes/src/ignorable.x-ccmap => gfx/thebes/ignorable.x-ccmap
rename : gfx/thebes/src/nsUnicodeRange.cpp => gfx/thebes/nsUnicodeRange.cpp
rename : gfx/thebes/src/nsUnicodeRange.h => gfx/thebes/nsUnicodeRange.h
rename : gfx/thebes/src/woff-private.h => gfx/thebes/woff-private.h
rename : gfx/thebes/src/woff.c => gfx/thebes/woff.c
rename : gfx/thebes/src/woff.h => gfx/thebes/woff.h
2010-06-28 10:37:23 -07:00

196 lines
5.8 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Oracle Corporation code.
*
* The Initial Developer of the Original Code is Oracle Corporation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@pavlov.net>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "gfxMatrix.h"
#include "gfx3DMatrix.h"
#include "cairo.h"
#define CAIRO_MATRIX(x) reinterpret_cast<cairo_matrix_t*>((x))
#define CONST_CAIRO_MATRIX(x) reinterpret_cast<const cairo_matrix_t*>((x))
const gfxMatrix&
gfxMatrix::Reset()
{
cairo_matrix_init_identity(CAIRO_MATRIX(this));
return *this;
}
const gfxMatrix&
gfxMatrix::Invert()
{
cairo_matrix_invert(CAIRO_MATRIX(this));
return *this;
}
const gfxMatrix&
gfxMatrix::Scale(gfxFloat x, gfxFloat y)
{
cairo_matrix_scale(CAIRO_MATRIX(this), x, y);
return *this;
}
const gfxMatrix&
gfxMatrix::Translate(const gfxPoint& pt)
{
cairo_matrix_translate(CAIRO_MATRIX(this), pt.x, pt.y);
return *this;
}
const gfxMatrix&
gfxMatrix::Rotate(gfxFloat radians)
{
cairo_matrix_rotate(CAIRO_MATRIX(this), radians);
return *this;
}
const gfxMatrix&
gfxMatrix::Multiply(const gfxMatrix& m)
{
cairo_matrix_multiply(CAIRO_MATRIX(this), CAIRO_MATRIX(this), CONST_CAIRO_MATRIX(&m));
return *this;
}
const gfxMatrix&
gfxMatrix::PreMultiply(const gfxMatrix& m)
{
cairo_matrix_multiply(CAIRO_MATRIX(this), CONST_CAIRO_MATRIX(&m), CAIRO_MATRIX(this));
return *this;
}
gfxPoint
gfxMatrix::Transform(const gfxPoint& point) const
{
gfxPoint ret = point;
cairo_matrix_transform_point(CONST_CAIRO_MATRIX(this), &ret.x, &ret.y);
return ret;
}
gfxSize
gfxMatrix::Transform(const gfxSize& size) const
{
gfxSize ret = size;
cairo_matrix_transform_distance(CONST_CAIRO_MATRIX(this), &ret.width, &ret.height);
return ret;
}
gfxRect
gfxMatrix::Transform(const gfxRect& rect) const
{
return gfxRect(Transform(rect.pos), Transform(rect.size));
}
gfxRect
gfxMatrix::TransformBounds(const gfxRect& rect) const
{
/* Code taken from cairo-matrix.c, _cairo_matrix_transform_bounding_box isn't public */
int i;
double quad_x[4], quad_y[4];
double min_x, max_x;
double min_y, max_y;
quad_x[0] = rect.pos.x;
quad_y[0] = rect.pos.y;
cairo_matrix_transform_point (CONST_CAIRO_MATRIX(this), &quad_x[0], &quad_y[0]);
quad_x[1] = rect.pos.x + rect.size.width;
quad_y[1] = rect.pos.y;
cairo_matrix_transform_point (CONST_CAIRO_MATRIX(this), &quad_x[1], &quad_y[1]);
quad_x[2] = rect.pos.x;
quad_y[2] = rect.pos.y + rect.size.height;
cairo_matrix_transform_point (CONST_CAIRO_MATRIX(this), &quad_x[2], &quad_y[2]);
quad_x[3] = rect.pos.x + rect.size.width;
quad_y[3] = rect.pos.y + rect.size.height;
cairo_matrix_transform_point (CONST_CAIRO_MATRIX(this), &quad_x[3], &quad_y[3]);
min_x = max_x = quad_x[0];
min_y = max_y = quad_y[0];
for (i = 1; i < 4; i++) {
if (quad_x[i] < min_x)
min_x = quad_x[i];
if (quad_x[i] > max_x)
max_x = quad_x[i];
if (quad_y[i] < min_y)
min_y = quad_y[i];
if (quad_y[i] > max_y)
max_y = quad_y[i];
}
// we don't compute this now
#if 0
if (is_tight) {
/* it's tight if and only if the four corner points form an axis-aligned
rectangle.
And that's true if and only if we can derive corners 0 and 3 from
corners 1 and 2 in one of two straightforward ways...
We could use a tolerance here but for now we'll fall back to FALSE in the case
of floating point error.
*/
*is_tight =
(quad_x[1] == quad_x[0] && quad_y[1] == quad_y[3] &&
quad_x[2] == quad_x[3] && quad_y[2] == quad_y[0]) ||
(quad_x[1] == quad_x[3] && quad_y[1] == quad_y[0] &&
quad_x[2] == quad_x[0] && quad_y[2] == quad_y[3]);
}
#endif
return gfxRect(min_x, min_y, max_x - min_x, max_y - min_y);
}
PRBool
gfx3DMatrix::Is2D(gfxMatrix* aMatrix) const
{
if (_13 != 0.0f || _14 != 0.0f ||
_23 != 0.0f || _24 != 0.0f ||
_31 != 0.0f || _32 != 0.0f || _33 != 1.0f || _34 != 0.0f ||
_43 != 0.0f || _44 != 1.0f) {
return PR_FALSE;
}
if (aMatrix) {
aMatrix->xx = _11;
aMatrix->yx = _12;
aMatrix->xy = _21;
aMatrix->yy = _22;
aMatrix->x0 = _41;
aMatrix->y0 = _42;
}
return PR_TRUE;
}