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Add ImDrawList::AddImageQuad

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Adds a function
  AddImageQuad(user_texture_id, a, b, c, d, uva, uvb, uvc, uvd, col)
that shows a texture on a full quad. This allows showing arbitrary
rotations of a texture.
This commit is contained in:
Peter 2017-02-06 10:30:16 +01:00
parent 104936ab1a
commit 659b3fd259
2 changed files with 18 additions and 0 deletions
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1
imgui.h
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@ -1203,6 +1203,7 @@ struct ImDrawList
IMGUI_API void AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL);
IMGUI_API void AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL, float wrap_width = 0.0f, const ImVec4* cpu_fine_clip_rect = NULL);
IMGUI_API void AddImage(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& uv0 = ImVec2(0,0), const ImVec2& uv1 = ImVec2(1,1), ImU32 col = 0xFFFFFFFF);
IMGUI_API void AddImageQuad(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uva = ImVec2(0,0), const ImVec2& uvb = ImVec2(1,0), const ImVec2& uvc = ImVec2(1,1), const ImVec2& uvd = ImVec2(0,1), ImU32 col = 0xFFFFFFFF);
IMGUI_API void AddPolyline(const ImVec2* points, const int num_points, ImU32 col, bool closed, float thickness, bool anti_aliased);
IMGUI_API void AddConvexPolyFilled(const ImVec2* points, const int num_points, ImU32 col, bool anti_aliased);
IMGUI_API void AddBezierCurve(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments = 0);

17
imgui_draw.cpp
View File

@ -975,6 +975,23 @@ void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& a, const Im
PopTextureID();
}
void ImDrawList::AddImageQuad(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uva, const ImVec2& uvb, const ImVec2& uvc, const ImVec2& uvd, ImU32 col)
{
if ((col >> 24) == 0)
return;
// FIXME-OPT: This is wasting draw calls.
const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
if (push_texture_id)
PushTextureID(user_texture_id);
PrimReserve(6, 4);
PrimQuadUV(a, b, c, d, uva, uvb, uvc, uvd, col);
if (push_texture_id)
PopTextureID();
}
//-----------------------------------------------------------------------------
// ImDrawData
//-----------------------------------------------------------------------------