ImDrawList: Added AddQuad(), AddQuadFilled() helpers.

imgui.h

@@ -1139,6 +1139,8 @@ struct ImDrawList
     IMGUI_API void  AddRect(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding = 0.0f, int rounding_corners = 0x0F, float thickness = 1.0f);   // a: upper-left, b: lower-right
     IMGUI_API void  AddRectFilled(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding = 0.0f, int rounding_corners = 0x0F);                     // a: upper-left, b: lower-right
     IMGUI_API void  AddRectFilledMultiColor(const ImVec2& a, const ImVec2& b, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left);
+    IMGUI_API void  AddQuad(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col, float thickness = 1.0f);
+    IMGUI_API void  AddQuadFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col);
     IMGUI_API void  AddTriangle(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col, float thickness = 1.0f);
     IMGUI_API void  AddTriangleFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col);
     IMGUI_API void  AddCircle(const ImVec2& centre, float radius, ImU32 col, int num_segments = 12, float thickness = 1.0f);

imgui_draw.cpp

@@ -823,6 +823,30 @@ void ImDrawList::AddRectFilledMultiColor(const ImVec2& a, const ImVec2& c, ImU32
     PrimWriteVtx(ImVec2(a.x, c.y), uv, col_bot_left);
 }
 
+void ImDrawList::AddQuad(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col, float thickness)
+{
+    if ((col >> 24) == 0)
+        return;
+
+    PathLineTo(a);
+    PathLineTo(b);
+    PathLineTo(c);
+    PathLineTo(d);
+    PathStroke(col, true, thickness);
+}
+
+void ImDrawList::AddQuadFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col)
+{
+    if ((col >> 24) == 0)
+        return;
+
+    PathLineTo(a);
+    PathLineTo(b);
+    PathLineTo(c);
+    PathLineTo(d);
+    PathFill(col);
+}
+
 void ImDrawList::AddTriangle(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col, float thickness)
 {
     if ((col >> 24) == 0)