AddBezier()->AddBezierCurve(). PathBezierTo()->PathBezierCurveTo(), and reads current point back, more standard (#311)

imgui.h

@@ -1101,7 +1101,7 @@ struct ImDrawList
     IMGUI_API void  AddImage(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& uv0, const ImVec2& uv1, 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);
-	inline    void  AddBezier(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments = 0) { PathBezierTo(pos0, cp0, cp1, pos1, num_segments); PathStroke(col, false, thickness); }
+    IMGUI_API void  AddBezierCurve(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments = 0);
 
     // Stateful path API, add points then finish with PathFill() or PathStroke()
     inline    void  PathClear()                                                 { _Path.resize(0); }
@@ -1111,7 +1111,7 @@ struct ImDrawList
 	inline    void  PathStroke(ImU32 col, bool closed, float thickness = 1.0f)  { AddPolyline(_Path.Data, _Path.Size, col, closed, thickness, true); PathClear(); }
 	IMGUI_API void  PathArcTo(const ImVec2& centre, float radius, float a_min, float a_max, int num_segments = 10);
     IMGUI_API void  PathArcToFast(const ImVec2& centre, float radius, int a_min_of_12, int a_max_of_12);                 // Use precomputed angles for a 12 steps circle
-	IMGUI_API void  PathBezierTo(const ImVec2& p0, const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, int num_segments = 0);
+	IMGUI_API void  PathBezierCurveTo(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, int num_segments = 0);
     IMGUI_API void  PathRect(const ImVec2& rect_min, const ImVec2& rect_max, float rounding = 0.0f, int rounding_corners = 0x0F);
 
     // Channels

imgui_draw.cpp

@@ -665,9 +665,9 @@ static void PathBezierToCasteljau(ImVector<ImVec2>* path, float x1, float y1, fl
     }
 }
 
-void ImDrawList::PathBezierTo(const ImVec2& p1, const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments)
+void ImDrawList::PathBezierCurveTo(const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments)
 {
-    PathLineToMergeDuplicate(p1);
+    ImVec2 p1 = _Path.back();
     if (num_segments == 0)
     {
         // Auto-tessellated
@@ -793,6 +793,16 @@ void ImDrawList::AddCircleFilled(const ImVec2& centre, float radius, ImU32 col,
     PathFill(col);
 }
 
+void ImDrawList::AddBezierCurve(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments) 
+{ 
+    if ((col >> 24) == 0)
+        return;
+
+    PathLineTo(pos0); 
+    PathBezierCurveTo(cp0, cp1, pos1, num_segments); 
+    PathStroke(col, false, thickness); 
+}
+
 void ImDrawList::AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end, float wrap_width, const ImVec4* cpu_fine_clip_rect)
 {
     if ((col >> 24) == 0)