add is_quad_convex_v2(), SET_UINT_IN_POINTER, GET_UINT_FROM_POINTER macros & some minor edits.

source/blender/blenlib/BLI_math_geom.h

@@ -55,6 +55,7 @@ float area_quad_v3(const float a[3], const float b[3], const float c[3], const f
 float area_poly_v3(int nr, float verts[][3], const float normal[3]);
 
 int is_quad_convex_v3(const float v1[3], const float v2[3], const float v3[3], const float v4[3]);
+int is_quad_convex_v2(const float v1[2], const float v2[2], const float v3[2], const float v4[2]);
 
 /********************************* Distance **********************************/
 

source/blender/blenlib/BLI_utildefines.h

@@ -232,6 +232,10 @@
 #define SET_INT_IN_POINTER(i)    ((void *)(intptr_t)(i))
 #define GET_INT_FROM_POINTER(i)  ((int)(intptr_t)(i))
 
+#define SET_UINT_IN_POINTER(i)    ((void *)(uintptr_t)(i))
+#define GET_UINT_FROM_POINTER(i)  ((unsigned int)(uintptr_t)(i))
+
+
 /* Macro to convert a value to string in the preprocessor
  * STRINGIFY_ARG: gives the argument as a string
  * STRINGIFY_APPEND: appends any argument 'b' onto the string argument 'a',

source/blender/blenlib/intern/math_geom.c

@@ -3278,3 +3278,10 @@ int is_quad_convex_v3(const float v1[3], const float v2[3], const float v3[3], c
 	/* linetests, the 2 diagonals have to instersect to be convex */
 	return (isect_line_line_v2(vec[0], vec[2], vec[1], vec[3]) > 0) ? TRUE : FALSE;
 }
+
+int is_quad_convex_v2(const float v1[2], const float v2[2], const float v3[2], const float v4[2])
+{
+	/* linetests, the 2 diagonals have to instersect to be convex */
+	return (isect_line_line_v2(v1, v3, v2, v4) > 0) ? TRUE : FALSE;
+}
+

source/blender/blenlib/intern/rct.c

@@ -41,6 +41,13 @@
 #include "DNA_vec_types.h"
 #include "BLI_rect.h"
 
+/**
+ * Determine if a rect is empty. An empty
+ * rect is one with a zero (or negative)
+ * width or height.
+ *
+ * \return True if \a rect is empty.
+ */
 int BLI_rcti_is_empty(const rcti *rect)
 {
 	return ((rect->xmax <= rect->xmin) || (rect->ymax <= rect->ymin));