Add msdf_shape_one_shot_distance function

core/msdfgen-c.cpp

@@ -13,7 +13,9 @@
  */
 
 #include "../msdfgen-c.h"
+
 #include "../msdfgen.h"
+#include "ShapeDistanceFinder.h"
 
 #include <utility>
 
@@ -298,6 +300,15 @@ MSDF_API int msdf_shape_edge_colors_by_distance(msdf_shape_handle shape, const d
     return MSDF_SUCCESS;
 }
 
+MSDF_API int msdf_shape_one_shot_distance(msdf_shape_const_handle shape, const msdf_vector2_t* origin, double* distance) {
+    if(shape == nullptr || origin == nullptr) {
+        return MSDF_ERR_INVALID_ARG;
+    }
+    *distance = msdfgen::SimpleTrueShapeDistanceFinder::oneShotDistance(*reinterpret_cast<const msdfgen::Shape*>(shape),
+                                                                        *reinterpret_cast<const msdfgen::Point2*>(origin));
+    return MSDF_SUCCESS;
+}
+
 MSDF_API void msdf_shape_free(msdf_shape_handle shape) {
     delete reinterpret_cast<msdfgen::Shape*>(shape);
 }

msdfgen-c.h

@@ -319,6 +319,16 @@ MSDF_API int msdf_shape_edge_colors_ink_trap(msdf_shape_handle shape, double ang
  */
 MSDF_API int msdf_shape_edge_colors_by_distance(msdf_shape_handle shape, double angle_threshold);
 
+/**
+ * Finds the distance between shape and origin.
+ * Does not allocate result cache used to optimize performance of multiple queries.
+ * @param shape A pointer to the shape to find the distance to.
+ * @param origin The point to find the distance relative to the given shape to.
+ * @param distance A pointer to a variable to be populated with the calculated distance to the given shape.
+ * @returns @code MSDF_SUCCESS@endcode on success, otherwise one of the constants prefixed with @code MSDF_ERR_@endcode.
+ */
+MSDF_API int msdf_shape_one_shot_distance(msdf_shape_const_handle shape, const msdf_vector2_t* origin, double* distance);
+
 /**
  * Calls the destructor of the given bitmap and frees its memory using the
  * internal allocator.