Implement pigment maps.

3 files changed, 36 insertions, 0 deletions

diff --git a/libdimension/dimension/array.h b/libdimension/dimension/array.h
index 10afa9c..c789eed 100644
--- a/libdimension/dimension/array.h
+++ b/libdimension/dimension/array.h
@@ -227,6 +227,20 @@ dmnsn_array_remove(dmnsn_array *array, size_t i)
   dmnsn_array_resize(array, size - 1);
 }
 
+/**
+ * Apply a callback to each element of an array.
+ * @param[in,out] array     The array.
+ * @param[in]     callback  The callback to apply to the elements.
+ */
+DMNSN_INLINE void
+dmnsn_array_apply(dmnsn_array *array, dmnsn_callback_fn *callback)
+{
+  char *i, *last = (char *)dmnsn_array_last(array);
+  for (i = (char *)dmnsn_array_first(array); i <= last; i += array->obj_size) {
+    (*callback)((void *)i);
+  }
+}
+
 /* Macros to shorten array iteration */
 
 /**
diff --git a/libdimension/dimension/map.h b/libdimension/dimension/map.h
index 1cd0f55..5e7134d 100644
--- a/libdimension/dimension/map.h
+++ b/libdimension/dimension/map.h
@@ -73,4 +73,11 @@ size_t dmnsn_map_size(const dmnsn_map *map);
 void dmnsn_evaluate_map(const dmnsn_map *map, double n,
                         double *val, void *obj1, void *obj2);
 
+/**
+ * Apply a callback to each element of a map.
+ * @param[in,out] map       The map.
+ * @param[in]     callback  The callback to apply to the elements.
+ */
+void dmnsn_map_apply(dmnsn_map *map, dmnsn_callback_fn *callback);
+
 #endif /* DIMENSION_MAP_H */
diff --git a/libdimension/dimension/pigments.h b/libdimension/dimension/pigments.h
index 687080f..aa2c7c3 100644
--- a/libdimension/dimension/pigments.h
+++ b/libdimension/dimension/pigments.h
@@ -56,4 +56,19 @@ dmnsn_map *dmnsn_new_color_map();
 dmnsn_pigment *dmnsn_new_color_map_pigment(dmnsn_pattern *pattern,
                                            dmnsn_map *map);
 
+/**
+ * Construct a pigment map.
+ * @return An empty pigment map.
+ */
+dmnsn_map *dmnsn_new_pigment_map();
+
+/**
+ * A pigment-mapped pigment.
+ * @param[in,out] pattern  The pattern of the pigment.
+ * @param[in,out] map      The pigment map to apply to the pattern.
+ * @return A pigment mapping the pattern to other pigments.
+ */
+dmnsn_pigment *dmnsn_new_pigment_map_pigment(dmnsn_pattern *pattern,
+                                             dmnsn_map *map);
+
 #endif /* DIMENSION_PIGMENTS_H */