Add pattern framework, impelement checker pattern.

1 files changed, 13 insertions, 0 deletions

diff --git a/libdimension/dimension/pigments.h b/libdimension/dimension/pigments.h
index f985362..31c0598 100644
--- a/libdimension/dimension/pigments.h
+++ b/libdimension/dimension/pigments.h
@@ -30,4 +30,17 @@ dmnsn_pigment *dmnsn_new_solid_pigment(dmnsn_color color);
 /* An image map */
 dmnsn_pigment *dmnsn_new_canvas_pigment(dmnsn_canvas *canvas);
 
+/* Color maps */
+typedef dmnsn_array dmnsn_color_map;
+
+dmnsn_color_map *dmnsn_new_color_map();
+void dmnsn_delete_color_map(dmnsn_color_map *map);
+
+void dmnsn_add_color_map_entry(dmnsn_color_map *map, double n, dmnsn_color c);
+dmnsn_color dmnsn_color_map_value(const dmnsn_color_map *map, double n);
+
+/* Color-mapped pigments */
+dmnsn_pigment *dmnsn_new_color_map_pigment(dmnsn_pattern *pattern,
+                                           dmnsn_color_map *map);
+
 #endif /* DIMENSION_PIGMENTS_H */