Refactor and test color

Signed-off-by: pacien <pacien.trangirard@pacien.net>

1 files changed, 61 insertions, 0 deletions

diff --git a/include/painter/color.h b/include/painter/color.h
new file mode 100644
index 0000000..2aeee3e
--- /dev/null
+++ b/include/painter/color.h
@@ -0,0 +1,61 @@
+#ifndef UPEM_MORPHING_COLOR
+#define UPEM_MORPHING_COLOR
+
+/**
+ * File: color.h
+ *
+ * See also:
+ *   A rainbow
+ */
+
+#include <MLV/MLV_color.h>
+#include <stdbool.h>
+#include "common/time.h"
+
+/**
+ * Type: ColorComponent
+ * Represents a single colour component of 32-bits RGBa tuple.
+ */
+typedef uint8_t ColorComponent;
+
+/**
+ * Type: ColorPixel
+ * Represents a single RGBa coloured pixel.
+ * Compatible with the libMLV representation.
+ */
+typedef union {
+  struct {
+    ColorComponent a, b, g, r;
+  } rgba;
+
+  MLV_Color mlv;
+} Color;
+
+/**
+ * Function: color_equals
+ * Compares the supplied colors.
+ *
+ * Parameters:
+ *   c1 - the first color
+ *   c2 - the second color
+ *
+ * Returns:
+ *   T(c1 is the same color as c2)
+ */
+bool color_equals(Color c1, Color c2);
+
+/**
+ * Function: color_blend
+ * Blends two colors.
+ *
+ * Parameters:
+ *   origin   - the first color
+ *   target   - the second color
+ *   distance - the distance from the first color
+ *
+ * Returns:
+ *   The blended color
+ */
+Color color_blend(Color origin, Color target, TimeVector distance);
+
+#endif