1 files changed, 37 insertions, 0 deletions
diff --git a/graymap_alleg.h b/graymap_alleg.h
new file mode 100644
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+++ b/graymap_alleg.h
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+#ifndef _graymap_alleg_h_
+#define _graymap_alleg_h_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @file graymap_alleg.h
+ * 
+ * This header file conatins a function to render graymaps to allegro 4 bitmaps.
+ */
+#include <allegro.h>
+#include "graymap.h"
+
+/**
+ * Render a graymap to a allegro 4 bitmap.
+ *
+ * A palette is represented by two arrays. One array contains colors, the other
+ * one contains the corresponding grayscale values. This palette now represents
+ * a color gradient. The color which fits to the grayscale value will be
+ * returned.
+ *
+ * @param canvas The allegro 4 bitmap.
+ * @param gm The graymap.
+ * @param pal_cols Array of colors.
+ * @param pal_grays Array of grayscale values
+ * @param pal_n length of the arrays.
+ */
+extern void render_graymap_alleg(BITMAP* canvas, graymap_t* gm,
+ color_t* pal_cols, double* pal_grays, int pal_n);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif