- add animated GIF example with a palette per frame (local palette)

examples/CMakeLists.txt

@@ -5,7 +5,8 @@ include_directories (BEFORE ${GD_SOURCE_DIR}/src "${CMAKE_BINARY_DIR}")
 SET(TESTS_FILES
   tgaread
   crop
-  nnquant
+	nnquant
+	gif
 )
 
 if (WIN32)

examples/gif.c

@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <gd.h>
+
+int main(int argc, char ** argv)
+{
+	int i;
+	FILE * out;
+
+	gdImagePtr im;
+	gdImagePtr prev =NULL;
+	int white, black;
+
+	im = gdImageCreate(100, 100);
+	if (!im) {
+		fprintf(stderr, "can't create image");
+		return 1;
+	}
+
+	out = fopen("anim.gif", "wb");
+	if (!out) {
+		fprintf(stderr, "can't create file %s", "anim.gif");
+		return 1;
+	}
+
+   white = gdImageColorAllocate(im, 255, 255, 255);
+   gdImageGifAnimBegin(im, out, 1, -1);
+
+	for(i = 0; i < 20; i++) {
+		int r,g,b;
+		im = gdImageCreate(100, 100);
+		r = rand() % 255;
+		g = rand() % 255;
+		b = rand() % 255;
+
+		white = gdImageColorAllocate(im, 255, 255, 255);
+		black = gdImageColorAllocate(im,  r, g, b);
+		printf("(%i, %i, %i)\n",r, g, b);
+		gdImageFilledRectangle(im, rand() % 100, rand() % 100, rand() % 100, rand() % 100, black);
+		gdImageGifAnimAdd(im, out, 1, 0, 0, 10, 1, prev);
+
+		if(prev) {
+			gdImageDestroy(prev);
+		}
+		prev = im;
+	}
+
+	gdImageGifAnimEnd(out);
+	fclose(out);
+
+	return 0;
+}