1 files changed, 32 insertions, 0 deletions
diff --git a/AnimationMove.c b/AnimationMove.c
new file mode 100644
index 0000000..487d220
--- /dev/null
+++ b/AnimationMove.c
@@ -0,0 +1,32 @@
+#include "AnimationMove.h"
+#include <math.h>
+
+ARGB
+AM_MoveLinear(const Animation* anim, u32 frameIndex, ARGB pixel, i32 r, i32 c, void* priv) {
+	struct AM_MoveLinear ml = *(struct AM_MoveLinear*)priv;
+
+	r = (r - ml.startRow - (i32)(frameIndex * ml.dRow));
+	c = (c - ml.startCol - (i32)(frameIndex * ml.dCol));
+
+	if (ml.wrapCoordinates == true) {
+		r %= anim->width;
+		c %= anim->height;
+	}
+
+	return ml.callback(anim, frameIndex, pixel, r, c, ml.priv);
+}
+
+ARGB
+AM_MoveSpin(const Animation* anim, u32 frameIndex, ARGB pixel, i32 r, i32 c, void* priv) {
+	struct AM_MoveSpin ms = *(struct AM_MoveSpin*)priv;
+
+	double radius = sqrt(r * r + c * c);
+	double phi = atan2(c, r);
+
+	phi += ms.theta * frameIndex;
+
+	r = (ms.centerRow + (i32)(radius * cos(phi)));
+	c = (ms.centerCol + (i32)(radius * sin(phi)));
+
+	return ms.callback(anim, frameIndex, pixel, r, c, ms.priv);
+}