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#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);
}
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