From 1cc8f72fb1c44e203a324e274038c2883c351fbb Mon Sep 17 00:00:00 2001 From: Syndamia Date: Sat, 28 Mar 2026 22:14:32 +0200 Subject: feat: Add animation capabilities with linear interpolation --- AnimationRender/F_Interpolate.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 AnimationRender/F_Interpolate.c (limited to 'AnimationRender/F_Interpolate.c') diff --git a/AnimationRender/F_Interpolate.c b/AnimationRender/F_Interpolate.c new file mode 100644 index 0000000..cc72163 --- /dev/null +++ b/AnimationRender/F_Interpolate.c @@ -0,0 +1,33 @@ +#include "F_Interpolate.h" +#include +#include +#include + +void Interpolate_callback(Interpolate* self, struct FrameContext* fc) { + if (self->interpolate == NULL) { + fprintf(stderr, "Interpolation function cannot be NULL!\n"); + return; + } + + double p = (double)(fc->frame - fc->startFrame) / (fc->endFrame - fc->startFrame); + + if (0.0 <= p && p <= 1.0) + self->interpolate(self->value, self->startValue, self->endValue, p); +} + +FrameCallback* Interpolate_setup(Interpolate obj) { + FrameCallback* fca = malloc(sizeof(struct FrameCallback)); + + fca->callback = (FrameCallback_callback)Interpolate_callback; + fca->callback_self = malloc(sizeof(obj)); + memcpy(fca->callback_self, &obj, sizeof(obj)); + + return fca; +} + +#define NUM_INTERPOLATE(a, b, perc) ((a) * (1.0 - (perc)) + (b) * (perc)) + +void Interpolate_TransformCenter(TransformCenter* value, const TransformCenter* start, const TransformCenter* end, double progress) { + value->centerX = NUM_INTERPOLATE(start->centerX, end->centerX, progress); + value->centerY = NUM_INTERPOLATE(start->centerY, end->centerY, progress); +} -- cgit v1.2.3