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-rw-r--r--src/modules/flui2d/flui2d.c46
1 files changed, 37 insertions, 9 deletions
diff --git a/src/modules/flui2d/flui2d.c b/src/modules/flui2d/flui2d.c
index bbebcc6..84306f5 100644
--- a/src/modules/flui2d/flui2d.c
+++ b/src/modules/flui2d/flui2d.c
@@ -8,6 +8,8 @@
#include "til_fb.h"
#include "til_module_context.h"
#include "til_settings.h"
+#include "til_stream.h"
+#include "til_tap.h"
/* This code is almost entirely taken from the paper:
@@ -188,9 +190,19 @@ typedef struct flui2d_setup_t {
typedef struct flui2d_context_t {
til_module_context_t til_module_context;
+ flui2d_setup_t setup;
+
+ struct {
+ til_tap_t viscosity, diffusion, decay;
+ } taps;
+
+ struct {
+ float viscosity, diffusion, decay;
+ } vars;
+
+ float *viscosity, *diffusion, *decay;
+
flui2d_t fluid;
- flui2d_emitters_t emitters;
- float clockstep;
float xf, yf;
} flui2d_context_t;
@@ -262,11 +274,11 @@ static til_module_context_t * flui2d_create_context(const til_module_t *module,
gamma_init(1.4f);
}
- ctxt->fluid.visc = ((flui2d_setup_t *)setup)->viscosity;
- ctxt->fluid.diff = ((flui2d_setup_t *)setup)->diffusion;
- ctxt->fluid.decay = ((flui2d_setup_t *)setup)->decay;
- ctxt->emitters = ((flui2d_setup_t *)setup)->emitters;
- ctxt->clockstep = ((flui2d_setup_t *)setup)->clockstep;
+ ctxt->setup = *((flui2d_setup_t *)setup);
+
+ ctxt->taps.viscosity = til_tap_init_float(ctxt, &ctxt->viscosity, 1, &ctxt->vars.viscosity, "viscosity");
+ ctxt->taps.diffusion = til_tap_init_float(ctxt, &ctxt->diffusion, 1, &ctxt->vars.diffusion, "diffusion");
+ ctxt->taps.decay = til_tap_init_float(ctxt, &ctxt->decay, 1, &ctxt->vars.decay, "decay");
return &ctxt->til_module_context;
}
@@ -282,7 +294,23 @@ static void flui2d_prepare_frame(til_module_context_t *context, til_stream_t *st
*res_frame_plan = (til_frame_plan_t){ .fragmenter = til_fragmenter_tile64 };
- switch (ctxt->emitters) {
+ if (!til_stream_tap_context(stream, context, NULL, &ctxt->taps.viscosity))
+ *ctxt->viscosity = ctxt->setup.viscosity;
+
+ if (!til_stream_tap_context(stream, context, NULL, &ctxt->taps.diffusion))
+ *ctxt->diffusion = ctxt->setup.diffusion;
+
+ if (!til_stream_tap_context(stream, context, NULL, &ctxt->taps.decay))
+ *ctxt->decay = ctxt->setup.decay;
+
+ /* this duplication of visc/diff/decay is silly, it's just a product of this
+ * module being written as a flui2d_t class in-situ but distinct from the module.
+ */
+ ctxt->fluid.visc = *ctxt->viscosity;
+ ctxt->fluid.diff = *ctxt->diffusion;
+ ctxt->fluid.decay = *ctxt->decay;
+
+ switch (ctxt->setup.emitters) {
case FLUI2D_EMITTERS_FIGURE8: {
int x = (cos(r) * .4f + .5f) * (float)ROOT; /* figure eight pattern for the added densities */
int y = (sin(r * 2.f) * .4f + .5f) * (float)ROOT;
@@ -304,7 +332,7 @@ static void flui2d_prepare_frame(til_module_context_t *context, til_stream_t *st
#define FLUI2D_CLOCKGRID_SIZE (ROOT>>4)
#define FLUI2D_CLOCKGRID_STEP (ROOT/FLUI2D_CLOCKGRID_SIZE)
for (int y = FLUI2D_CLOCKGRID_STEP; y < ROOT; y += FLUI2D_CLOCKGRID_STEP) {
- for (int x = FLUI2D_CLOCKGRID_STEP; x < ROOT; x += FLUI2D_CLOCKGRID_STEP, r += ctxt->clockstep * M_PI * 2) {
+ for (int x = FLUI2D_CLOCKGRID_STEP; x < ROOT; x += FLUI2D_CLOCKGRID_STEP, r += ctxt->setup.clockstep * M_PI * 2) {
ctxt->fluid.dens_prev_r[IX(x, y)] = .5f + cos(r) * .5f;
ctxt->fluid.dens_prev_g[IX(x, y)] = .5f + sin(r) * .5f;
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