lygia/sample/heatmap)sample a value encoded on a heatmap
Dependencies:
Use:
sampleFlow(<SAMPLER_TYPE> tex, <vec2> st)
#ifndef SAMPLEHEATMAP_SAMPLE_FNC
#define SAMPLEHEATMAP_SAMPLE_FNC(TEX, UV) SAMPLER_FNC(TEX, UV).rgb
#endif
#ifndef FNC_SAMPLEHEATMAP
#define FNC_SAMPLEHEATMAP
float sampleHeatmap(SAMPLER_TYPE tex, vec2 st) { return rgb2heat( SAMPLEHEATMAP_SAMPLE_FNC(tex, st) ); }
float sampleHeatmap(SAMPLER_TYPE tex, vec2 st, float _min, float _max) { return _min + sampleHeatmap(tex, st) * (_max - _min); }
#endif
Dependencies:
Use:
sampleFlow(<SAMPLER_TYPE> tex, <float2> st)
#ifndef SAMPLEHEATMAP_SAMPLE_FNC
#define SAMPLEHEATMAP_SAMPLE_FNC(TEX, UV) SAMPLER_FNC(TEX, UV).rgb
#endif
#ifndef FNC_SAMPLEHEATMAP
#define FNC_SAMPLEHEATMAP
float sampleHeatmap(sampler2D tex, float2 st) { return rgb2heat( SAMPLEHEATMAP_SAMPLE_FNC(tex, st) ); }
float sampleHeatmap(sampler2D tex, float2 st, float _min, float _max) { return _min + sampleHeatmap(tex, st) * (_max - _min); }
#endif
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