63 lines
1.8 KiB
Text
63 lines
1.8 KiB
Text
/*
|
|
contributors: Patricio Gonzalez Vivo
|
|
description: scale a 2D space variable
|
|
use: scale(<float2> st, <float2|float> scale_factor [, <float2> center])
|
|
options:
|
|
- CENTER_2D
|
|
- CENTER_3D
|
|
license:
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
|
|
- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
|
|
*/
|
|
|
|
#ifndef FNC_SCALE
|
|
#define FNC_SCALE
|
|
float2 scale(float st, float s, float2 center) { return (st - center) * s + center; }
|
|
float2 scale(float st, float s) {
|
|
#ifdef CENTER_2D
|
|
return scale(st, s, CENTER_2D);
|
|
#else
|
|
return scale(st, s, float2(0.5));
|
|
#endif
|
|
}
|
|
|
|
float2 scale(float2 st, float2 s, float2 center) { return (st - center) * s + center; }
|
|
float2 scale(float2 st, float s, float2 center) { return scale(st, float2(s), center); }
|
|
float2 scale(float2 st, float2 s) {
|
|
#ifdef CENTER_2D
|
|
return (st - CENTER_2D) * s + CENTER_2D;
|
|
#else
|
|
return (st - 0.5) * s + 0.5;
|
|
#endif
|
|
}
|
|
|
|
float2 scale(float2 st, float s) {
|
|
#ifdef CENTER_2D
|
|
return (st - CENTER_2D) * s + CENTER_2D;
|
|
#else
|
|
return (st - 0.5) * s + 0.5;
|
|
#endif
|
|
}
|
|
|
|
float3 scale(float3 st, float3 s, float3 center) { return (st - center) * s + center; }
|
|
float3 scale(float3 st, float s, float3 center) { return (st - center) * s + center; }
|
|
float3 scale(float3 st, float3 s) {
|
|
#ifdef CENTER_3D
|
|
return (st - CENTER_3D) * s + CENTER_3D;
|
|
#else
|
|
return (st - 0.5) * s + 0.5;
|
|
#endif
|
|
}
|
|
|
|
float3 scale(float3 st, float s) {
|
|
#ifdef CENTER_3D
|
|
return (st - CENTER_3D) * s + CENTER_3D;
|
|
#else
|
|
return (st - 0.5) * s + 0.5;
|
|
#endif
|
|
}
|
|
|
|
// For tiles
|
|
float4 scale(float4 st, float s) { return float4(scale(st.xy, s), st.zw); }
|
|
float4 scale(float4 st, float2 s) { return float4(scale(st.xy, s), st.zw); }
|
|
#endif
|