lygia/space/ratio)Fix the aspect ratio of a space keeping things squared for you, in a similar way that aspect.glsl does, but while scaling the space to keep the entire 0.0,0.0 ~ 1.0,1.0 range visible
Use:
<vec2> ratio(<vec2> st, <vec2> st_size)
#ifndef FNC_RATIO
#define FNC_RATIO
vec2 ratio(in vec2 v, in vec2 s) {
return mix( vec2((v.x*s.x/s.y)-(s.x*.5-s.y*.5)/s.y,v.y),
vec2(v.x,v.y*(s.y/s.x)-(s.y*.5-s.x*.5)/s.x),
step(s.x,s.y));
}
#endif
Use:
<float2> ratio(<float2> st, <float2> st_size)
#ifndef FNC_RATIO
#define FNC_RATIO
float2 ratio(in float2 st, in float2 s) {
return lerp( float2((st.x*s.x/s.y)-(s.x*.5-s.y*.5)/s.y,st.y),
float2(st.x,st.y*(s.y/s.x)-(s.y*.5-s.x*.5)/s.x),
step(s.x, s.y));
}
#endif
Use:
<float2> ratio(<float2> st, <float2> st_size)
#ifndef FNC_RATIO
#define FNC_RATIO
float2 ratio(float2 v, float2 s) {
return mix( float2((v.x*s.x/s.y)-(s.x*.5-s.y*.5)/s.y,v.y),
float2(v.x,v.y*(s.y/s.x)-(s.y*.5-s.x*.5)/s.x),
step(s.x,s.y));
}
#endif
fn ratio(st: vec2f, s: vec2f) -> vec2f {
return mix( vec2f((st.x*s.x/s.y)-(s.x*.5-s.y*.5)/s.y,st.y),
vec2f(st.x,st.y*(s.y/s.x)-(s.y*.5-s.x*.5)/s.x),
step(s.x,s.y));
}
Dependencies:
Use:
ratio(float2 st, float2 st_size)
#ifndef FNC_RATIO
#define FNC_RATIO
inline __host__ __device__ float2 ratio(float2 st, float2 s) {
return lerp( make_float2((st.x*s.x/s.y)-(s.x*.5-s.y*.5)/s.y, st.y),
make_float2( st.x,st.y*(s.y/s.x)-(s.y*.5-s.x*.5)/s.x),
step(s.x, s.y) );
}
#endif
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