LYGIA Shader Library

Dependencies:

• lygia/math/const.glsl
• lygia/space/rotate.glsl
• lygia/space/sqTile.glsl

Use:

<vec4> windmillTile(<vec4> tiles[, <float> fullturn = TAU])

<vec2> windmillTile(<vec2> st [, <float|vec2> scale])

Check it on Github

#ifndef FNC_WINDMILLTILE
#define FNC_WINDMILLTILE
vec4 windmillTile(vec4 t, float turn) {
    float a = ( abs(mod(t.z, 2.0)-
                    mod(t.w, 2.0))+
                mod(t.w, 2.0) * 2.0)*
                0.25;
    return vec4(rotate(t.xy, a * turn), t.zw);
}

vec4 windmillTile(vec4 t) {
    return windmillTile(t, TAU);
}

vec4 windmillTile(vec2 v) {
    return windmillTile(sqTile(v));
}

vec4 windmillTile(vec2 v, float s) {
    return windmillTile(v * s);
}

vec4 windmillTile(vec2 v, vec2 s) {
    return windmillTile(v * s);
}
#endif

Dependencies:

• lygia/math/const.glsl
• lygia/space/rotate.glsl
• lygia/space/sqTile.glsl

Use:

<float4> windmillTile(<float4> tiles[, <float> fullturn = TAU])

<float2> windmillTile(<float2> st [, <float|float2> scale])

Check it on Github

#ifndef FNC_WINDMILLTILE
#define FNC_WINDMILLTILE
float4 windmillTile(float4 tile, float turn) {
    float a = ( abs(mod(tile.z, 2.0)-
                    mod(tile.w, 2.0))+
                mod(tile.w, 2.0) * 2.0)*
                0.25;
    return float4(rotate(tile.xy, a * turn), tile.zw);
}

float4 windmillTile(float4 tile) {
    return windmillTile(tile, TAU);
}

float4 windmillTile(float2 st) {
    return windmillTile(sqTile(st));
}

float4 windmillTile(float2 st, float scale) {
    return windmillTile(st * scale);
}

float4 windmillTile(float2 st, float2 scale) {
    return windmillTile(st * scale);
}
#endif