lygia/space/hexTile)make some hexagonal tiles. XY provide coordenates of the tile. While Z provides the distance to the center of the tile
Use:
<vec4> hexTile(<vec2> st)
#ifndef FNC_HEXTILE
#define FNC_HEXTILE
vec4 hexTile(vec2 st) {
vec2 s = vec2(1., 1.7320508);
vec2 o = vec2(.5, 1.);
st = st.yx;
vec4 i = floor(vec4(st,st-o)/s.xyxy)+.5;
vec4 f = vec4(st-i.xy*s, st-(i.zw+.5)*s);
return dot(f.xy,f.xy) < dot(f.zw,f.zw) ?
vec4(f.yx+.5, i.xy):
vec4(f.wz+.5, i.zw+o);
}
#endif
Use:
<float4> hexTile(<float2> st)
#ifndef FNC_HEXTILE
#define FNC_HEXTILE
float4 hexTile(float2 st) {
float2 s = float2(1., 1.7320508);
float2 o = float2(.5, 1.);
st = st.yx;
float4 i = floor(float4(st,st-o)/s.xyxy)+.5;
float4 f = float4(st-i.xy*s, st-(i.zw+.5)*s);
return dot(f.xy,f.xy) < dot(f.zw,f.zw) ?
float4(f.yx+.5, i.xy):
float4(f.wz+.5, i.zw+o);
}
#endif
Use:
<float4> hexTile(<float2> st)
#ifndef FNC_HEXTILE
#define FNC_HEXTILE
float4 hexTile(float2 st) {
float2 s = float2(1., 1.7320508);
float2 o = float2(.5, 1.);
st = st.yx;
float4 i = floor(float4(st,st-o)/s.xyxy)+.5;
float4 f = float4(st-i.xy*s, st-(i.zw+.5)*s);
return dot(f.xy,f.xy) < dot(f.zw,f.zw) ?
float4(f.yx+.5, i.xy):
float4(f.wz+.5, i.zw+o);
}
#endif
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