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21 lines
548 B
C
21 lines
548 B
C
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#ifndef CORNER
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#define CORNER
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#pragma parameter cornersize "Corner Size" 0.03 0.001 1.0 0.005
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#pragma parameter cornersmooth "Corner Smoothness" 1000.0 80.0 2000.0 100.0
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const vec2 corner_aspect = vec2(1.0, 0.75);
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float corner(vec2 coord)
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{
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coord = (coord - vec2(0.5)) + vec2(0.5, 0.5);
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coord = min(coord, vec2(1.0) - coord) * corner_aspect;
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vec2 cdist = vec2(cornersize);
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coord = (cdist - min(coord, cdist));
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float dist = sqrt(dot(coord, coord));
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return clamp((cdist.x - dist)*cornersmooth, 0.0, 1.0);
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}
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#endif
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