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https://github.com/DigvijaysinhGohil/Godot-Shader-Lib.git
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10 lines
486 B
Plaintext
10 lines
486 B
Plaintext
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float polygon_shape(vec2 uv, int sides, float width, float height){
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float _a_width = width * cos(PI / float(sides));
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float _a_height = height * cos(PI / float(sides));
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uv = (uv * 2.0 - 1.0) / vec2(_a_width, _a_height);
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uv.y *= -1.0;
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float _polar_coords = atan(uv.x, uv.y);
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float _radius = 2.0 * PI / float(sides);
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float _distance = cos(floor(0.5 + _polar_coords / _radius) * _radius - _polar_coords) * length(uv);
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return clamp((1.0 - _distance) / fwidth(_distance), 0.0, 1.0);
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}
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