24 lines
No EOL
763 B
Text
24 lines
No EOL
763 B
Text
/*
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contributors: Patricio Gonzalez Vivo
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description: create a perspective matrix
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use: <mat4> perspective(<float> fov, <float> aspect, <float> near, <float> far);
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license:
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- Copyright (c) 2021 Patricio Gonzalez Vivo under Prosperity License - https://prosperitylicense.com/versions/3.0.0
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- Copyright (c) 2021 Patricio Gonzalez Vivo under Patron License - https://lygia.xyz/license
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*/
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#ifndef FNC_PERSPECTIVE
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#define FNC_PERSPECTIVE
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mat4 perspective(float fov, float aspect, float near, float far) {
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float f = 1.0 / tan(fov / 2.0);
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float nf = 1.0 / (near - far);
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return mat4(
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f / aspect, 0.0, 0.0, 0.0,
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0.0, f, 0.0, 0.0,
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0.0, 0.0, (far + near) * nf, -1.0,
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0.0, 0.0, (2.0 * far * near) * nf, 0.0
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);
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}
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#endif |