61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
#pragma once
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#include "math.h"
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#include "matrices.h"
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inline static struct mat4x4 translation(float x, float y, float z)
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{
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return mat4x4(1.0f, 0.0f, 0.0f, x,
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0.0f, 1.0f, 0.0f, y,
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0.0f, 0.0f, 1.0f, z,
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0.0f, 0.0f, 0.0f, 1.0f);
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}
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inline static struct mat4x4 scaling(float x, float y, float z)
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{
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return mat4x4(x, 0.0f, 0.0f, 0.0f,
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0.0f, y, 0.0f, 0.0f,
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0.0f, 0.0f, z, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f);
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}
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static const float tau = 6.283185307179586;
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static const float pi = tau / 2.0f;
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inline static struct mat4x4 rotation_x(float r)
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{
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return mat4x4(1.0f, 0.0f, 0.0f, 0.0f,
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0.0f, cosf(r), -sinf(r), 0.0f,
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0.0f, sinf(r), cosf(r), 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f);
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}
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inline static struct mat4x4 rotation_y(float r)
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{
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return mat4x4( cosf(r), 0.0f, sinf(r), 0.0f,
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0.0f, 1.0f, 0.0f, 0.0f,
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-sinf(r), 0.0f, cosf(r), 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f);
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}
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inline static struct mat4x4 rotation_z(float r)
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{
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return mat4x4( cosf(r), -sinf(r), 0.0f, 0.0f,
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sinf(r), cosf(r), 0.0f, 0.0f,
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0.0f, 0.0f, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f);
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}
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inline static struct mat4x4 shearing(float xy,
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float xz,
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float yx,
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float yz,
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float zx,
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float zy)
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{
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return mat4x4(1.0f, xy, xz, 0.0f,
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yx, 1.0f, yz, 0.0f,
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zx, zy, 1.0f, 0.0f,
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0.0f, 0.0f, 0.0f, 1.0f);
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}
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