56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
/*
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MIT License
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Copyright (c) 2024 - 2025 tobid7
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include <pd/core/mat.hpp>
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namespace PD {
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PD_CORE_API void Mat4::Zeros() {
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for (int i = 0; i < 16; i++) {
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m[i] = 0.0f;
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}
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}
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PD_CORE_API void Mat4::Ortho(float left, float right, float bottom, float top,
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float near, float far) {
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m[0] = 2.0f / (right - left);
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m[1] = 0.0f;
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m[2] = 0.0f;
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m[3] = -(right + left) / (right - left);
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m[4] = 0.0f;
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m[5] = 2.0f / (top - bottom);
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m[6] = 0.0f;
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m[7] = -(top + bottom) / (top - bottom);
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m[8] = 0.0f;
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m[9] = 0.0f;
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m[10] = -2.0f / (far - near);
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m[11] = -(far + near) / (far - near);
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m[12] = 0.0f;
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m[13] = 0.0f;
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m[14] = 0.0f;
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m[15] = 1.0f;
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}
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} // namespace PD
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