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51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
/* Quicktex Texture Compression Library
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Copyright (C) 2021-2022 Andrew Cassidy <drewcassidy@me.com>
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Partially derived from rgbcx.h written by Richard Geldreich <richgel99@gmail.com>
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and licenced under the public domain
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Matrix4x4.h"
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namespace quicktex {
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Matrix4x4 operator*(const Matrix4x4& lhs, const Matrix4x4& rhs) {
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Matrix4x4 trans_rhs = rhs.Transpose(); // 🏳️⚧️
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Matrix4x4 result;
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for (unsigned r = 0; r < 4; r++) {
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for (unsigned c = 0; c < 4; c++) { result[r][c] = lhs[r].Dot(trans_rhs[c]); }
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}
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return result;
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}
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Vector4 operator*(const Matrix4x4& lhs, const Vector4& rhs) {
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Vector4 result;
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for (unsigned r = 0; r < 4; r++) { result[r] = rhs.Dot(lhs[r]); }
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return result;
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}
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void Matrix4x4::Mirror() {
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for (unsigned r = 0; r < 3; r++) {
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for (unsigned c = (r + 1); c < 4; c++) {
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_r[c][r] = _r[r][c];
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}
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}
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}
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} // namespace quicktex
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