| // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "Plane.hpp" |
| |
| #include "Matrix.hpp" |
| |
| namespace sw { |
| |
| Plane::Plane() |
| { |
| } |
| |
| Plane::Plane(float p_A, float p_B, float p_C, float p_D) |
| { |
| A = p_A; |
| B = p_B; |
| C = p_C; |
| D = p_D; |
| } |
| |
| Plane::Plane(const float ABCD[4]) |
| { |
| A = ABCD[0]; |
| B = ABCD[1]; |
| C = ABCD[2]; |
| D = ABCD[3]; |
| } |
| |
| Plane operator*(const Plane &p, const Matrix &T) |
| { |
| Matrix M = !T; |
| |
| return Plane(p.A * M(1, 1) + p.B * M(1, 2) + p.C * M(1, 3) + p.D * M(1, 4), |
| p.A * M(2, 1) + p.B * M(2, 2) + p.C * M(2, 3) + p.D * M(2, 4), |
| p.A * M(3, 1) + p.B * M(3, 2) + p.C * M(3, 3) + p.D * M(3, 4), |
| p.A * M(4, 1) + p.B * M(4, 2) + p.C * M(4, 3) + p.D * M(4, 4)); |
| } |
| |
| Plane operator*(const Matrix &T, const Plane &p) |
| { |
| Matrix M = !T; |
| |
| return Plane(M(1, 1) * p.A + M(2, 1) * p.B + M(3, 1) * p.C + M(4, 1) * p.D, |
| M(1, 2) * p.A + M(2, 2) * p.B + M(3, 2) * p.C + M(4, 2) * p.D, |
| M(1, 3) * p.A + M(2, 3) * p.B + M(3, 3) * p.C + M(4, 3) * p.D, |
| M(1, 4) * p.A + M(2, 4) * p.B + M(3, 4) * p.C + M(4, 4) * p.D); |
| } |
| |
| } // namespace sw |