1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "Plane.hpp" 16 17 #include "Matrix.hpp" 18 19 namespace sw 20 { 21 Plane::Plane() 22 { 23 } 24 25 Plane::Plane(float p_A, float p_B, float p_C, float p_D) 26 { 27 A = p_A; 28 B = p_B; 29 C = p_C; 30 D = p_D; 31 } 32 33 Plane::Plane(const float ABCD[4]) 34 { 35 A = ABCD[0]; 36 B = ABCD[1]; 37 C = ABCD[2]; 38 D = ABCD[3]; 39 } 40 41 Plane operator*(const Plane &p, const Matrix &T) 42 { 43 Matrix M = !T; 44 45 return Plane(p.A * M(1, 1) + p.B * M(1, 2) + p.C * M(1, 3) + p.D * M(1, 4), 46 p.A * M(2, 1) + p.B * M(2, 2) + p.C * M(2, 3) + p.D * M(2, 4), 47 p.A * M(3, 1) + p.B * M(3, 2) + p.C * M(3, 3) + p.D * M(3, 4), 48 p.A * M(4, 1) + p.B * M(4, 2) + p.C * M(4, 3) + p.D * M(4, 4)); 49 } 50 51 Plane operator*(const Matrix &T, const Plane &p) 52 { 53 Matrix M = !T; 54 55 return Plane(M(1, 1) * p.A + M(2, 1) * p.B + M(3, 1) * p.C + M(4, 1) * p.D, 56 M(1, 2) * p.A + M(2, 2) * p.B + M(3, 2) * p.C + M(4, 2) * p.D, 57 M(1, 3) * p.A + M(2, 3) * p.B + M(3, 3) * p.C + M(4, 3) * p.D, 58 M(1, 4) * p.A + M(2, 4) * p.B + M(3, 4) * p.C + M(4, 4) * p.D); 59 } 60 } 61
