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| // 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);
| }
| }
|
|
