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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef DEVICE_VR_VR_MATH_H_ |
| 6 #define DEVICE_VR_VR_MATH_H_ |
| 7 |
| 8 #include "device/vr/vr_export.h" |
| 9 #include "device/vr/vr_types.h" |
| 10 |
| 11 namespace vr { |
| 12 |
| 13 void DEVICE_VR_EXPORT SetIdentityM(Mat4f* mat); |
| 14 void DEVICE_VR_EXPORT TranslateM(const Mat4f& mat, |
| 15 const gfx::Vector3dF& translation, |
| 16 Mat4f* out); |
| 17 void DEVICE_VR_EXPORT ScaleM(const Mat4f& mat, |
| 18 const gfx::Vector3dF& scale, |
| 19 Mat4f* out); |
| 20 |
| 21 gfx::Vector3dF DEVICE_VR_EXPORT MatrixVectorMul(const Mat4f& m, |
| 22 const gfx::Vector3dF& v); |
| 23 gfx::Vector3dF DEVICE_VR_EXPORT MatrixVectorRotate(const Mat4f& m, |
| 24 const gfx::Vector3dF& v); |
| 25 void DEVICE_VR_EXPORT MatrixMul(const Mat4f& matrix1, |
| 26 const Mat4f& matrix2, |
| 27 Mat4f* out); |
| 28 void DEVICE_VR_EXPORT PerspectiveMatrixFromView(const gfx::RectF& fov, |
| 29 float z_near, |
| 30 float z_far, |
| 31 Mat4f* out); |
| 32 |
| 33 // Provides the direction the head is looking towards as a 3x1 unit vector. |
| 34 gfx::Vector3dF DEVICE_VR_EXPORT GetForwardVector(const Mat4f& matrix); |
| 35 |
| 36 gfx::Vector3dF DEVICE_VR_EXPORT GetTranslation(const Mat4f& matrix); |
| 37 |
| 38 void DEVICE_VR_EXPORT QuatToMatrix(const Quatf& quat, Mat4f* out); |
| 39 |
| 40 // Normalize a vector, and return its original length. |
| 41 float DEVICE_VR_EXPORT NormalizeVector(gfx::Vector3dF* vec); |
| 42 |
| 43 void DEVICE_VR_EXPORT NormalizeQuat(Quatf* quat); |
| 44 |
| 45 Quatf DEVICE_VR_EXPORT QuatFromAxisAngle(const RotationAxisAngle& axis_angle); |
| 46 |
| 47 gfx::Point3F DEVICE_VR_EXPORT GetRayPoint(const gfx::Point3F& rayOrigin, |
| 48 const gfx::Vector3dF& rayVector, |
| 49 float scale); |
| 50 |
| 51 // Angle between the vectors' projections to the XZ plane. |
| 52 bool DEVICE_VR_EXPORT XZAngle(const gfx::Vector3dF& vec1, |
| 53 const gfx::Vector3dF& vec2, |
| 54 float* angle); |
| 55 |
| 56 } // namespace vr |
| 57 |
| 58 #endif // DEVICE_VR_VR_MATH_H_ |
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