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homogeneous.h
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1//
2// Copyright 2016 Pixar
3//
4// Licensed under the Apache License, Version 2.0 (the "Apache License")
5// with the following modification; you may not use this file except in
6// compliance with the Apache License and the following modification to it:
7// Section 6. Trademarks. is deleted and replaced with:
8//
9// 6. Trademarks. This License does not grant permission to use the trade
10// names, trademarks, service marks, or product names of the Licensor
11// and its affiliates, except as required to comply with Section 4(c) of
12// the License and to reproduce the content of the NOTICE file.
13//
14// You may obtain a copy of the Apache License at
15//
16// http://www.apache.org/licenses/LICENSE-2.0
17//
18// Unless required by applicable law or agreed to in writing, software
19// distributed under the Apache License with the above modification is
20// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
21// KIND, either express or implied. See the Apache License for the specific
22// language governing permissions and limitations under the Apache License.
23//
24#ifndef PXR_BASE_GF_HOMOGENEOUS_H
25#define PXR_BASE_GF_HOMOGENEOUS_H
26
30
31#include "pxr/pxr.h"
32#include "pxr/base/gf/vec3d.h"
33#include "pxr/base/gf/vec3f.h"
34#include "pxr/base/gf/vec4d.h"
35#include "pxr/base/gf/vec4f.h"
36#include "pxr/base/gf/api.h"
37
38PXR_NAMESPACE_OPEN_SCOPE
39
43GF_API
45
50GF_API
52
53GF_API
55
60GF_API
62
65inline GfVec3f GfProject(const GfVec4f &v) {
66 float inv = (v[3] != 0.0f) ? 1.0f/v[3] : 1.0f;
67 return GfVec3f(inv * v[0], inv * v[1], inv * v[2]);
68}
69
72inline GfVec3d GfProject(const GfVec4d &v) {
73 double inv = (v[3] != 0.0) ? 1.0/v[3] : 1.0;
74 return GfVec3d(inv * v[0], inv * v[1], inv * v[2]);
75}
76
77PXR_NAMESPACE_CLOSE_SCOPE
78
79#endif /* PXR_BASE_GF_HOMOGENEOUS_H */
Basic type for a vector of 3 double components.
Definition: vec3d.h:63
Basic type for a vector of 3 float components.
Definition: vec3f.h:63
Basic type for a vector of 4 double components.
Definition: vec4d.h:63
Basic type for a vector of 4 float components.
Definition: vec4f.h:63
GF_API GfVec4f GfGetHomogenized(const GfVec4f &v)
Returns a vector which is v homogenized.
GF_API GfVec4f GfHomogeneousCross(const GfVec4f &a, const GfVec4f &b)
Homogenizes a and b and then performs the cross product on the first three elements of each.
GfVec3f GfProject(const GfVec4f &v)
Projects homogeneous v into Euclidean space and returns the result as a Vec3f.
Definition: homogeneous.h:65