1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
#pragma once
#include "ibrush.h"
#include "math/Matrix3.h"
#include "math/Matrix4.h"
#include "Winding.h"
#include "TextureMatrix.h"
#include "selection/algorithm/Shader.h"
/**
* The TextureProjection type contains the TextureMatrix (the six
* components necessary to produce UV coords from winding vertices)
* next to a couple of projection algorithms.
*/
class TextureProjection final
{
private:
TextureMatrix _matrix;
public:
/**
* \brief
* Construct a default TextureProjection.
*
* The projection is initialised with the default texture scale from the
* registry.
*/
TextureProjection();
// Copy Constructor
TextureProjection(const TextureProjection& other);
// Construct using an existing texture matrix
TextureProjection(const TextureMatrix& otherMatrix);
TextureProjection& operator=(const TextureProjection& other);
void setTransform(const Matrix3& transform);
// Returns the Shift/Scale/Rotation values scaled to the given image dimensions
ShiftScaleRotation getShiftScaleRotation(std::size_t width, std::size_t height) const;
void setFromShiftScaleRotate(const ShiftScaleRotation& ssr, std::size_t width, std::size_t height);
Matrix3 getMatrix() const;
// s and t are texture coordinates, not pixels
void shift(double s, double t);
// Fits a texture to a brush face
void fitTexture(std::size_t width, std::size_t height, const Vector3& normal, const Winding& w, float s_repeat, float t_repeat);
// Aligns this texture to the given edge of the winding
void alignTexture(IFace::AlignEdge align, const Winding& winding);
// greebo: Saves the texture definitions into the brush winding points
void emitTextureCoordinates(Winding& winding, const Vector3& normal, const Matrix4& localToWorld) const;
// Calculates the UV coords of a single point
Vector2 getTextureCoordsForVertex(const Vector3& point, const Vector3& normal, const Matrix4& localToWorld) const;
// greebo: This returns a matrix transforming world vertex coordinates into texture space
Matrix4 getWorldToTexture(const Vector3& normal, const Matrix4& localToWorld) const;
// Calculate the texture projection for the desired set of UVs and XYZ
void calculateFromPoints(const Vector3 points[3], const Vector2 uvs[3], const Vector3& normal);
// Returns a texture projection using the default scale for the given texture dimensions
static TextureProjection ConstructDefault(std::size_t width, std::size_t height);
private:
static TextureMatrix Default();
Matrix4 getMatrix4() const;
void setTransformFromMatrix4(const Matrix4& transform);
// Normalise projection for a given texture width and height.
void normalise(float width, float height);
};
|
