forked from JamesMcCrae/flatfab
-
Notifications
You must be signed in to change notification settings - Fork 0
/
glutils.h
118 lines (93 loc) · 7.01 KB
/
glutils.h
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
#ifndef GLUTILS_H
#define GLUTILS_H
#include <QtOpenGL>
#include <QtGui>
#include <cfloat>
#ifdef __APPLE__
#include <OpenGL/glu.h>
#else
#include <GL/glu.h>
#endif
//#include "algebra3.h"
//#include "tnbframe.h"
class GLutils
{
public:
GLutils();
//drawing related
static void DrawPointGL(const float x, const float y, const float rad);
//static void DrawTNBFrame(const vec3 & o, const TNBFrame & tnb, const float scale);
static void DrawArrow(const QVector3D & p1, const QVector3D & p2);
static void DrawArrowFixedLength(const QVector3D & p1, const QVector3D & p2, const float len);
static void DrawCylinder(const QVector3D & p1, const QVector3D & p2, const float radius);
static void DrawCylinderFixedLength(const QVector3D & p1, const QVector3D & p2, const float radius, const float len);
static void DrawRing(const QVector3D & p1, const QVector3D & p2, const float inner_rad, const float outer_rad);
static void DrawSphere(const QVector3D & p, const float radius);
//drawing (setting colour)
static void SetColorByHue(const float val, const float range);
static QVector3D GetColorByHue(const float val, const float range);
static void ColorByIndex(const int ind);
static QString ColorByIndexStr(const int ind);
static void ColorByNearestMajorAxis(const QVector3D & v);
//drawing (blending)
static void EnableBlending();
static void DisableBlending();
//projection related
static QVector3D ProjectPoint(const QVector3D & p);
static void UnProjectPoint(const QVector2D & v, const float depth_value, QVector3D & unproj_pt);
static void ReadPixelColor_FrontBuffer(const int x, const int y, unsigned char & r, unsigned char & g, unsigned char & b);
static void ReadPixelColor_BackBuffer(const int x, const int y, unsigned char & r, unsigned char & g, unsigned char & b);
static void PixelColorToIndex(const unsigned char r, const unsigned char g, const unsigned char b, int & index);
static void IndexToPixelColor(const int index, unsigned char & r, unsigned char & g, unsigned char & b);
static void SetPickColor(const int index);
static int GetWindowWidth();
static int GetWindowHeight();
static void GetViewport(int v[4]);
static void SetViewport(const int v[4]);
static void SetViewport(const int x, const int y, const int w, const int h);
//vector and geometry useful methods
static QVector3D RotateVector(const QVector3D & v, const QVector3D & axis, const float angle_radians);
static QVector3D MirrorVector(const QVector3D & v, const QVector3D & mirror_dir);
static void GetBoundingBox(const QVector <QVector3D> & vs, QVector3D & bbox_min, QVector3D & bbox_max);
static float AngleBetweenDeg(const QVector3D & v1, const QVector3D & v2);
static float AngleBetweenRad(const QVector3D & v1, const QVector3D & v2);
static float SignedAngleBetweenRad(const QVector3D & v1, const QVector3D & v2, const QVector3D & axis);
static bool LineLineIntersection(const QVector2D & p1, const QVector2D & p2, const QVector2D & p3, const QVector2D & p4, QVector2D & intersect);
static bool LineRayIntersection(const QVector2D & p1, const QVector2D & p2, const QVector2D & lp, const QVector2D & ld, QVector2D & intersect);
static bool LineBoxIntersection(const QVector2D & p1, const QVector2D & p2, const QVector2D & lp, const QVector2D & ld);
static bool LinePlaneIntersection(const QVector3D & p0, const QVector3D & n, const QVector3D & l0, const QVector3D & l1, QVector3D & intersect);
static bool LineSegmentPlaneIntersection(const QVector3D & p0, const QVector3D & n, const QVector3D & l0, const QVector3D & l1, QVector3D & intersect);
static float PointLineSignedDistance(const QVector2D & l1, const QVector2D & l2, const QVector2D & p);
static float PointLineSegmentDistance(const QVector3D & p0, const QVector3D & p1, const QVector3D & p2);
static float PointLineSegmentDistance(const QVector3D & p0, const QVector3D & p1, const QVector3D & p2, QVector3D & best_pt);
static bool PlanePlaneIntersection(const QVector3D & n1, const QVector3D & p1, const QVector3D & n2, const QVector3D & p2, QVector3D & lp, QVector3D & ld);
static void ConvexHull_GiftWrapping(const QList <QVector3D> & pts, QList <int> & hull);
static bool ConvexHull_PointInside(const QList <QVector3D> & hull, const QVector3D & p);
static int GetClosestPoint(const QList <QVector3D> & pts, const QVector3D & p);
static void GetClosestPairOfPoints(const QList <QVector3D> & pts1, const QList <QVector3D> & pts2, int & ind1, int & ind2);
static QVector3D GetVectorNewBasis(const QVector3D & old_x, const QVector3D & old_y, const QVector3D & old_z, const QVector3D & old_p,
const QVector3D & new_x, const QVector3D & new_y, const QVector3D & new_z, const QVector3D & new_p,
const QVector3D & p, const float scale_x, const float scale_y, const float scale_z);
static void SortPointsAlongDirection2D(const QVector2D & dir, QList <QVector2D> & isecs);
static void SortPointsAlongDirection3D(const QVector3D & dir, QList <QVector3D> & pts);
static void SortPointsAlongDirection3DExtra(const QVector3D dir, QList <QVector3D> & isecs, QList <bool> & isecs_which);
static void GetSortedIntersectionPoints(const QList <QVector2D> & pts, const QVector2D ray_dir, const QVector2D ray_p, QList <QVector2D> & sorted_isecs);
static QVector3D GetOrthoVec(const QVector3D & v);
static void GetModelviewMatrixFromVec(const QVector3D & z, const QVector3D & p, float modelview[16]);
static void DrawDisc(const QVector3D & p1, const QVector3D & p2, const float inner_rad, const float outer_rad);
static void DrawArc(float cx, float cy, float cz, float innerR, float outerR, float start_angle, float arc_angle, int num_segments);
static void DrawSemiRing(const QVector3D & p1, const QVector3D & p2, float start_angle, float arc_angle, const float inner_rad, const float outer_rad, int segNumber);
static void DrawArcLineStrip(float cx, float cy, float cz, float radius, float start_angle, float arc_angle, int num_segments, const float thickness);
static void DrawArcLineStrip(QVector3D c, QVector3D dir, QVector3D axis, float arc_angle, int num_segments, float thickness, bool dashed = false);
static void DrawSemiRingLineStrip(const QVector3D & p1, const QVector3D & p2, float start_angle, float arc_angle, const float radius, const float thickness, int segNumber);
static void CurvesFromLineSegments(QList <QVector2D> & segments, QList <QList <QVector2D> > & curves);
static int GetClosestPoint(const QList <QVector2D> & pts, const QVector2D & p);
inline static void glColor(QVector3D c) { glColor3f(c.x(), c.y(), c.z()); }
inline static void glColor(QVector4D c) { glColor4f(c.x(), c.y(), c.z(), c.w()); }
private:
static void ReadPixelColor(const int x, const int y, unsigned char & r, unsigned char & g, unsigned char & b);
static int point_disp_list;
static int draw_slices;
static GLUquadric *quadric;
};
#endif // GLUTILS_H