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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
#include "mmscene.h"
#include "glpoint.h"
#include "glcolorrgba.h"
MMScene::MMScene(QQuickItem *parent)
:GLItem(parent)
{
m_vertexShaderFilename = ":/shaders/vshader.vsh";
m_eye = 20.0 * v_XYZ;
}
MMScene::~MMScene()
{
}
void MMScene::paintUnderQmlScene()
{
m_renderer->pushMvMatrix();
// drawAxes(2.5);
drawTriangles();
m_renderer->popMvMatrix();
}
void MMScene::paintOnTopOfQmlScene()
{
m_renderer->pushMvMatrix();
drawAxes(10);
drawTriangles();
m_renderer->popMvMatrix();
}
void MMScene::setupGeometry()
{
drawF(5.0);
m_colorArrayEnabled = true;
m_geometryIsValid = true;
}
void MMScene::drawTriangles()
{
renderer()->setLightingEnabled(m_lightingEnabled);
renderer()->setColorArrayEnabled(m_colorArrayEnabled);
renderer()->setTextureEnabled(false);
//enable required arrays
int stride = sizeof(GLPoint);
renderer()->activateAttributeArray(GLESRenderer::VERTEX_LOCATION,
m_points[0].vertexPointer(), stride);
renderer()->activateAttributeArray(GLESRenderer::NORMAL_LOCATION,
m_points[0].normalPointer(), stride);
renderer()->activateAttributeArray(GLESRenderer::TEXCOORD_LOCATION,
m_points[0].texCoordPointer(), stride);
renderer()->activateAttributeArray(GLESRenderer::COLOR_LOCATION,
m_points[0].colorPointer(), stride);
glDrawArrays(GL_TRIANGLES, 0, 36);
renderer()->disableAttributeArrays();
}
void MMScene::createCube(const QVector3D &lbb, const QVector3D &rtf)
{
QVector3D n0 = QVector3D(0.0, 0.0, 1.0); //dummy normal
QVector3D t0 = QVector3D(0.0, 0.0, 0.0); //dummy texture
// Create all the vectors for caching
QVector3D lbf = QVector3D(lbb.x(), lbb.y(), rtf.z());
QVector3D rbb = QVector3D(rtf.x(), lbb.y(), lbb.z());
QVector3D rbf = QVector3D(rtf.x(), lbb.y(), rtf.z());
QVector3D ltb = QVector3D(lbb.x(), rtf.y(), lbb.z());
QVector3D ltf = QVector3D(lbb.x(), rtf.y(), rtf.z());
QVector3D rtb = QVector3D(rtf.x(), rtf.y(), lbb.z());
// Bottom plane
m_points.append(GLPoint(lbb, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(lbf, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(rbb, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(rbf, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(lbf, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(rbb, n0, t0, GLColorRgba::clRed));
// Back plane
m_points.append(GLPoint(lbb, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(rbb, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(ltb, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(rtb, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(rbb, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(ltb, n0, t0, GLColorRgba::clGreen));
// Left plane
m_points.append(GLPoint(lbb, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(lbf, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(ltb, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(ltf, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(lbf, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(ltb, n0, t0, GLColorRgba::clBlue));
// Right plane
m_points.append(GLPoint(rbb, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(rbf, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(rtb, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(rtf, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(rbf, n0, t0, GLColorRgba::clBlue));
m_points.append(GLPoint(rtb, n0, t0, GLColorRgba::clBlue));
// Top plane
m_points.append(GLPoint(ltb, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(ltf, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(rtb, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(rtf, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(ltf, n0, t0, GLColorRgba::clRed));
m_points.append(GLPoint(rtb, n0, t0, GLColorRgba::clRed));
// Front plane
m_points.append(GLPoint(lbf, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(rbf, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(ltf, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(rtf, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(rbf, n0, t0, GLColorRgba::clGreen));
m_points.append(GLPoint(ltf, n0, t0, GLColorRgba::clGreen));
}
void MMScene::createF(double height)
{
float stdLength = height / 5.0;
createCube(QVector3D(0.0, 0.0, 0.0), QVector3D(stdLength, height, stdLength));
createCube(QVector3D(stdLength, height, 0.0), QVector3D(3.0 * stdLength,
height - 1.0 * stdLength, stdLength));
createCube(QVector3D(stdLength, height - 2.0 * stdLength, 0.0),
QVector3D(2.0 * stdLength, height - 3.0 * stdLength, stdLength));
}
void MMScene::drawF(double height)
{
m_renderer->pushMvMatrix(); // Pretransform for height
m_renderer->scale(QVector3D(height / 5.0,height / 5.0,height / 5.0));
m_renderer->pushMvMatrix();
m_renderer->scale(QVector3D(1.0, 5.0, 1.0));
drawTriangles();
m_renderer->popMvMatrix();
m_renderer->pushMvMatrix();
m_renderer->translate(QVector3D(1.0, 4.0, 0.0));
m_renderer->scale(QVector3D(2.0, 1.0, 1.0));
drawTriangles();
m_renderer->popMvMatrix();
m_renderer->pushMvMatrix();
m_renderer->translate(QVector3D(1.0, 2.0, 0.0));
drawTriangles();
m_renderer->popMvMatrix();
m_renderer->popMvMatrix(); // Reset height transformation
}
|
