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1 /****************************************************************************
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2 **
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3 ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
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4 ** Contact: Qt Software Information (qt-info@nokia.com)
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5 **
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6 ** This file is part of the example classes of the Qt Toolkit.
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7 **
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8 ** Commercial Usage
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9 ** Licensees holding valid Qt Commercial licenses may use this file in
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10 ** accordance with the Qt Commercial License Agreement provided with the
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11 ** Software or, alternatively, in accordance with the terms contained in
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12 ** a written agreement between you and Nokia.
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13 **
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14 **
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15 ** GNU General Public License Usage
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16 ** Alternatively, this file may be used under the terms of the GNU
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17 ** General Public License versions 2.0 or 3.0 as published by the Free
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18 ** Software Foundation and appearing in the file LICENSE.GPL included in
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19 ** the packaging of this file. Please review the following information
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20 ** to ensure GNU General Public Licensing requirements will be met:
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21 ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
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22 ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
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23 ** exception, Nokia gives you certain additional rights. These rights
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24 ** are described in the Nokia Qt GPL Exception version 1.3, included in
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25 ** the file GPL_EXCEPTION.txt in this package.
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26 **
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27 ** Qt for Windows(R) Licensees
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28 ** As a special exception, Nokia, as the sole copyright holder for Qt
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29 ** Designer, grants users of the Qt/Eclipse Integration plug-in the
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30 ** right for the Qt/Eclipse Integration to link to functionality
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31 ** provided by Qt Designer and its related libraries.
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32 **
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33 ** If you are unsure which license is appropriate for your use, please
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34 ** contact the sales department at qt-sales@nokia.com.
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35 **
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36 ****************************************************************************/
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37
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38
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39 import tango.math.Math;
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40
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41 import qt.core.QPoint;
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42 import qt.gui.QMouseEvent;
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43 import qt.opengl.QGLWidget;
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44 import qt.gui.QColor;
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45 import qt.core.QSize;
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46
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47 import qt.opengl.gl;
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48 import qt.opengl.glu;
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49
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50 class GLWidget : QGLWidget
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51 {
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52 // Q_OBJECT
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53
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54 public:
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55 this(QWidget parent = null)
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56 {
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57 super(parent);
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58 object = 0;
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59 xRot = 0;
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60 yRot = 0;
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61 zRot = 0;
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62
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63 trolltechGreen = QColor.fromCmykF(0.40, 0.0, 1.0, 0.0);
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64 trolltechPurple = QColor.fromCmykF(0.39, 0.39, 0.0, 0.0);
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65 }
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66
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67 ~this()
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68 {
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69 makeCurrent();
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70 glDeleteLists(object, 1);
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71 }
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72
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73 QSize minimumSizeHint()
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74 {
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75 return QSize(50, 50);
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76 }
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77
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78 QSize sizeHint()
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79 {
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80 return QSize(400, 400);
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81 }
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82
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83
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84 public: // slots:
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85 void setXRotation(int angle)
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86 {
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87 normalizeAngle(&angle);
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88 if (angle != xRot) {
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89 xRot = angle;
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90 xRotationChanged.emit(angle);
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91 updateGL();
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92 }
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93 }
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94
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95 void setYRotation(int angle)
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96 {
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97 normalizeAngle(&angle);
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98 if (angle != yRot) {
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99 yRot = angle;
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100 yRotationChanged.emit(angle);
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101 updateGL();
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102 }
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103 }
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104
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105 void setZRotation(int angle)
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106 {
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107 normalizeAngle(&angle);
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108 if (angle != zRot) {
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109 zRot = angle;
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110 zRotationChanged.emit(angle);
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111 updateGL();
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112 }
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113 }
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114
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115 mixin Signal!("xRotationChanged", int);
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116 mixin Signal!("yRotationChanged", int);
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117 mixin Signal!("zRotationChanged", int);
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118
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119
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120 protected:
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121 void initializeGL()
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122 {
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123 qglClearColor(trolltechPurple.darker());
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124 object = makeObject();
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125 glShadeModel(GL_FLAT);
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126 glEnable(GL_DEPTH_TEST);
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127 glEnable(GL_CULL_FACE);
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128 }
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129
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130 void paintGL()
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131 {
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132 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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133 glLoadIdentity();
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134 glTranslated(0.0, 0.0, -10.0);
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135 glRotated(xRot / 16.0, 1.0, 0.0, 0.0);
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136 glRotated(yRot / 16.0, 0.0, 1.0, 0.0);
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137 glRotated(zRot / 16.0, 0.0, 0.0, 1.0);
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138 glCallList(object);
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139 }
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140
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141 void resizeGL(int width, int height)
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142 {
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143 int side = qMin(width, height);
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144 glViewport((width - side) / 2, (height - side) / 2, side, side);
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145
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146 glMatrixMode(GL_PROJECTION);
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147 glLoadIdentity();
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148 glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0);
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149 glMatrixMode(GL_MODELVIEW);
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150 }
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151
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152 void mousePressEvent(QMouseEvent event)
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153 {
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154 lastPos = QPoint(event.pos.x, event.pos.y);
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155 }
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156
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157 void mouseMoveEvent(QMouseEvent event)
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158 {
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159 int dx = event.x - lastPos.x;
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160 int dy = event.y - lastPos.y;
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161
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162 if (event.buttons() & Qt.LeftButton) {
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163 setXRotation(xRot + 8 * dy);
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164 setYRotation(yRot + 8 * dx);
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165 } else if (event.buttons() & Qt.RightButton) {
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166 setXRotation(xRot + 8 * dy);
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167 setZRotation(zRot + 8 * dx);
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168 }
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169 lastPos = QPoint(event.pos.x, event.pos.y);
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170 }
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171 private:
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172 GLuint makeObject()
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173 {
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174 GLuint list = glGenLists(1);
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175 glNewList(list, GL_COMPILE);
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176
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177 glBegin(GL_QUADS);
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178
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179 GLdouble x1 = +0.06;
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180 GLdouble y1 = -0.14;
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181 GLdouble x2 = +0.14;
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182 GLdouble y2 = -0.06;
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183 GLdouble x3 = +0.08;
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184 GLdouble y3 = +0.00;
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185 GLdouble x4 = +0.30;
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186 GLdouble y4 = +0.22;
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187
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188 quad(x1, y1, x2, y2, y2, x2, y1, x1);
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189 quad(x3, y3, x4, y4, y4, x4, y3, x3);
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190
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191 extrude(x1, y1, x2, y2);
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192 extrude(x2, y2, y2, x2);
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193 extrude(y2, x2, y1, x1);
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194 extrude(y1, x1, x1, y1);
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195 extrude(x3, y3, x4, y4);
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196 extrude(x4, y4, y4, x4);
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197 extrude(y4, x4, y3, x3);
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198
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199 const double Pi = 3.14159265358979323846;
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200 const int NumSectors = 200;
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201
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202 for (int i = 0; i < NumSectors; ++i) {
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203 double angle1 = (i * 2 * Pi) / NumSectors;
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204 GLdouble x5 = 0.30 * sin(angle1);
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205 GLdouble y5 = 0.30 * cos(angle1);
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206 GLdouble x6 = 0.20 * sin(angle1);
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207 GLdouble y6 = 0.20 * cos(angle1);
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208
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209 double angle2 = ((i + 1) * 2 * Pi) / NumSectors;
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210 GLdouble x7 = 0.20 * sin(angle2);
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211 GLdouble y7 = 0.20 * cos(angle2);
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212 GLdouble x8 = 0.30 * sin(angle2);
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213 GLdouble y8 = 0.30 * cos(angle2);
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214
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215 quad(x5, y5, x6, y6, x7, y7, x8, y8);
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216
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217 extrude(x6, y6, x7, y7);
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218 extrude(x8, y8, x5, y5);
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219 }
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220
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221 glEnd();
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222
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223 glEndList();
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224 return list;
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225 }
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226
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227 void quad(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2,
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228 GLdouble x3, GLdouble y3, GLdouble x4, GLdouble y4)
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229 {
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230 qglColor(trolltechGreen);
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231
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232 glVertex3d(x1, y1, -0.05);
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233 glVertex3d(x2, y2, -0.05);
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234 glVertex3d(x3, y3, -0.05);
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235 glVertex3d(x4, y4, -0.05);
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236
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237 glVertex3d(x4, y4, +0.05);
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238 glVertex3d(x3, y3, +0.05);
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239 glVertex3d(x2, y2, +0.05);
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240 glVertex3d(x1, y1, +0.05);
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241 }
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242
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243 void extrude(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2)
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244 {
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245 qglColor(trolltechGreen.darker(rndint(250 + (100 * x1))));
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246
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247 glVertex3d(x1, y1, +0.05);
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248 glVertex3d(x2, y2, +0.05);
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249 glVertex3d(x2, y2, -0.05);
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250 glVertex3d(x1, y1, -0.05);
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251 }
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252
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253 void normalizeAngle(int *angle)
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254 {
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255 while (*angle < 0)
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256 *angle += 360 * 16;
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257 while (*angle > 360 * 16)
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258 *angle -= 360 * 16;
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259 }
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260
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261 GLuint object;
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262 int xRot;
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263 int yRot;
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264 int zRot;
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265 QPoint lastPos;
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266 QColor trolltechGreen;
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267 QColor trolltechPurple;
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268 } |
