[546] | 1 | #include <QtGui> |
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| 2 | #include <QtOpenGL> |
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| 3 | |
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| 4 | #include <math.h> |
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| 5 | |
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| 6 | #include "glwidget.h" |
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| 7 | |
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| 8 | GLWidget::GLWidget(QWidget *parent) |
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| 9 | : QGLWidget(parent) |
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| 10 | { |
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[549] | 11 | printf("GLWidget::GLWidget \n"); |
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[546] | 12 | object = 0; |
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| 13 | xRot = 0; |
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| 14 | yRot = 0; |
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| 15 | zRot = 0; |
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| 16 | |
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| 17 | trolltechGreen = QColor::fromCmykF(0.40, 0.0, 1.0, 0.0); |
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| 18 | trolltechPurple = QColor::fromCmykF(0.39, 0.39, 0.0, 0.0); |
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[549] | 19 | printf("GLWidget::GLWidget END\n"); |
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[546] | 20 | } |
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| 21 | |
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| 22 | GLWidget::~GLWidget() |
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| 23 | { |
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[549] | 24 | printf("GLWidget::~GLWidget \n"); |
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[546] | 25 | makeCurrent(); |
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| 26 | glDeleteLists(object, 1); |
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[549] | 27 | printf("GLWidget::~GLWidget END\n"); |
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[546] | 28 | } |
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| 29 | |
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| 30 | QSize GLWidget::minimumSizeHint() const |
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| 31 | { |
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[549] | 32 | printf("GLWidget::minimumSizeHint \n"); |
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[546] | 33 | return QSize(50, 50); |
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| 34 | } |
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| 35 | |
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| 36 | QSize GLWidget::sizeHint() const |
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| 37 | { |
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[549] | 38 | printf("GLWidget::SizeHint \n"); |
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[546] | 39 | return QSize(400, 400); |
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| 40 | } |
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| 41 | |
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[548] | 42 | // void GLWidget::setXRotation(int angle) |
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| 43 | // { |
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| 44 | // normalizeAngle(&angle); |
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| 45 | // if (angle != xRot) { |
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| 46 | // xRot = angle; |
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| 47 | // emit xRotationChanged(angle); |
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| 48 | // updateGL(); |
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| 49 | // } |
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| 50 | // } |
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[546] | 51 | |
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[548] | 52 | // void GLWidget::setYRotation(int angle) |
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| 53 | // { |
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| 54 | // normalizeAngle(&angle); |
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| 55 | // if (angle != yRot) { |
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| 56 | // yRot = angle; |
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| 57 | // emit yRotationChanged(angle); |
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| 58 | // updateGL(); |
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| 59 | // } |
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| 60 | // } |
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[546] | 61 | |
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[548] | 62 | // void GLWidget::setZRotation(int angle) |
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| 63 | // { |
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| 64 | // normalizeAngle(&angle); |
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| 65 | // if (angle != zRot) { |
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| 66 | // zRot = angle; |
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| 67 | // emit zRotationChanged(angle); |
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| 68 | // updateGL(); |
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| 69 | // } |
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| 70 | // } |
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[546] | 71 | |
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| 72 | void GLWidget::initializeGL() |
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| 73 | { |
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[549] | 74 | printf("GLWidget::initializeGL \n"); |
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[546] | 75 | qglClearColor(trolltechPurple.dark()); |
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| 76 | object = makeObject(); |
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| 77 | glShadeModel(GL_FLAT); |
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| 78 | glEnable(GL_DEPTH_TEST); |
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| 79 | glEnable(GL_CULL_FACE); |
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[549] | 80 | printf("GLWidget::initializeGL END\n"); |
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[546] | 81 | } |
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| 82 | |
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| 83 | void GLWidget::paintGL() |
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| 84 | { |
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[549] | 85 | printf("GLWidget::paintGL\n"); |
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[546] | 86 | glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); |
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| 87 | glLoadIdentity(); |
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| 88 | glTranslated(0.0, 0.0, -10.0); |
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| 89 | glRotated(xRot / 16.0, 1.0, 0.0, 0.0); |
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| 90 | glRotated(yRot / 16.0, 0.0, 1.0, 0.0); |
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| 91 | glRotated(zRot / 16.0, 0.0, 0.0, 1.0); |
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| 92 | glCallList(object); |
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[549] | 93 | printf("GLWidget::paintGL END\n"); |
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[546] | 94 | } |
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| 95 | |
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| 96 | void GLWidget::resizeGL(int width, int height) |
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| 97 | { |
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[549] | 98 | printf("GLWidget::resizeGL\n"); |
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[546] | 99 | int side = qMin(width, height); |
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| 100 | glViewport((width - side) / 2, (height - side) / 2, side, side); |
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| 101 | |
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| 102 | glMatrixMode(GL_PROJECTION); |
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| 103 | glLoadIdentity(); |
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| 104 | glOrtho(-0.5, +0.5, +0.5, -0.5, 4.0, 15.0); |
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| 105 | glMatrixMode(GL_MODELVIEW); |
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[549] | 106 | printf("GLWidget::resizeGL END\n"); |
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[546] | 107 | } |
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| 108 | |
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[548] | 109 | // void GLWidget::mousePressEvent(QMouseEvent *event) |
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| 110 | // { |
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| 111 | // lastPos = event->pos(); |
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| 112 | // } |
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[546] | 113 | |
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[548] | 114 | // void GLWidget::mouseMoveEvent(QMouseEvent *event) |
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| 115 | // { |
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| 116 | // int dx = event->x() - lastPos.x(); |
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| 117 | // int dy = event->y() - lastPos.y(); |
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[546] | 118 | |
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[548] | 119 | // if (event->buttons() & Qt::LeftButton) { |
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| 120 | // setXRotation(xRot + 8 * dy); |
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| 121 | // setYRotation(yRot + 8 * dx); |
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| 122 | // } else if (event->buttons() & Qt::RightButton) { |
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| 123 | // setXRotation(xRot + 8 * dy); |
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| 124 | // setZRotation(zRot + 8 * dx); |
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| 125 | // } |
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| 126 | // lastPos = event->pos(); |
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| 127 | // } |
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[546] | 128 | |
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| 129 | GLuint GLWidget::makeObject() |
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| 130 | { |
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| 131 | GLuint list = glGenLists(1); |
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| 132 | glNewList(list, GL_COMPILE); |
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| 133 | |
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| 134 | glBegin(GL_QUADS); |
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| 135 | |
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| 136 | GLdouble x1 = +0.06; |
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| 137 | GLdouble y1 = -0.14; |
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| 138 | GLdouble x2 = +0.14; |
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| 139 | GLdouble y2 = -0.06; |
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| 140 | GLdouble x3 = +0.08; |
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| 141 | GLdouble y3 = +0.00; |
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| 142 | GLdouble x4 = +0.30; |
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| 143 | GLdouble y4 = +0.22; |
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| 144 | |
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| 145 | quad(x1, y1, x2, y2, y2, x2, y1, x1); |
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| 146 | quad(x3, y3, x4, y4, y4, x4, y3, x3); |
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| 147 | |
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| 148 | extrude(x1, y1, x2, y2); |
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| 149 | extrude(x2, y2, y2, x2); |
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| 150 | extrude(y2, x2, y1, x1); |
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| 151 | extrude(y1, x1, x1, y1); |
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| 152 | extrude(x3, y3, x4, y4); |
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| 153 | extrude(x4, y4, y4, x4); |
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| 154 | extrude(y4, x4, y3, x3); |
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| 155 | |
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| 156 | const double Pi = 3.14159265358979323846; |
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| 157 | const int NumSectors = 200; |
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| 158 | |
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| 159 | for (int i = 0; i < NumSectors; ++i) { |
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| 160 | double angle1 = (i * 2 * Pi) / NumSectors; |
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| 161 | GLdouble x5 = 0.30 * sin(angle1); |
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| 162 | GLdouble y5 = 0.30 * cos(angle1); |
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| 163 | GLdouble x6 = 0.20 * sin(angle1); |
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| 164 | GLdouble y6 = 0.20 * cos(angle1); |
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| 165 | |
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| 166 | double angle2 = ((i + 1) * 2 * Pi) / NumSectors; |
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| 167 | GLdouble x7 = 0.20 * sin(angle2); |
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| 168 | GLdouble y7 = 0.20 * cos(angle2); |
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| 169 | GLdouble x8 = 0.30 * sin(angle2); |
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| 170 | GLdouble y8 = 0.30 * cos(angle2); |
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| 171 | |
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| 172 | quad(x5, y5, x6, y6, x7, y7, x8, y8); |
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| 173 | |
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| 174 | extrude(x6, y6, x7, y7); |
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| 175 | extrude(x8, y8, x5, y5); |
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| 176 | } |
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| 177 | |
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| 178 | glEnd(); |
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| 179 | |
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| 180 | glEndList(); |
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| 181 | return list; |
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| 182 | } |
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| 183 | |
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| 184 | void GLWidget::quad(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2, |
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| 185 | GLdouble x3, GLdouble y3, GLdouble x4, GLdouble y4) |
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| 186 | { |
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| 187 | qglColor(trolltechGreen); |
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| 188 | |
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| 189 | glVertex3d(x1, y1, -0.05); |
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| 190 | glVertex3d(x2, y2, -0.05); |
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| 191 | glVertex3d(x3, y3, -0.05); |
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| 192 | glVertex3d(x4, y4, -0.05); |
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| 193 | |
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| 194 | glVertex3d(x4, y4, +0.05); |
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| 195 | glVertex3d(x3, y3, +0.05); |
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| 196 | glVertex3d(x2, y2, +0.05); |
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| 197 | glVertex3d(x1, y1, +0.05); |
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| 198 | } |
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| 199 | |
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| 200 | void GLWidget::extrude(GLdouble x1, GLdouble y1, GLdouble x2, GLdouble y2) |
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| 201 | { |
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| 202 | qglColor(trolltechGreen.dark(250 + int(100 * x1))); |
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| 203 | |
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| 204 | glVertex3d(x1, y1, +0.05); |
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| 205 | glVertex3d(x2, y2, +0.05); |
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| 206 | glVertex3d(x2, y2, -0.05); |
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| 207 | glVertex3d(x1, y1, -0.05); |
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| 208 | } |
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| 209 | |
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| 210 | void GLWidget::normalizeAngle(int *angle) |
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| 211 | { |
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| 212 | while (*angle < 0) |
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| 213 | *angle += 360 * 16; |
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| 214 | while (*angle > 360 * 16) |
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| 215 | *angle -= 360 * 16; |
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| 216 | } |
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