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Diffstat (limited to 'examples/opengl/legacy/grabber/glwidget.cpp')
-rw-r--r-- | examples/opengl/legacy/grabber/glwidget.cpp | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/examples/opengl/legacy/grabber/glwidget.cpp b/examples/opengl/legacy/grabber/glwidget.cpp deleted file mode 100644 index 6be4d30597..0000000000 --- a/examples/opengl/legacy/grabber/glwidget.cpp +++ /dev/null @@ -1,286 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "glwidget.h" - -#include <QMouseEvent> -#include <QTimer> -#include <qmath.h> - -GLWidget::GLWidget(QWidget *parent) - : QGLWidget(parent) -{ - gear1 = 0; - gear2 = 0; - gear3 = 0; - xRot = 0; - yRot = 0; - zRot = 0; - gear1Rot = 0; - - QTimer *timer = new QTimer(this); - connect(timer, SIGNAL(timeout()), this, SLOT(advanceGears())); - timer->start(20); -} - -GLWidget::~GLWidget() -{ - makeCurrent(); - glDeleteLists(gear1, 1); - glDeleteLists(gear2, 1); - glDeleteLists(gear3, 1); -} - -void GLWidget::setXRotation(int angle) -{ - normalizeAngle(&angle); - if (angle != xRot) { - xRot = angle; - emit xRotationChanged(angle); - updateGL(); - } -} - -void GLWidget::setYRotation(int angle) -{ - normalizeAngle(&angle); - if (angle != yRot) { - yRot = angle; - emit yRotationChanged(angle); - updateGL(); - } -} - -void GLWidget::setZRotation(int angle) -{ - normalizeAngle(&angle); - if (angle != zRot) { - zRot = angle; - emit zRotationChanged(angle); - updateGL(); - } -} - -void GLWidget::initializeGL() -{ - static const GLfloat lightPos[4] = { 5.0f, 5.0f, 10.0f, 1.0f }; - static const GLfloat reflectance1[4] = { 0.8f, 0.1f, 0.0f, 1.0f }; - static const GLfloat reflectance2[4] = { 0.0f, 0.8f, 0.2f, 1.0f }; - static const GLfloat reflectance3[4] = { 0.2f, 0.2f, 1.0f, 1.0f }; - - glLightfv(GL_LIGHT0, GL_POSITION, lightPos); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - glEnable(GL_DEPTH_TEST); - - gear1 = makeGear(reflectance1, 1.0, 4.0, 1.0, 0.7, 20); - gear2 = makeGear(reflectance2, 0.5, 2.0, 2.0, 0.7, 10); - gear3 = makeGear(reflectance3, 1.3, 2.0, 0.5, 0.7, 10); - - glEnable(GL_NORMALIZE); - glClearColor(0.0f, 0.0f, 0.0f, 1.0f); -} - -void GLWidget::paintGL() -{ - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glPushMatrix(); - glRotated(xRot / 16.0, 1.0, 0.0, 0.0); - glRotated(yRot / 16.0, 0.0, 1.0, 0.0); - glRotated(zRot / 16.0, 0.0, 0.0, 1.0); - - drawGear(gear1, -3.0, -2.0, 0.0, gear1Rot / 16.0); - drawGear(gear2, +3.1, -2.0, 0.0, -2.0 * (gear1Rot / 16.0) - 9.0); - - glRotated(+90.0, 1.0, 0.0, 0.0); - drawGear(gear3, -3.1, -1.8, -2.2, +2.0 * (gear1Rot / 16.0) - 2.0); - - glPopMatrix(); -} - -void GLWidget::resizeGL(int width, int height) -{ - int side = qMin(width, height); - glViewport((width - side) / 2, (height - side) / 2, side, side); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glFrustum(-1.0, +1.0, -1.0, 1.0, 5.0, 60.0); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - glTranslated(0.0, 0.0, -40.0); -} - -void GLWidget::mousePressEvent(QMouseEvent *event) -{ - lastPos = event->pos(); -} - -void GLWidget::mouseMoveEvent(QMouseEvent *event) -{ - int dx = event->x() - lastPos.x(); - int dy = event->y() - lastPos.y(); - - if (event->buttons() & Qt::LeftButton) { - setXRotation(xRot + 8 * dy); - setYRotation(yRot + 8 * dx); - } else if (event->buttons() & Qt::RightButton) { - setXRotation(xRot + 8 * dy); - setZRotation(zRot + 8 * dx); - } - lastPos = event->pos(); -} - -void GLWidget::advanceGears() -{ - gear1Rot += 2 * 16; - updateGL(); -} - -GLuint GLWidget::makeGear(const GLfloat *reflectance, GLdouble innerRadius, - GLdouble outerRadius, GLdouble thickness, - GLdouble toothSize, GLint toothCount) -{ - GLuint list = glGenLists(1); - glNewList(list, GL_COMPILE); - glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, reflectance); - - GLdouble r0 = innerRadius; - GLdouble r1 = outerRadius - toothSize / 2.0; - GLdouble r2 = outerRadius + toothSize / 2.0; - GLdouble toothAngle = 2 * M_PI / toothCount; - GLdouble delta = toothAngle / 4.0; - GLdouble z = thickness / 2.0; - - glShadeModel(GL_FLAT); - - for (int i = 0; i < 2; ++i) { - GLdouble sign = (i == 0) ? +1.0 : -1.0; - - glNormal3d(0.0, 0.0, sign); - - glBegin(GL_QUAD_STRIP); - for (int j = 0; j <= toothCount; ++j) { - GLdouble angle = j * toothAngle; - glVertex3d(r0 * cos(angle), r0 * sin(angle), sign * z); - glVertex3d(r1 * cos(angle), r1 * sin(angle), sign * z); - glVertex3d(r0 * cos(angle), r0 * sin(angle), sign * z); - glVertex3d(r1 * cos(angle + 3 * delta), r1 * sin(angle + 3 * delta), sign * z); - } - glEnd(); - - glBegin(GL_QUADS); - for (int j = 0; j < toothCount; ++j) { - GLdouble angle = j * toothAngle; - glVertex3d(r1 * cos(angle), r1 * sin(angle), sign * z); - glVertex3d(r2 * cos(angle + delta), r2 * sin(angle + delta), sign * z); - glVertex3d(r2 * cos(angle + 2 * delta), r2 * sin(angle + 2 * delta), sign * z); - glVertex3d(r1 * cos(angle + 3 * delta), r1 * sin(angle + 3 * delta), sign * z); - } - glEnd(); - } - - glBegin(GL_QUAD_STRIP); - for (int i = 0; i < toothCount; ++i) { - for (int j = 0; j < 2; ++j) { - GLdouble angle = (i + j / 2.0) * toothAngle; - GLdouble s1 = r1; - GLdouble s2 = r2; - if (j == 1) - qSwap(s1, s2); - - glNormal3d(cos(angle), sin(angle), 0.0); - glVertex3d(s1 * cos(angle), s1 * sin(angle), +z); - glVertex3d(s1 * cos(angle), s1 * sin(angle), -z); - - glNormal3d(s2 * sin(angle + delta) - s1 * sin(angle), - s1 * cos(angle) - s2 * cos(angle + delta), 0.0); - glVertex3d(s2 * cos(angle + delta), s2 * sin(angle + delta), +z); - glVertex3d(s2 * cos(angle + delta), s2 * sin(angle + delta), -z); - } - } - glVertex3d(r1, 0.0, +z); - glVertex3d(r1, 0.0, -z); - glEnd(); - - glShadeModel(GL_SMOOTH); - - glBegin(GL_QUAD_STRIP); - for (int i = 0; i <= toothCount; ++i) { - GLdouble angle = i * toothAngle; - glNormal3d(-cos(angle), -sin(angle), 0.0); - glVertex3d(r0 * cos(angle), r0 * sin(angle), +z); - glVertex3d(r0 * cos(angle), r0 * sin(angle), -z); - } - glEnd(); - - glEndList(); - - return list; -} - -void GLWidget::drawGear(GLuint gear, GLdouble dx, GLdouble dy, GLdouble dz, - GLdouble angle) -{ - glPushMatrix(); - glTranslated(dx, dy, dz); - glRotated(angle, 0.0, 0.0, 1.0); - glCallList(gear); - glPopMatrix(); -} - -void GLWidget::normalizeAngle(int *angle) -{ - while (*angle < 0) - *angle += 360 * 16; - while (*angle > 360 * 16) - *angle -= 360 * 16; -} |