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Diffstat (limited to 'examples/opengl/hellogl_es/glwidget.cpp')
| -rw-r--r-- | examples/opengl/hellogl_es/glwidget.cpp | 455 |
1 files changed, 0 insertions, 455 deletions
diff --git a/examples/opengl/hellogl_es/glwidget.cpp b/examples/opengl/hellogl_es/glwidget.cpp deleted file mode 100644 index 80444dfdbe..0000000000 --- a/examples/opengl/hellogl_es/glwidget.cpp +++ /dev/null @@ -1,455 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** 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 Nokia Corporation and its Subsidiary(-ies) 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 <QPainter> -#include <math.h> - -#include "bubble.h" - - -const int bubbleNum = 8; - -inline void CrossProduct(qreal &xOut, qreal &yOut, qreal &zOut, qreal x1, qreal y1, qreal z1, qreal x2, qreal y2, qreal z2) -{ - xOut = y1 * z2 - z1 * y2; - yOut = z1 * x2 - x1 * z2; - zOut = x1 * y2 - y1 * x2; -} - -inline void Normalize(qreal &x, qreal &y, qreal &z) -{ - qreal l = sqrt(x*x + y*y + z*z); - x = x / l; - y = y / l; - z = z / l; -} - -GLWidget::GLWidget(QWidget *parent) - : QGLWidget(parent) -{ - qtLogo = true; - createdVertices = 0; - createdNormals = 0; - m_vertexNumber = 0; - frames = 0; - setAttribute(Qt::WA_PaintOnScreen); - setAttribute(Qt::WA_NoSystemBackground); - setAutoBufferSwap(false); - m_showBubbles = true; -} - -GLWidget::~GLWidget() -{ - if (createdVertices) - delete[] createdVertices; - if (createdNormals) - delete[] createdNormals; -} - -void GLWidget::setScaling(int scale) { - - if (scale > 50) - m_fScale = 1 + qreal(scale -50) / 50 * 0.5; - else if (scale < 50) - m_fScale = 1- (qreal(50 - scale) / 50 * 1/2); - else - m_fScale = 1; -} - -void GLWidget::setLogo() { - qtLogo = true; -} - -void GLWidget::setTexture() { - qtLogo = false; -} - -void GLWidget::showBubbles(bool bubbles) -{ - m_showBubbles = bubbles; -} - -//! [2] -void GLWidget::paintQtLogo() -{ - glDisable(GL_TEXTURE_2D); - glEnableClientState(GL_VERTEX_ARRAY); - glVertexPointer(3,GL_FLOAT,0, createdVertices); - glEnableClientState(GL_NORMAL_ARRAY); - glNormalPointer(GL_FLOAT,0,createdNormals); - glDrawArrays(GL_TRIANGLES, 0, m_vertexNumber / 3); -} -//! [2] - -void GLWidget::paintTexturedCube() -{ - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, m_uiTexture); - GLfloat afVertices[] = { - -0.5, 0.5, 0.5, 0.5,-0.5,0.5,-0.5,-0.5,0.5, - 0.5, -0.5, 0.5, -0.5,0.5,0.5,0.5,0.5,0.5, - -0.5, -0.5, -0.5, 0.5,-0.5,-0.5,-0.5,0.5,-0.5, - 0.5, 0.5, -0.5, -0.5,0.5,-0.5,0.5,-0.5,-0.5, - - 0.5, -0.5, -0.5, 0.5,-0.5,0.5,0.5,0.5,-0.5, - 0.5, 0.5, 0.5, 0.5,0.5,-0.5,0.5,-0.5,0.5, - -0.5, 0.5, -0.5, -0.5,-0.5,0.5,-0.5,-0.5,-0.5, - -0.5, -0.5, 0.5, -0.5,0.5,-0.5,-0.5,0.5,0.5, - - 0.5, 0.5, -0.5, -0.5, 0.5, 0.5, -0.5, 0.5, -0.5, - -0.5, 0.5, 0.5, 0.5, 0.5, -0.5, 0.5, 0.5, 0.5, - -0.5, -0.5, -0.5, -0.5, -0.5, 0.5, 0.5, -0.5, -0.5, - 0.5, -0.5, 0.5, 0.5, -0.5, -0.5, -0.5, -0.5, 0.5 - }; - glEnableClientState(GL_VERTEX_ARRAY); - glVertexPointer(3,GL_FLOAT,0,afVertices); - - GLfloat afTexCoord[] = { - 0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f, - 1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f, - 1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f, - 0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f, - - 1.0f,1.0f, 1.0f,0.0f, 0.0f,1.0f, - 0.0f,0.0f, 0.0f,1.0f, 1.0f,0.0f, - 0.0f,0.0f, 1.0f,1.0f, 1.0f,0.0f, - 1.0f,1.0f, 0.0f,0.0f, 0.0f,1.0f, - - 0.0f,1.0f, 1.0f,0.0f, 1.0f,1.0f, - 1.0f,0.0f, 0.0f,1.0f, 0.0f,0.0f, - 1.0f,0.0f, 1.0f,1.0f, 0.0f,0.0f, - 0.0f,1.0f, 0.0f,0.0f, 1.0f,1.0f - }; - glEnableClientState(GL_TEXTURE_COORD_ARRAY); - glTexCoordPointer(2,GL_FLOAT,0,afTexCoord); - - GLfloat afNormals[] = { - - 0,0,-1, 0,0,-1, 0,0,-1, - 0,0,-1, 0,0,-1, 0,0,-1, - 0,0,1, 0,0,1, 0,0,1, - 0,0,1, 0,0,1, 0,0,1, - - -1,0,0, -1,0,0, -1,0,0, - -1,0,0, -1,0,0, -1,0,0, - 1,0,0, 1,0,0, 1,0,0, - 1,0,0, 1,0,0, 1,0,0, - - 0,-1,0, 0,-1,0, 0,-1,0, - 0,-1,0, 0,-1,0, 0,-1,0, - 0,1,0, 0,1,0, 0,1,0, - 0,1,0, 0,1,0, 0,1,0 - }; - glEnableClientState(GL_NORMAL_ARRAY); - glNormalPointer(GL_FLOAT,0,afNormals); - - glDrawArrays(GL_TRIANGLES, 0, 36); -} - -void GLWidget::initializeGL () -{ - glClearColor(0.1f, 0.1f, 0.2f, 1.0f); - - glEnable(GL_TEXTURE_2D); - glGenTextures(1, &m_uiTexture); - m_uiTexture = bindTexture(QImage(":/qt.png")); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - - GLfloat aLightPosition[] = {0.0f,0.3f,1.0f,0.0f}; - - glLightfv(GL_LIGHT0, GL_SPOT_DIRECTION, aLightPosition); - m_fAngle = 0; - m_fScale = 1; - createGeometry(); - createBubbles(bubbleNum - bubbles.count()); -} - -void GLWidget::paintGL() -{ - createBubbles(bubbleNum - bubbles.count()); - -//! [3] - QPainter painter; - painter.begin(this); - - glMatrixMode(GL_PROJECTION); - glPushMatrix(); - glLoadIdentity(); -//! [3] - -//! [4] - glMatrixMode(GL_MODELVIEW); - glPushMatrix(); - glMatrixMode(GL_TEXTURE); - glPushMatrix(); - - //Since OpenGL ES does not support glPush/PopAttrib(GL_ALL_ATTRIB_BITS) - //we have to take care of the states ourselves - - glClearColor(0.1f, 0.1f, 0.2f, 1.0f); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - glEnable(GL_TEXTURE_2D); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - - glShadeModel(GL_FLAT); - glFrontFace(GL_CW); - glCullFace(GL_FRONT); - glEnable(GL_CULL_FACE); - glEnable(GL_DEPTH_TEST); - - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - - glRotatef(m_fAngle, 0.0f, 1.0f, 0.0f); - glRotatef(m_fAngle, 1.0f, 0.0f, 0.0f); - glRotatef(m_fAngle, 0.0f, 0.0f, 1.0f); - glScalef(m_fScale, m_fScale,m_fScale); - glTranslatef(0.0f,-0.2f,0.0f); - - GLfloat matDiff[] = {0.40f, 1.0f, 0.0f, 1.0f}; - glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, matDiff); - - if (qtLogo) - paintQtLogo(); - else - paintTexturedCube(); -//! [4] - -//![5] - glMatrixMode(GL_MODELVIEW); - glPopMatrix(); - glMatrixMode(GL_PROJECTION); - glPopMatrix(); - glMatrixMode(GL_TEXTURE); - glPopMatrix(); - - glDisable(GL_LIGHTING); - glDisable(GL_LIGHT0); - - glDisable(GL_DEPTH_TEST); - glDisable(GL_CULL_FACE); -//![5] - -//! [6] - if (m_showBubbles) - foreach (Bubble *bubble, bubbles) { - bubble->drawBubble(&painter); - } -//! [6] - -//! [7] - QString framesPerSecond; - framesPerSecond.setNum(frames /(time.elapsed() / 1000.0), 'f', 2); - - painter.setPen(Qt::white); - - painter.drawText(20, 40, framesPerSecond + " fps"); - - painter.end(); -//! [7] - -//! [8] - swapBuffers(); -//! [8] - - QMutableListIterator<Bubble*> iter(bubbles); - - while (iter.hasNext()) { - Bubble *bubble = iter.next(); - bubble->move(rect()); - } - if (!(frames % 100)) { - time.start(); - frames = 0; - } - m_fAngle += 1.0f; - frames ++; -} - -void GLWidget::createBubbles(int number) -{ - for (int i = 0; i < number; ++i) { - QPointF position(width()*(0.1 + (0.8*qrand()/(RAND_MAX+1.0))), - height()*(0.1 + (0.8*qrand()/(RAND_MAX+1.0)))); - qreal radius = qMin(width(), height())*(0.0175 + 0.0875*qrand()/(RAND_MAX+1.0)); - QPointF velocity(width()*0.0175*(-0.5 + qrand()/(RAND_MAX+1.0)), - height()*0.0175*(-0.5 + qrand()/(RAND_MAX+1.0))); - - bubbles.append(new Bubble(position, radius, velocity)); - } -} - -void GLWidget::createGeometry() -{ - vertices.clear(); - normals.clear(); - - qreal x1 = +0.06f; - qreal y1 = -0.14f; - qreal x2 = +0.14f; - qreal y2 = -0.06f; - qreal x3 = +0.08f; - qreal y3 = +0.00f; - qreal x4 = +0.30f; - qreal y4 = +0.22f; - - quad(x1, y1, x2, y2, y2, x2, y1, x1); - quad(x3, y3, x4, y4, y4, x4, y3, x3); - - extrude(x1, y1, x2, y2); - extrude(x2, y2, y2, x2); - extrude(y2, x2, y1, x1); - extrude(y1, x1, x1, y1); - extrude(x3, y3, x4, y4); - extrude(x4, y4, y4, x4); - extrude(y4, x4, y3, x3); - - const qreal Pi = 3.14159f; - const int NumSectors = 100; - - for (int i = 0; i < NumSectors; ++i) { - qreal angle1 = (i * 2 * Pi) / NumSectors; - qreal x5 = 0.30 * sin(angle1); - qreal y5 = 0.30 * cos(angle1); - qreal x6 = 0.20 * sin(angle1); - qreal y6 = 0.20 * cos(angle1); - - qreal angle2 = ((i + 1) * 2 * Pi) / NumSectors; - qreal x7 = 0.20 * sin(angle2); - qreal y7 = 0.20 * cos(angle2); - qreal x8 = 0.30 * sin(angle2); - qreal y8 = 0.30 * cos(angle2); - - quad(x5, y5, x6, y6, x7, y7, x8, y8); - - extrude(x6, y6, x7, y7); - extrude(x8, y8, x5, y5); - } - -//! [1] - m_vertexNumber = vertices.size(); - createdVertices = new GLfloat[m_vertexNumber]; - createdNormals = new GLfloat[m_vertexNumber]; - for (int i = 0;i < m_vertexNumber;i++) { - createdVertices[i] = vertices.at(i) * 2; - createdNormals[i] = normals.at(i); - } - vertices.clear(); - normals.clear(); -} -//! [1] - -//! [0] -void GLWidget::quad(qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4) -{ - qreal nx, ny, nz; - - vertices << x1 << y1 << -0.05f; - vertices << x2 << y2 << -0.05f; - vertices << x4 << y4 << -0.05f; - - vertices << x3 << y3 << -0.05f; - vertices << x4 << y4 << -0.05f; - vertices << x2 << y2 << -0.05f; - - CrossProduct(nx, ny, nz, x2 - x1, y2 - y1, 0, x4 - x1, y4 - y1, 0); - Normalize(nx, ny, nz); - - normals << nx << ny << nz; - normals << nx << ny << nz; - normals << nx << ny << nz; - - normals << nx << ny << nz; - normals << nx << ny << nz; - normals << nx << ny << nz; - - vertices << x4 << y4 << 0.05f; - vertices << x2 << y2 << 0.05f; - vertices << x1 << y1 << 0.05f; - - vertices << x2 << y2 << 0.05f; - vertices << x4 << y4 << 0.05f; - vertices << x3 << y3 << 0.05f; - - CrossProduct(nx, ny, nz, x2 - x4, y2 - y4, 0, x1 - x4, y1 - y4, 0); - Normalize(nx, ny, nz); - - normals << nx << ny << nz; - normals << nx << ny << nz; - normals << nx << ny << nz; - - normals << nx << ny << nz; - normals << nx << ny << nz; - normals << nx << ny << nz; -} -//! [0] - -void GLWidget::extrude(qreal x1, qreal y1, qreal x2, qreal y2) -{ - qreal nx, ny, nz; - - vertices << x1 << y1 << +0.05f; - vertices << x2 << y2 << +0.05f; - vertices << x1 << y1 << -0.05f; - - vertices << x2 << y2 << -0.05f; - vertices << x1 << y1 << -0.05f; - vertices << x2 << y2 << +0.05f; - - CrossProduct(nx, ny, nz, x2 - x1, y2 - y1, 0.0f, 0.0f, 0.0f, -0.1f); - Normalize(nx, ny, nz); - - normals << nx << ny << nz; - normals << nx << ny << nz; - normals << nx << ny << nz; - - normals << nx << ny << nz; - normals << nx << ny << nz; - normals << nx << ny << nz; -} |