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Diffstat (limited to 'examples/qt3d/graphicsview/cubeitem.cpp')
| -rw-r--r-- | examples/qt3d/graphicsview/cubeitem.cpp | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/examples/qt3d/graphicsview/cubeitem.cpp b/examples/qt3d/graphicsview/cubeitem.cpp deleted file mode 100644 index 10c7609f..00000000 --- a/examples/qt3d/graphicsview/cubeitem.cpp +++ /dev/null @@ -1,193 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation ([email protected]) -** -** This file is part of the QtQuick3D 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 "cubeitem.h" -#include "qglpainter.h" -#include "qglcube.h" -#include "qray3d.h" -#include "qplane3d.h" -#include "qtriangle3d.h" -#include "qgraphicsembedscene.h" - -const qreal CubeSize = 2.0f; - -CubeItem::CubeItem(QGraphicsItem *parent) - : ModelItem(parent) -{ - QGLBuilder builder; - builder.newSection(QGL::Faceted); - builder << QGLCube(CubeSize); - cube = builder.finalizedSceneNode(); -} - -CubeItem::~CubeItem() -{ - delete cube; -} - -void CubeItem::paintGL(QGLPainter *painter) -{ - GLuint textureId = this->textureId(); - if (textureId) { - glDisable(GL_DEPTH_TEST); - glEnable(GL_BLEND); - painter->setFaceColor(QGL::AllFaces, QColor(0, 0, 0, 200)); - painter->setStandardEffect(QGL::LitDecalTexture2D); - glBindTexture(GL_TEXTURE_2D, textureId); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - if (painter->isFixedFunction()) - glEnable(GL_TEXTURE_2D); - glCullFace(GL_FRONT); - glEnable(GL_CULL_FACE); - cube->draw(painter); - glCullFace(GL_BACK); - cube->draw(painter); - glDisable(GL_CULL_FACE); - glBindTexture(GL_TEXTURE_2D, 0); - if (painter->isFixedFunction()) - glDisable(GL_TEXTURE_2D); - } else { - painter->setStandardEffect(QGL::LitMaterial); - cube->draw(painter); - } -} - -static const int vertexDataLen = 6 * 4 * 3; - -static const float vertexData[vertexDataLen] = { - -0.5f * CubeSize, -0.5f * CubeSize, -0.5f * CubeSize, - -0.5f * CubeSize, -0.5f * CubeSize, 0.5f * CubeSize, - -0.5f * CubeSize, 0.5f * CubeSize, 0.5f * CubeSize, - -0.5f * CubeSize, 0.5f * CubeSize, -0.5f * CubeSize, - - -0.5f * CubeSize, 0.5f * CubeSize, -0.5f * CubeSize, - -0.5f * CubeSize, 0.5f * CubeSize, 0.5f * CubeSize, - 0.5f * CubeSize, 0.5f * CubeSize, 0.5f * CubeSize, - 0.5f * CubeSize, 0.5f * CubeSize, -0.5f * CubeSize, - - 0.5f * CubeSize, 0.5f * CubeSize, -0.5f * CubeSize, - 0.5f * CubeSize, 0.5f * CubeSize, 0.5f * CubeSize, - 0.5f * CubeSize, -0.5f * CubeSize, 0.5f * CubeSize, - 0.5f * CubeSize, -0.5f * CubeSize, -0.5f * CubeSize, - - 0.5f * CubeSize, -0.5f * CubeSize, -0.5f * CubeSize, - 0.5f * CubeSize, -0.5f * CubeSize, 0.5f * CubeSize, - -0.5f * CubeSize, -0.5f * CubeSize, 0.5f * CubeSize, - -0.5f * CubeSize, -0.5f * CubeSize, -0.5f * CubeSize, - - 0.5f * CubeSize, -0.5f * CubeSize, 0.5f * CubeSize, - 0.5f * CubeSize, 0.5f * CubeSize, 0.5f * CubeSize, - -0.5f * CubeSize, 0.5f * CubeSize, 0.5f * CubeSize, - -0.5f * CubeSize, -0.5f * CubeSize, 0.5f * CubeSize, - - 0.5f * CubeSize, 0.5f * CubeSize, -0.5f * CubeSize, - 0.5f * CubeSize, -0.5f * CubeSize, -0.5f * CubeSize, - -0.5f * CubeSize, -0.5f * CubeSize, -0.5f * CubeSize, - -0.5f * CubeSize, 0.5f * CubeSize, -0.5f * CubeSize -}; - -QPointF CubeItem::intersection(const QRay3D &ray, int *actualFace) const -{ - // Determine which face of the cube contains the point. - QMatrix4x4 mv = camera()->modelViewMatrix(); - QVector3D pt1, pt2, pt3, pt4; - QVector2D tc1, tc2, tc3; - bool singleFace = (pressedFace() != -1); - for (int face = 0; face < 6; ++face) { - if (singleFace && face != pressedFace()) - continue; - - // Test the two triangles on the face for an intersection. - pt1 = QVector3D(vertexData[face * 4 * 3], - vertexData[face * 4 * 3 + 1], - vertexData[face * 4 * 3 + 2]); - pt2 = QVector3D(vertexData[face * 4 * 3 + 3], - vertexData[face * 4 * 3 + 4], - vertexData[face * 4 * 3 + 5]); - pt3 = QVector3D(vertexData[face * 4 * 3 + 6], - vertexData[face * 4 * 3 + 7], - vertexData[face * 4 * 3 + 8]); - pt4 = QVector3D(vertexData[face * 4 * 3 + 9], - vertexData[face * 4 * 3 + 10], - vertexData[face * 4 * 3 + 11]); - pt1 = mv.map(pt1); - pt2 = mv.map(pt2); - pt3 = mv.map(pt3); - pt4 = mv.map(pt4); - QTriangle3D triangle(pt1, pt2, pt3); - qreal t = triangle.intersection(ray); - if (qIsNaN(t)) { - triangle.setQ(pt3); - triangle.setR(pt4); - t = triangle.intersection(ray); - if (qIsNaN(t)) { - if (!singleFace) - continue; - // The mouse probably moved outside the face while the - // mouse button was held down. Use the triangle's plane - // to compute a virtual texture co-ordinate. - t = triangle.plane().intersection(ray); - } - tc1 = QVector2D(1.0f, 0.0f); - tc2 = QVector2D(0.0f, 1.0f); - tc3 = QVector2D(0.0f, 0.0f); - } else { - tc1 = QVector2D(1.0f, 0.0f); - tc2 = QVector2D(1.0f, 1.0f); - tc3 = QVector2D(0.0f, 1.0f); - } - - // We want the face that is pointing towards the user. - QVector3D v = QVector3D::crossProduct(pt2 - pt1, pt3 - pt1); - if (!singleFace && v.z() <= 0.0f) - continue; - - // Get the texture co-ordinate corresponding to the intersection. - QVector2D uv = triangle.uv(ray.point(t)); - QVector2D tc = - uv.x() * tc1 + uv.y() * tc2 + (1 - uv.x() - uv.y()) * tc3; - *actualFace = face; - return QPointF(tc.x(), tc.y()); - } - - *actualFace = -1; - return QPointF(); -} |