1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the Qt Data Visualization module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:GPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU 19 ** General Public License version 3 or (at your option) any later version 20 ** approved by the KDE Free Qt Foundation. The licenses are as published by 21 ** the Free Software Foundation and appearing in the file LICENSE.GPL3 22 ** included in the packaging of this file. Please review the following 23 ** information to ensure the GNU General Public License requirements will 24 ** be met: https://www.gnu.org/licenses/gpl-3.0.html. 25 ** 26 ** $QT_END_LICENSE$ 27 ** 28 ****************************************************************************/ 29 30 // 31 // W A R N I N G 32 // ------------- 33 // 34 // This file is not part of the QtDataVisualization API. It exists purely as an 35 // implementation detail. This header file may change from version to 36 // version without notice, or even be removed. 37 // 38 // We mean it. 39 40 #ifndef DATAVISUALIZATIONGLOBAL_P_H 41 #define DATAVISUALIZATIONGLOBAL_P_H 42 43 #include "qdatavisualizationglobal.h" 44 #include <QtGui/QOpenGLFunctions> 45 #include <QtGui/QVector3D> 46 #include <QtGui/QQuaternion> 47 #include <QtCore/QDebug> 48 49 QT_BEGIN_NAMESPACE_DATAVISUALIZATION 50 51 // Constants used in several files 52 // Distance from camera to origin 53 static const GLfloat cameraDistance = 6.0f; 54 // Size of font to be used in label texture rendering. Doesn't affect the actual font size. 55 static const int textureFontSize = 50; 56 static const GLfloat defaultRatio = 1.0f / 1.6f; // default aspect ratio 16:10 57 #if !(defined QT_OPENGL_ES) 58 static const float gridLineOffset = 0.0001f; // Offset for lifting grid lines off background 59 #else 60 static const float gridLineOffset = 0.0035f; // Offset for lifting grid lines off background 61 #endif 62 // Default light position. To have shadows working correctly, light should be as far as camera, or a bit further 63 // y position is added to the minimum height (or can be thought to be that much above or below the camera) 64 static const QVector3D defaultLightPos = QVector3D(0.0f, 0.5f, 0.0f); 65 static const QVector3D zeroVector = QVector3D(0.0f, 0.0f, 0.0f); 66 static const QVector3D oneVector = QVector3D(1.0f, 1.0f, 1.0f); 67 static const QVector3D upVector = QVector3D(0.0f, 1.0f, 0.0f); 68 static const QVector3D cameraDistanceVector = QVector3D(0.0f, 0.0f, cameraDistance); 69 static const QQuaternion identityQuaternion; 70 71 // Skip color == selection texture's background color 72 static const QVector4D selectionSkipColor = QVector4D(255.0f, 255.0f, 255.0f, 255.0f); 73 static const QVector4D invalidColorVector = QVector4D(-1.0f, -1.0f, -1.0f, -1.0f); 74 static const GLfloat itemAlpha = 0.0f; 75 static const GLfloat customItemAlpha = 252.0f; 76 static const GLfloat labelValueAlpha = 253.0f; 77 static const GLfloat labelRowAlpha = 254.0f; 78 static const GLfloat labelColumnAlpha = 255.0f; 79 static const GLfloat gradientTextureHeight = 1024.0f; 80 static const GLfloat gradientTextureWidth = 2.0f; 81 static const GLfloat uniformTextureHeight = 64.0f; 82 static const GLfloat uniformTextureWidth = 2.0f; 83 static const GLfloat labelMargin = 0.05f; 84 static const GLfloat gridLineWidth = 0.005f; 85 86 QT_END_NAMESPACE_DATAVISUALIZATION 87 88 #endif 89