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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.
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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
49QT_BEGIN_NAMESPACE_DATAVISUALIZATION
50
51// Constants used in several files
52// Distance from camera to origin
53static const GLfloat cameraDistance = 6.0f;
54// Size of font to be used in label texture rendering. Doesn't affect the actual font size.
55static const int textureFontSize = 50;
56static const GLfloat defaultRatio = 1.0f / 1.6f; // default aspect ratio 16:10
57#if !(defined QT_OPENGL_ES)
58static const float gridLineOffset = 0.0001f; // Offset for lifting grid lines off background
59#else
60static 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)
64static const QVector3D defaultLightPos = QVector3D(0.0f, 0.5f, 0.0f);
65static const QVector3D zeroVector = QVector3D(0.0f, 0.0f, 0.0f);
66static const QVector3D oneVector = QVector3D(1.0f, 1.0f, 1.0f);
67static const QVector3D upVector = QVector3D(0.0f, 1.0f, 0.0f);
68static const QVector3D cameraDistanceVector = QVector3D(0.0f, 0.0f, cameraDistance);
69static const QQuaternion identityQuaternion;
70
71// Skip color == selection texture's background color
72static const QVector4D selectionSkipColor = QVector4D(255.0f, 255.0f, 255.0f, 255.0f);
73static const QVector4D invalidColorVector = QVector4D(-1.0f, -1.0f, -1.0f, -1.0f);
74static const GLfloat itemAlpha = 0.0f;
75static const GLfloat customItemAlpha = 252.0f;
76static const GLfloat labelValueAlpha = 253.0f;
77static const GLfloat labelRowAlpha = 254.0f;
78static const GLfloat labelColumnAlpha = 255.0f;
79static const GLfloat gradientTextureHeight = 1024.0f;
80static const GLfloat gradientTextureWidth = 2.0f;
81static const GLfloat uniformTextureHeight = 64.0f;
82static const GLfloat uniformTextureWidth = 2.0f;
83static const GLfloat labelMargin = 0.05f;
84static const GLfloat gridLineWidth = 0.005f;
85
86QT_END_NAMESPACE_DATAVISUALIZATION
87
88#endif
89