97 lines
3.0 KiB
C++
97 lines
3.0 KiB
C++
/*******************************************************************************
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Copyright (c) 2005-2009 David Williams
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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*******************************************************************************/
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#ifndef __BasicExample_OpenGLWidget_H__
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#define __BasicExample_OpenGLWidget_H__
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#include "PolyVox/Mesh.h"
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#include <QOpenGLFunctions_3_1>
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#include <QElapsedTimer>
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#include <QGLWidget>
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#include <QGLShaderProgram>
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#include <QOpenGLVertexArrayObject>
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#include <QOpenGLBuffer>
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// This is a very basic class for getting an OpenGL example up and running with Qt5. It simply displays
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// an OpenGL widget and implements an FPS-style camera as well as other very basic functionality. User
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// code can derive from this and override the provided virtual functions to implement functionality.
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class OpenGLWidget : public QGLWidget, protected QOpenGLFunctions_3_1
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{
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protected:
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// Protected constructor because this widget should not be created directly - it should only be subclassed.
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OpenGLWidget(QWidget *parent);
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// Derived classes should override these to provide functionality.
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virtual void initialize() {}
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virtual void renderOneFrame() {}
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// Getters for properties defined by this widget.
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const QMatrix4x4& viewMatrix();
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const QMatrix4x4& projectionMatrix();
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// Setters for properties defined by this widget.
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void setCameraTransform(QVector3D position, float pitch, float yaw);
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private:
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// Qt OpenGL functions
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void initializeGL();
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void resizeGL(int w, int h);
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void paintGL();
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// Mouse handling
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void mouseMoveEvent(QMouseEvent* event);
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void mousePressEvent(QMouseEvent* event);
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// Keyboard handling
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void keyPressEvent(QKeyEvent* event);
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void keyReleaseEvent(QKeyEvent* event);
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// Matrices
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QMatrix4x4 mViewMatrix;
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QMatrix4x4 mProjectionMatrix;
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// Mouse data
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QPoint m_LastFrameMousePos;
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QPoint m_CurrentMousePos;
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// Keyboard data
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QList<int> mPressedKeys;
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// For input handling and movement
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float mCameraMoveSpeed = 50.0f;
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float mCameraRotateSpeed = 0.005f;
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// Camera properties
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QVector3D mCameraPosition = QVector3D(0, 0, -100);
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float mCameraYaw = 0.0f;
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float mCameraPitch = 0.0f;
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float mCameraFOV = 60.0f;
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QElapsedTimer mElapsedTimer;
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};
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#endif //__BasicExample_OpenGLWidget_H__
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