386 lines
8.8 KiB
C++
386 lines
8.8 KiB
C++
#include "..\Header\OglViewerWidget.h"
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#include "..\Header\MainWindow.h"
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#include "..\Header\FreeCamera.h"
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#include "..\Header\OrbitCamera.h"
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#include "..\Header\MoveCamera.h"
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#include <QMouseEvent>
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#include <QDropEvent>
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#include <QMimeData>
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#include "..\Header\Profiler.h"
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#define DEFAULT_Z_DISTANCE -4.0
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/////////////////////////////////////////////////////////////////////////
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// constructor/destructor
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OglViewerWidget::OglViewerWidget(QWidget *parent)
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: QOpenGLWidget(parent)
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, m_dataEngine(Q_NULLPTR)
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, m_camera(new FreeCamera)
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{
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setFocus();
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setAcceptDrops(true);
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// settings window
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m_settings = new SettingsWindow(m_backgroundColorOff.toVector3D() * 255, m_backgroundColorOn.toVector3D() * 255, m_light.intensities * 255, true, m_light.ambientCoefficient, m_light.attenuationFactor, 1, this);
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connect(m_settings, &SettingsWindow::updateBGColorOff, this, &OglViewerWidget::setBGColorOff);
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connect(m_settings, &SettingsWindow::updateBGColorOn, this, &OglViewerWidget::setBGColorOn);
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connect(m_settings, &SettingsWindow::updateLightColor, this, &OglViewerWidget::setLightColor);
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connect(m_settings, &SettingsWindow::updateAttFac, this, &OglViewerWidget::setAttFac);
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connect(m_settings, &SettingsWindow::updateAmbCoef, this, &OglViewerWidget::setAmbCoef);
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connect(m_settings, &SettingsWindow::sendHeadlight, this, &OglViewerWidget::setHeadlight);
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connect(m_settings, &SettingsWindow::sendBackfaceCulling, this, &OglViewerWidget::setBackfaceCulling);
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connect(m_settings, &SettingsWindow::sendZommSpeed, [this](int value) {m_camera->setZoomSpeed(value); });
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}
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OglViewerWidget::~OglViewerWidget()
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{
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// Make sure the context is current when deleting the texture
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// and the buffers.
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makeCurrent();
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delete m_dataEngine;
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doneCurrent();
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delete m_camera;
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delete m_settings;
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}
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/////////////////////////////////////////////////////////////////////////
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// functions
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void OglViewerWidget::initShaders()
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{
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// Compile vertex shader
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if (!m_program.addShaderFromSourceFile(QOpenGLShader::Vertex, ":/shaders/vshader.glsl"))
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close();
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// Compile fragment shader
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if (!m_program.addShaderFromSourceFile(QOpenGLShader::Fragment, ":/shaders/fshader.glsl"))
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close();
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// Link shader pipeline
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if (!m_program.link())
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close();
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// Bind shader pipeline for use
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if (!m_program.bind())
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close();
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}
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void OglViewerWidget::resetView()
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{
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m_camera->resetView();
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if (m_light.headlight)
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updateLightPosition();
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update();
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}
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void OglViewerWidget::updateLightPosition()
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{
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QVector4D lightPosition = { 0,0,0,1 };
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lightPosition = m_camera->getMatrix().inverted() * lightPosition;
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m_light.position.setX(lightPosition.x());
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m_light.position.setY(lightPosition.y());
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m_light.position.setZ(lightPosition.z());
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}
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// OpenGL ///////////////////////////////////////////////////////////////
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void OglViewerWidget::initializeGL()
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{
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initializeOpenGLFunctions();
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initShaders();
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// Enable depth buffer
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glEnable(GL_DEPTH_TEST);
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// Enable transparency
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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m_dataEngine = new GeometryEngine(this);
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connect(m_dataEngine, &GeometryEngine::requestResetView, this, &OglViewerWidget::resetView);
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connect(m_dataEngine, &GeometryEngine::requestUpdate, this, static_cast<void(OglViewerWidget::*)(void)>(&OglViewerWidget::update));
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}
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void OglViewerWidget::resizeGL(int w, int h)
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{
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// Calculate aspect ratio
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qreal aspect = qreal(w) / qreal(h ? h : 1);
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// Set near plane to 3.0, far plane to 7.0, field of view 45 degrees
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const qreal zNear = 0.1, zFar = 100.0, fov = 45.0;
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// Reset projection
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m_projection.setToIdentity();
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// Set perspective projection
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m_projection.perspective(fov, aspect, zNear, zFar);
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}
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void OglViewerWidget::paintGL()
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{
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// set background color, last value is dirtybit
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if (m_lightOn && m_backgroundColorOn[3] == 1.0)
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{
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glClearColor(m_backgroundColorOn[0], m_backgroundColorOn[1], m_backgroundColorOn[2], 0.0000f);
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m_backgroundColorOn[3] = 0.0;
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}
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else if (!m_lightOn && m_backgroundColorOff[3] == 1.0)
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{
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glClearColor(m_backgroundColorOff[0], m_backgroundColorOff[1], m_backgroundColorOff[2], 0.0000f);
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m_backgroundColorOff[3] = 0.0;
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}
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// Clear color and depth buffer
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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// Set view-projection matrix
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m_program.setUniformValue("vp_matrix", m_projection * m_camera->getMatrix());
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// Set Light values
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m_program.setUniformValue("b_light", m_lightOn);
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m_program.setUniformValue("light.position", m_light.position);
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m_program.setUniformValue("light.intensities", m_light.intensities);
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m_program.setUniformValue("light.attenuationFactor", m_light.attenuationFactor);
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m_program.setUniformValue("light.ambientCoefficient", m_light.ambientCoefficient);
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// Set camera position
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m_program.setUniformValue("cameraPosition", (m_camera->getMatrix().inverted() * QVector4D(0,0,0,1)).toVector3D());
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// Draw cube geometry
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if (m_backfaceCulling)
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glEnable(GL_CULL_FACE);
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if (m_wireframe)
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glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
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m_dataEngine->drawGeometry(&m_program);
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glDisable(GL_CULL_FACE);
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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}
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// Inputs ///////////////////////////////////////////////////////////////
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void OglViewerWidget::mousePressEvent(QMouseEvent *e)
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{
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// Save mouse press position
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m_mouse.position = QVector2D(e->localPos());
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// Which button has been pressed?
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if (e->button() == Qt::LeftButton)
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m_mouse.left = true;
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else if (e->button() == Qt::RightButton)
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m_mouse.right = true;
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}
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void OglViewerWidget::mouseReleaseEvent(QMouseEvent *e)
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{
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if (e->button() == Qt::LeftButton)
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m_mouse.left = false;
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else if (e->button() == Qt::RightButton)
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m_mouse.right = false;
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}
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void OglViewerWidget::mouseMoveEvent(QMouseEvent *e)
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{
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if (m_mouse.left)
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{
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// get the difference between last press and now
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m_camera->rotateAction(QVector2D(e->localPos()) - m_mouse.position);
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// update the new position
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m_mouse.position = QVector2D(e->localPos());
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// request an update
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if (m_light.headlight)
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updateLightPosition();
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update();
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}
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else if (m_mouse.right)
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{
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// get the difference between last press and now
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m_camera->moveAction(QVector2D(e->localPos()) - m_mouse.position);
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// update the new position
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m_mouse.position = QVector2D(e->localPos());
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// request an update
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if (m_light.headlight)
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updateLightPosition();
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update();
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}
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}
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void OglViewerWidget::wheelEvent(QWheelEvent *e)
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{
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m_camera->wheelAction(e->angleDelta().y());
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if (m_light.headlight)
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updateLightPosition();
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update();
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}
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void OglViewerWidget::keyPressEvent(QKeyEvent *e)
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{
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if (e->key() == Qt::Key_Space)
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{
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resetView();
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}
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else if (e->key() == Qt::Key_Escape)
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{
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parentWidget()->close();
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}
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else if (e->key() == Qt::Key_L)
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{
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updateLightPosition();
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update();
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}
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}
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void OglViewerWidget::dragEnterEvent(QDragEnterEvent *e)
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{
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if (e->mimeData()->hasUrls())
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if(e->mimeData()->urls().size() == 1)
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if(e->mimeData()->urls().first().toLocalFile().endsWith(".msh"))
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e->acceptProposedAction();
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}
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void OglViewerWidget::dropEvent(QDropEvent * e)
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{
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m_dataEngine->loadFile(e->mimeData()->urls().first().toLocalFile());
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}
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/////////////////////////////////////////////////////////////////////////
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// public slots
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void OglViewerWidget::loadFile(QString name)
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{
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m_dataEngine->loadFile(name);
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}
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void OglViewerWidget::useFreeCamera()
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{
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delete m_camera;
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m_camera = new FreeCamera;
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if (m_lightOn)
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updateLightPosition();
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update();
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}
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void OglViewerWidget::useOrbitCamera()
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{
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delete m_camera;
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m_camera = new OrbitCamera;
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if (m_lightOn)
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updateLightPosition();
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update();
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}
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void OglViewerWidget::useMoveCamera()
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{
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delete m_camera;
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m_camera = new MoveCamera;
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if (m_lightOn)
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updateLightPosition();
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update();
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}
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void OglViewerWidget::toggleWireframe()
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{
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m_wireframe = !m_wireframe;
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update();
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}
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void OglViewerWidget::toggleLight()
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{
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m_lightOn = !m_lightOn;
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if (m_lightOn)
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{
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m_backgroundColorOn[3] = 1.0;
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updateLightPosition();
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}
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else
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{
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m_backgroundColorOff[3] = 1.0;
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}
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update();
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}
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void OglViewerWidget::showSettings()
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{
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m_settings->show();
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}
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void OglViewerWidget::setBGColorOff(QVector3D value)
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{
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m_backgroundColorOff = QVector4D(value / 255, 1.0f);
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if (!m_lightOn)
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update();
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}
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void OglViewerWidget::setBGColorOn(QVector3D value)
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{
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m_backgroundColorOn = QVector4D(value / 255, 1.0f);
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if (m_lightOn)
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update();
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}
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void OglViewerWidget::setLightColor(QVector3D value)
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{
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m_light.intensities = value / 255;
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if (m_lightOn)
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update();
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}
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void OglViewerWidget::setAttFac(double value)
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{
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m_light.attenuationFactor = (float)value;
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if (m_lightOn)
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update();
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}
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void OglViewerWidget::setAmbCoef(double value)
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{
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m_light.ambientCoefficient = (float)value;
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if (m_lightOn)
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update();
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}
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void OglViewerWidget::setHeadlight(bool value)
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{
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m_light.headlight = value;
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if (m_lightOn && value)
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{
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updateLightPosition();
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update();
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}
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}
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void OglViewerWidget::setBackfaceCulling(bool value)
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{
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m_backfaceCulling = value;
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update();
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}
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