/
glwidget.cpp
executable file
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glwidget.cpp
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#include "glwidget.h"
#include "graphics/ObjMesh.h"
#include "GL/glu.h"
#include "GL/glut.h"
#include "graphics/materialobj.h"
#include "graphics/ShaderPrimitives/camera.h"
#include "math/quaternion.h"
#include "scene/scene.h"
static bool lbpressed = false;
static bool rbpressed = false;
#define SET_CAM 0
#define SET_OBJECT 1
static float last_x = 0.0;
static float last_y = 0.0;
static float savedCamera[9];
int type = 0;
const GLuint SHADOW_WIDTH = 2*1024, SHADOW_HEIGHT = 2*1024;
GLWidget::GLWidget(QWidget *parent) :
QGLWidget(QGLFormat(QGL::SampleBuffers),parent),
m_camera( new Camera( this ) )
{
setFocusPolicy(Qt::StrongFocus);
glEnable(GL_MULTISAMPLE);
glEnable(GL_STENCIL_FUNC);
simTimer = new QTimer(this);
connect(simTimer, SIGNAL(timeout()), this, SLOT(updateGL()));
simTimer->start(0);
// Initialize the camera position and orientation
m_camera->setPosition( QVector3D( 5.0f, 5.0f, 5.0f ) );
m_camera->setViewCenter( QVector3D( 0.0f, 0.0f, 0.0f ) );
m_camera->setUpVector( QVector3D( 0.0f, 1.0f, 0.0f ) );
QGLFormat glFormat;
glFormat.setVersion( 3, 3 );
glFormat.setProfile( QGLFormat::CoreProfile ); // Requires >=Qt-4.8.0
glFormat.setSampleBuffers( true );
glFormat.setSamples(16);
this->setFormat(glFormat);
scene = new Scene(this);
scene->setCamera(m_camera);
withshadow = true;
}
void GLWidget::initializeGL()
{
// Enable depth testing
glEnable( GL_DEPTH_TEST );
// Set the clear color to white
glClearColor( 1.0f, 1.0f, 1.0f, 1.0f );
scene->initializeShaders();
glGenFramebuffers(1, &depthMapFBO);
glGenTextures(1, &depthMap);
glBindTexture(GL_TEXTURE_2D, depthMap);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT,
SHADOW_WIDTH, SHADOW_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthMap, 0);
glDrawBuffer(GL_NONE);
glReadBuffer(GL_NONE);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
void GLWidget::paintGL()
{
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
if(withshadow){
glViewport(0, 0, SHADOW_WIDTH, SHADOW_HEIGHT);
glBindFramebuffer(GL_FRAMEBUFFER, depthMapFBO);
glClear(GL_DEPTH_BUFFER_BIT);
renderSceneShadow();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
// 2. Render scene as normal
glViewport(0, 0, winWidth, winHeight);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, depthMap);
renderSceneWithShadow();
}else{
renderScene();
}
}
void GLWidget::resizeGL(int w, int h)
{
glViewport(0, 0, w, h);
winWidth = w;
winHeight = h;
float aspect = static_cast<float>( w ) / static_cast<float>( h );
m_camera->setPerspectiveProjection( 30.0f, aspect, 0.1, 10000.0f );
scene->setWindow(w,h);
}
void GLWidget::mouseMoveEvent(QMouseEvent *event)
{
int y = event->pos().y();
int x = event->pos().x();
if (lbpressed && !rbpressed) {
m_camera->rotatex(y,last_y);
m_camera->rotatey(x,last_x);
}
if (!lbpressed && rbpressed) {
m_camera->translatex(x,last_x);
m_camera->translatey(y,last_y);
}
if (lbpressed && rbpressed) {
m_camera->zoom(y,last_y);
}
last_x = x;
last_y = y;
//printf("Moveddd...\n");
}
void GLWidget::mouseReleaseEvent(QMouseEvent *event)
{
int y = event->pos().y();
int x = event->pos().x();
if (event->button() & Qt::LeftButton) {
// when the button is pressed
lbpressed = false;
}
// if the left button is pressed
if (event->button() & Qt::RightButton) {
// when the button is pressed
rbpressed = false;
}
last_x = x;
last_y = y;
update();
}
void GLWidget::mousePressEvent(QMouseEvent *event)
{
int y = event->pos().y();
int x = event->pos().x();
// if the left button is pressed
if (event->button() & Qt::LeftButton) {
// when the button is pressed
lbpressed = true;
}
// if the left button is pressed
if (event->button() & Qt::RightButton) {
// when the button is pressed
rbpressed = true;
}
last_x = x;
last_y = y;
update();
}
void GLWidget::keyPressEvent(QKeyEvent *event)
{
if(event->key() == Qt::Key_O){
withshadow = !withshadow;
update();
}
}
void GLWidget::renderScene()
{
Matrix4x4 *transform = new Matrix4x4();
MaterialObj* mate = new MaterialObj();
mate->setMaterial(mate,MATERIAL_RUBY);
//transform->scale(0.5,0.5,0.5);
transform->setIdentity();
// scene->drawCylinder(transform,mate);
// transform->setIdentity();
// transform->scale(2,1.0,1.5);
// transform->translate(-2,1,0);
transform->setIdentity();
transform->scale(1.0,1.0,1.0);
transform->translate(0,1.5,0);
mate->setMaterial(mate,MATERIAL_RUBY);
scene->drawCube(transform,mate);
transform->setIdentity();
transform->scale(1.0,1.0,1.0);
transform->translate(2,0,1);
mate->setMaterial(mate,MATERIAL_TURQUOSIE);
scene->drawCube(transform,mate);
transform->setIdentity();
//transform->scale(0.5,0.5,0.5);
//transform->setTranslate(Vec4(-1,0,2,1.0));
transform->scale(0.5,0.5,0.5);
transform->setRotationX(60);
transform->setRotationZ(60);
transform->setTranslate(Vec4(-1,0,2,1.0));
//transform->setRotationX(60);
//transform->setRotationZ(60);
mate->setMaterial(mate,MATERIAL_TURQUOSIE);
scene->drawCube(transform,mate);
// mate->setMaterial(mate,MATERIAL_EMERALD);
// scene->drawSphere(transform,mate);
transform->setIdentity();
transform->scale(25.0,1.0,25.0);
transform->translate(0.0,-0.5,0.0);
mate->setMaterial(mate,MATERIAL_GOLD);
scene->drawPlane(transform,mate);
delete transform;
delete mate;
// Matrix4x4 *transform = new Matrix4x4();
// MaterialObj* mate = new MaterialObj();
// mate->setMaterial(mate,MATERIAL_RUBY);
// //transform->scale(0.5,0.5,0.5);
// transform->setIdentity();
//// scene->drawCylinder(transform,mate);
//// transform->setIdentity();
//// transform->scale(2,1.0,1.5);
//// transform->translate(-2,1,0);
// mate->setMaterial(mate,MATERIAL_COPPER);
// scene->drawCube(transform,mate);
// transform->setIdentity();
// transform->scale(1.0,1.0,1.0);
// transform->translate(0,0,2.5);
//// mate->setMaterial(mate,MATERIAL_EMERALD);
//// scene->drawSphere(transform,mate);
// transform->setIdentity();
// transform->scale(20.0,1.0,20.0);
// transform->translate(0.0,-1.0,0.0);
// mate->setMaterial(mate,MATERIAL_GOLD);
// scene->drawPlane(transform,mate);
// delete transform;
// delete mate;
}
void GLWidget::renderSceneShadow()
{
Matrix4x4 *transform = new Matrix4x4();
MaterialObj* mate = new MaterialObj();
mate->setMaterial(mate,MATERIAL_RUBY);
//transform->scale(0.5,0.5,0.5);
transform->setIdentity();
// scene->drawCylinder(transform,mate);
// transform->setIdentity();
// transform->scale(2,1.0,1.5);
// transform->translate(-2,1,0);
transform->setIdentity();
transform->scale(1.0,1.0,1.0);
transform->translate(0,1.5,0);
mate->setMaterial(mate,MATERIAL_RUBY);
scene->drawCubeShader(transform);
transform->setIdentity();
transform->scale(1.0,1.0,1.0);
transform->translate(2,0,1);
mate->setMaterial(mate,MATERIAL_TURQUOSIE);
scene->drawCubeShader(transform);
transform->setIdentity();
//transform->scale(0.5,0.5,0.5);
//transform->setTranslate(Vec4(-1,0,2,1.0));
transform->scale(0.5,0.5,0.5);
transform->setRotationX(60);
transform->setRotationZ(60);
transform->setTranslate(Vec4(-1,0,2,1.0));
//transform->setRotationX(60);
//transform->setRotationZ(60);
mate->setMaterial(mate,MATERIAL_TURQUOSIE);
scene->drawCubeShader(transform);
// mate->setMaterial(mate,MATERIAL_EMERALD);
// scene->drawSphere(transform,mate);
transform->setIdentity();
transform->scale(25.0,1.0,25.0);
transform->translate(0.0,-0.5,0.0);
mate->setMaterial(mate,MATERIAL_GOLD);
scene->drawPlaneShader(transform);
delete transform;
delete mate;
}
void GLWidget::renderSceneWithShadow()
{
Matrix4x4 *transform = new Matrix4x4();
MaterialObj* mate = new MaterialObj();
mate->setMaterial(mate,MATERIAL_RUBY);
//transform->scale(0.5,0.5,0.5);
transform->setIdentity();
// scene->drawCylinder(transform,mate);
// transform->setIdentity();
// transform->scale(2,1.0,1.5);
// transform->translate(-2,1,0);
transform->setIdentity();
transform->scale(1.0,1.0,1.0);
transform->translate(0,1.5,0);
mate->setMaterial(mate,MATERIAL_RUBY);
scene->drawCubeShader2(transform,mate);
transform->setIdentity();
transform->scale(1.0,1.0,1.0);
transform->translate(2,0,1);
mate->setMaterial(mate,MATERIAL_TURQUOSIE);
scene->drawCubeShader2(transform,mate);
transform->setIdentity();
transform->scale(0.5,0.5,0.5);
transform->setRotationX(60);
transform->setRotationZ(60);
transform->setTranslate(Vec4(-1,0,2,1.0));
//transform->setRotationX(60.f);
//transform->setRotationZ(60);
mate->setMaterial(mate,MATERIAL_TURQUOSIE);
scene->drawCubeShader2(transform,mate);
// mate->setMaterial(mate,MATERIAL_EMERALD);
// scene->drawSphere(transform,mate);
transform->setIdentity();
transform->scale(25.0,1.0,25.0);
transform->translate(0.0,-0.5,0.0);
mate->setMaterial(mate,MATERIAL_GOLD);
scene->drawPlaneShader2(transform,mate);
delete transform;
delete mate;
}