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glwidget.cpp
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glwidget.cpp
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#include <QtGui>
#include <QtOpenGL>
#include <GL/glu.h>
#include <QString>
#include <QByteArray>
#include <math.h>
#include "glwidget.h"
#include "map.h"
#ifndef GL_MULTISAMPLE
#define GL_MULTISAMPLE 0x809D
#endif
//! [0]
GLWidget::GLWidget(QWidget *parent)
: QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
{
xRot = 1;
yRot = 1;
zRot = 1;
scale = 1;
angle = 1;
init_flag=false;
map = new Map;
}
GLWidget::~GLWidget()
{
delete map;
}
void GLWidget::setImage(Image* data){
map->setMap(data);
init_flag=false;
xRot=0;
yRot=0;
zRot=0;
xPos=0;
yPos=0;
zPos=0;
updateGL(); //
}
QSize GLWidget::minimumSizeHint() const
{
return QSize(50, 50);
}
QSize GLWidget::sizeHint() const
{
return QSize(500, 500);
}
void GLWidget::setScale(int zoom)
{
scale=zoom;
emit scaleChanged(zoom);
updateGL();
}
void GLWidget::setXPosition(int angle)
{
if (angle != xPos) {
xPos = angle;
emit xPositionChanged(angle);
updateGL();
}
}
void GLWidget::setYPosition(int angle)
{
if (angle != yPos) {
yPos = angle;
emit yPositionChanged(angle);
updateGL();
}
}
void GLWidget::setZPosition(int angle)
{
if (angle != zPos) {
zPos = angle;
emit zPositionChanged(angle);
updateGL();
}
}
void GLWidget::initializeGL()
{
glShadeModel(GL_SMOOTH);
glClearColor(0.3f, 0.3f, 0.3f, 0.3f);
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
}
void GLWidget::setAngle(int a){
angle=a;
updateGL();
}
void coord (float *x,float *y, float xc, float yc, float angle, float r)
{ *x = r*cos(angle) + xc;
*y = r*sin(angle) + yc;
return;
}
void GLWidget::paintGL()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
glTranslatef(-xPos,-yPos,-zPos);
if(!init_flag){
init_flag=map->Init();
} else {
float xp= map->getMap()->sizeX / 2;
float zp=map->getMap()->sizeY / 2;
float x,z;
coord(&x,&z,xp,zp,scale/57.3,(xp/4.0));
gluLookAt(x, 255, z,xp,angle,zp, 0, 1, 0);
map->paint();
}
}
void GLWidget::resizeGL(int width, int height)
{
glViewport(0, 0, width, height); // Reset The Current Viewport And Perspective Transformation
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,4000.0f);
glMatrixMode(GL_MODELVIEW);
}
void GLWidget::clean(){
map->clean();
init_flag=false;
xRot=0;
yRot=0;
zRot=0;
xPos=0;
yPos=0;
zPos=0;
updateGL(); //
}
void GLWidget::draw(int direction, int pos)
{
}