Eigene Dateien/uni/visualisierung/vislu/bsp1/VisLu/VAxisAlignElement.cpp

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#include "VAxisAlignElement.h"
#include <iostream>
#include "V2Ddraw.h"
#include "corona.h"
#include "VCamera.h"
#include <GL/glew.h>
#include <GL/glut.h>
#include <math.h>

using namespace std;

VAxisAlignElement::VAxisAlignElement(int* width, int* height, unsigned int* fps, VCamera * cam):
        GUIelement(width,height,fps)
{
        this->offset = 40;
        this->x = offset+20; //(int)*(this->wwidth)*0.02;
        this->y = (int)*(this->wheight)-(offset+20); //*0.75;
        this->active = true;
        this->camera = cam;
        this->dragging = false;
}

VAxisAlignElement::~VAxisAlignElement(void)
{

}

void VAxisAlignElement::render() {
        glLineWidth(4);
        glEnable(GL_LINE_SMOOTH);
        glPushMatrix();
        
        glTranslatef(this->x,this->y,0.0f);
        
        camera->setRotation();

        glBegin(GL_LINES);
        //x
        glColor4f(1,0,0,1);
        glVertex3f(0.0f, 0.0f, 0.0f); // origin of the line
        glVertex3f(offset, 0.0f, 0.0f); // end point of the line

        //y
        glColor4f(0,1,0,1);
        glVertex3f(0.0f, 0.0f, 0.0f); // origin of the line
        glVertex3f(0.0f, -offset, 0.0f); // end point of the line

        //z
        glColor4f(0,0,1,1);
        glVertex3f(0.0f, 0.0f, 0.0f); // origin of the line
        glVertex3f(0.0f, 0.0f, offset); // end point of the line

        glEnd( );
        glPopMatrix();
        glDisable(GL_LINE_SMOOTH);
        glLineWidth(1);
}

void VAxisAlignElement::released(int x, int y) {
        if(!this->dragging) { //click
                //cout << "click" << endl;
                float pixels[3];
                GLint viewport[4];
                glGetIntegerv(GL_VIEWPORT,viewport);
                glReadPixels(x,viewport[3]-y,1,1,GL_RGB,GL_FLOAT,pixels);
                if(pixels[0] == 1.0 && pixels[1] == 0.0 && pixels[2] == 0.0) {
                        //cout << "red" << endl;
                        this->camera->setAxisAlign(0);
                } else if(pixels[0] == 0.0 && pixels[1] == 1.0 && pixels[2] == 0.0) {
                        //cout << "green" << endl;
                        this->camera->setAxisAlign(1);
                } else if(pixels[0] == 0.0 && pixels[1] == 0.0 && pixels[2] == 1.0) {
                        //cout << "blue" << endl;
                        this->camera->setAxisAlign(2);
                }
        }
        this->dragging = false;
}

void VAxisAlignElement::drag(int,int) {
        this->dragging = true;
}

bool VAxisAlignElement::isInside(int xm, int ym) {
        return sqrt(pow((double)ym-this->y,2)+pow((double)xm-this->x,2)) < this->offset;
}

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