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main.cpp
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main.cpp
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#include <iostream>
#include "bezier1.h"
#include "primitive.h"
#include <iostream>
#include <algorithm>
#include <OpenGL/gl.h>
#include <OpenGL/glu.h>
#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif
#include "graphics.h"
using namespace std;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
vector<point> curve;
vector<point> control;
int wind_w=1200,wind_h=780;
bool flag_shift;
int i;
void key(unsigned char key,int x,int y){
if(key==32){
cout<<"Pressed"<<endl;
double a[(int)curve.size()+1];
double b[(int)curve.size()+1];
int count=0;
for(vector<point>::iterator it=curve.begin();it!=curve.end();it++)
{
a[count] = it->x;
b[count] = it->y;
printf("%lf %lf\n",a[count],b[count]);
count+=1;
}
func(a,b,count);
}
}
void init() {
//intializing the display window
glutInitWindowPosition(-1,-1);
glutInitWindowSize(wind_w ,wind_h); //The resolution of the output Window
glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH);
glutCreateWindow("Bezier Curve");
glClearColor(1.0,1.0,1.0,1.0f); //the screen is cleared and the screen is made opaque
glColor3f(1.0,1.0,1.0);
glViewport(0, 0, wind_w, wind_h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, wind_w,wind_h,0, 0, 1);
}
void disp()
{
glPointSize(4);
glClearColor(1.0f,1.0f, 1.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor3f(1.0f, 0.0f, 0.0f); //choose red color
//glFrontFace(GL_CW);
if(control.size()!=0)
{
curve.clear();
for(double t=0;t<=1;t+=0.1)
{
point ans=bezier(control, t);
curve.push_back((ans));
}
}
glBegin(GL_LINE_STRIP);
for(vector<point>::iterator it=curve.begin();it!=curve.end();it++)
{
glVertex2f((GLfloat)it->x,(GLfloat) it->y);
//cout<<it->x<<" "<<it->y<<endl;
}
glEnd();
glBegin(GL_POINTS);
for(vector<point>::iterator it=control.begin();it!=control.end();it++)
{
glVertex2f((GLfloat)it->x, (GLfloat)it->y);
}
glEnd();
// glVertex2f(0.2f, -0.5f);
glutSwapBuffers();
//glFlush();
}
bool found(point x)
{
for(vector<point>::iterator it=control.begin();it!=control.end();it++)
if(*it==x)
return true;
return false;
}
void mouse(int button,int state,int x,int y)
{
int mod=glutGetModifiers();
//cout<<mod<<endl;
if(mod==GLUT_ACTIVE_SHIFT)
{
if(flag_shift)
{
i=-1;
flag_shift=false;
}
cout<<"Returning\n";
return;
}
if(button==GLUT_LEFT_BUTTON)
{
if(found(point((double)x, (double)y)))
{
return;
}
control.push_back(point((double)x, (double)y));
cout<<control.size()<<"<---Size after adding one pt\n";
}
else if(button==GLUT_RIGHT_BUTTON)
{
cout<<"Deleted\n";
for(vector<point>::iterator it=control.begin();it!=control.end();it++)
{
if((*it)==point(double(x),double(y)))
{
control.erase(it);
break;
}
}
//cout<<control.size()<<"<---Size after deleting one pt\n";
}
glutPostRedisplay();
}
void drag(int x,int y)
{
int n=control.size();
if(!flag_shift)
{
flag_shift=true;
for(i=0;i<n;i++)
{
if((control[i])==point(double(x),double(y)))
{
break;
}
}
}
if(i!=(n+1) && flag_shift)
{
//cout<<"Changing point\n";
control[i]=point(double(x),double(y));
cout<<control.size()<<"<---Size\n";
glutPostRedisplay();
}
else{
cout<<"No Point Selected\n";
}
}
int main(int argc,char **argv) {
flag_shift=false;
i=-1;
glutInit(&argc, argv);
init();
glutDisplayFunc(disp);
glutMouseFunc(mouse);
glutMotionFunc(drag);
glutKeyboardFunc(key);
glutMainLoop();
//cout<<ans.x<<" "<<ans.y<<endl;
}
#pragma GCC diagnostic pop