/*
 *  main.cpp
 *  CompFormApp
 *
 */

#include "Shape.h"

float	mouseX = 0;
float	mouseY = 0;
int		windowW = 800;
int		windowH = 600;

#define PI 3.14159265358979

void drawCircle(float radius, int numOfPts, Vec2d center){
	
	Circle circ(radius, numOfPts, center);
	circ.draw();
}

void drawOval(float vRadius, float hRadius, int numOfPts, Vec2d center){
	Oval ov(vRadius, hRadius, numOfPts, center);

	ov.draw();
}

void displayFunc ( void )
{
	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
	
	glColor3f( 1,0,0 );
	glRectf( mouseX-5, mouseY-5, mouseX+5, mouseY+5 );
	
	// place your drawing code here
	
	int ovalVert = 100;
	int incr = 10;
	
	Vec2d center(10,400);
	
	for(int vert = ovalVert; vert > 0; vert -= incr){
		int horz = ovalVert + incr - vert;
		drawOval(horz, vert, 30, center);
		printf("x:%i y:%i\n", horz, vert);
		center.x += horz * 2 + incr;
	}
	
	glutPostRedisplay();
	glutSwapBuffers();
}


void reshapeFunc ( int w, int h )
{
	windowW = w;
	windowH = h;

	glViewport( 0, 0, w, h );
	glMatrixMode( GL_PROJECTION );
	glLoadIdentity();
	gluOrtho2D( 0,w,0,h );

	glMatrixMode( GL_MODELVIEW );
	glLoadIdentity();
}


void mouseDownFunc ( int button, int state, int x, int y )
{
	mouseX = x;
	mouseY = windowH - y;
}


void mouseMoveFunc ( int x, int y )
{
	mouseX = x;
	mouseY = windowH - y;
}


void mouseDragFunc ( int x, int y )
{
	mouseX = x;
	mouseY = windowH - y;
}


void keyboardFunc ( unsigned char key, int x, int y )
{
}


void arrowKeyFunc ( int a_keys, int x, int y )
{
}


void init ( GLvoid )
{
	glShadeModel( GL_SMOOTH );
	glClearColor( 1.0, 1.0, 1.0, 1.0 );
	glEnable ( GL_COLOR_MATERIAL );
	glEnable( GL_BLEND );
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}

void testFunc(){
	Vec2d A(50,20);
	Vec2d B(20,50);
	Vec2d C;
	
	Vec2d D(100,100);	
	
	C = A - B;
	
//	A.print();
//	B.print();
//	C.print();
//
//	printf( "%f", D.length());
}

int main ( int argc, char** argv )
{
	testFunc();
	
	glutInit( &argc, argv );
	
	glutInitDisplayMode( GLUT_RGBA | GLUT_DOUBLE );
	glutInitWindowSize( windowW, windowH );
	glutCreateWindow( "CompFormApp" );
	glutDisplayFunc( displayFunc );
	glutReshapeFunc( reshapeFunc );
	glutMouseFunc( mouseDownFunc );
	glutMotionFunc( mouseDragFunc );
	glutPassiveMotionFunc( mouseMoveFunc );
	glutKeyboardFunc( keyboardFunc );
	glutSpecialFunc( arrowKeyFunc );
	init();
	
	glutMainLoop( );
  
	return 0;
}