OE_pointcurve.cpp

/*
 * Copyright (c) 2015 Tricoire Sebastien 3dsman@free.fr
 *
 * This software is provided 'as-is', without any express or implied
 * warranty.  In no event will the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you must not
 * claim that you wrote the original software. If you use this software
 * in a product, an acknowledgment in the product documentation would be
 * appreciated but is not required.
 * 2. Altered source versions must be plainly marked as such, and must not be
 * misrepresented as being the original software.
 * 3. This notice may not be removed or altered from any source distribution.
 *
 */

#include "curves/OE_pointcurve.h"
#include "OE_utils.h"
#include <iostream>

#include <GL/gl.h>
#include <cstdlib>
#include <math.h>
#include <cstdio>
#include <cstring>
#include <algorithm>

unsigned char OE_pointcurve::controlLineColor[] = {100,60,92,255};
unsigned char OE_pointcurve::controlPointColor[] = {100,60,92,255};
 unsigned char OE_pointcurve::controlEndPointColor[] = {100,60,92,255};

OE_pointcurve::OE_pointcurve(){}

OE_pointcurve::OE_pointcurve(std::vector<vector_2d> points, bool closed)
{
    pts = points;
    this->closed = closed;				// Flag indicating if shapes should be treated as closed.
}

OE_pointcurve::~OE_pointcurve()
{
}

bool OE_pointcurve::getPoint(uint16_t nb, float* x, float* y)
{
    if ((pts.size())&&(nb<=pts.size()))
    {
        *x = pts.at(nb-1).x;
        *y = pts.at(nb-1).y;
        return true;
	}
	return false;
}

bool OE_pointcurve::getPoint(uint16_t nb, vector_2d& pt)
{
    if ((pts.size())&&(nb<=pts.size()))
    {
        pt.x = pts.at(nb-1).x;
        pt.y = pts.at(nb-1).y;
        return true;
	}
	return false;
}

bool OE_pointcurve::setPoint(uint16_t nb, float x, float y)
{
    if (nb<=pts.size())
    {
        pts[(nb-1)] = vector_2d(x,y);
		setNeedRefresh();
        return true;
	}
	return false;
}

bool OE_pointcurve::setPoint(uint16_t nb, vector_2d coord)
{
    if (nb<=pts.size())
    {
        pts[(nb-1)] = coord;
        setNeedRefresh();
        return true;
    }
    return false;
}

bool OE_pointcurve::addPoint( float x, float y)
{
	pts.push_back(vector_2d(x,y));
	setNeedRefresh();
	return true;
}

bool OE_pointcurve::addPoint( vector_2d pt)
{
	pts.push_back(pt);
	setNeedRefresh();
	return true;
}

void OE_pointcurve::lineTo(float x, float y)
{
	float px,py, dx,dy;
	if (pts.size() > 0) {

        getPoint(pts.size(), &px, &py);
		dx = x - px;
		dy = y - py;
		addPoint(px + dx/3.0f, py + dy/3.0f);
		addPoint(x - dx/3.0f, y - dy/3.0f);
		addPoint(x, y);
	}
}

void OE_pointcurve::lineTo(vector_2d pt)
{
	vector_2d p,d;
	if (pts.size() > 0) {

        getPoint(pts.size(), p);
		d = pt-p;
		
		addPoint(p + d/3.0f);
		addPoint(pt - d/3.0f);
		addPoint(pt);
	}
}


void OE_pointcurve::cubicBezTo(float cpx1, float cpy1, float cpx2, float cpy2, float x, float y)
{
	addPoint(cpx1, cpy1);
	addPoint(cpx2, cpy2);
	addPoint(x, y);
}