cpConstraint.c

/* Copyright (c) 2007 Scott Lembcke
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <stdlib.h>
#include <assert.h>

#include "../chipmunk.h"
#include "util.h"

// TODO: Comment me!

cpFloat cp_constraint_bias_coef = 0.1f;

void cpConstraintDestroy(cpConstraint *constraint){}

void
cpConstraintFree(cpConstraint *constraint)
{
	if(constraint) cpConstraintDestroy(constraint);
	free(constraint);
}

void
cpConstraintCheckCast(cpConstraint *constraint, const cpConstraintClass *klass)
{
	assert(constraint->klass == klass); // Bad cpConstraint type in cast
}


// *** defined in util.h

void
cpConstraintInit(cpConstraint *constraint, const cpConstraintClass *klass, cpBody *a, cpBody *b)
{
	constraint->klass = klass;
	constraint->a = a;
	constraint->b = b;
	
	constraint->maxForce = INFINITY;
	constraint->biasCoef = cp_constraint_bias_coef;
	constraint->maxBias = INFINITY;
}