/* 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 "stdio.h"#include "math.h"#include "chipmunk.h"cpFloatcpvlength(const cpVect v){	return sqrtf( cpvdot(v, v) );}cpFloatcpvlengthsq(const cpVect v){	return cpvdot(v, v);}cpVectcpvnormalize(const cpVect v){	return cpvmult( v, 1.0f/cpvlength(v) );}cpVectcpvforangle(const cpFloat a){	return cpv(cosf(a), sinf(a));}cpFloatcpvtoangle(const cpVect v){	return atan2f(v.y, v.x);}char*cpvstr(const cpVect v){	static char str[256];	sprintf(str, "(% .3f, % .3f)", v.x, v.y);	return str;}