mirror of https://github.com/axmolengine/axmol.git
442 lines
12 KiB
C++
442 lines
12 KiB
C++
/*
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* Copyright (c) 2010-2012 cocos2d-x.org
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* cocos2d for iPhone: http://www.cocos2d-iphone.org
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*
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* Copyright (c) 2008 Radu Gruian
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*
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* Copyright (c) 2011 Vit Valentin
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*
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* Orignal code by Radu Gruian: http://www.codeproject.com/Articles/30838/Overhauser-Catmull-Rom-Splines-for-Camera-Animatio.So
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*
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* Adapted to cocos2d-x by Vit Valentin
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*
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* Adapted from cocos2d-x to cocos2d-iphone by Ricardo Quesada
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*/
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#include "ccMacros.h"
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#include "support/CCPointExtension.h"
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#include "CCActionCatmullRom.h"
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using namespace std;
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NS_CC_BEGIN;
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/*
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* Implementation of CCPointArray
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*/
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CCPointArray* CCPointArray::arrayWithCapacity(unsigned int capacity)
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{
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CCPointArray* ret = new CCPointArray();
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if (ret)
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{
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if (ret->initWithCapacity(capacity))
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{
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ret->autorelease();
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}
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else
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{
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delete ret;
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ret = NULL;
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}
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}
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return ret;
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}
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bool CCPointArray::initWithCapacity(unsigned int capacity)
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{
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m_pControlPoints = new CCArray(capacity);
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return true;
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}
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CCObject* CCPointArray::copyWithZone(cocos2d::CCZone *zone)
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{
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CCArray *newArray = new CCArray();
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CCObject* pObj = NULL;
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CCARRAY_FOREACH(m_pControlPoints, pObj)
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{
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newArray->addObject(pObj);
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}
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CCPointArray *points = CCPointArray::arrayWithCapacity(10);
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points->retain();
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points->setControlPoints(newArray);
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newArray->release();
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return points;
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}
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CCPointArray::~CCPointArray()
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{
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CC_SAFE_RELEASE_NULL(m_pControlPoints);
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}
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CCPointArray::CCPointArray() :m_pControlPoints(NULL){}
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void CCPointArray::addControlPoint(CCPoint controlPoint)
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{
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// should create a new object of CCPoint
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// because developer always use this function like this
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// addControlPoint(ccp(x, y))
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// passing controlPoint is a temple object
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// and CCArray::addObject() will retain the passing object, so it
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// should be an object created in heap
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CCPoint *temp = new CCPoint(controlPoint.x, controlPoint.y);
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m_pControlPoints->addObject(temp);
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temp->release();
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}
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void CCPointArray::insertControlPoint(CCPoint &controlPoint, unsigned int index)
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{
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// should create a new object of CCPoint
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// because developer always use this function like this
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// insertControlPoint(ccp(x, y))
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// passing controlPoint is a temple object
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// and CCArray::insertObject() will retain the passing object, so it
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// should be an object created in heap
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CCPoint *temp = new CCPoint(controlPoint.x, controlPoint.y);
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m_pControlPoints->insertObject(temp, index);
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temp->release();
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}
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CCPoint CCPointArray::getControlPointAtIndex(unsigned int index)
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{
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index = MIN(m_pControlPoints->count()-1, MAX(index, 0));
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CCPoint point = *((CCPoint*)m_pControlPoints->objectAtIndex(index));
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return point;
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}
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void CCPointArray::replaceControlPoint(cocos2d::CCPoint &controlPoint, unsigned int index)
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{
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// should create a new object of CCPoint
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// because developer always use this function like this
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// replaceControlPoint(ccp(x, y))
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// passing controlPoint is a temple object
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// and CCArray::insertObject() will retain the passing object, so it
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// should be an object created in heap
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CCPoint *temp = new CCPoint(controlPoint.x, controlPoint.y);
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m_pControlPoints->replaceObjectAtIndex(index, temp);
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temp->release();
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}
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void CCPointArray::removeControlPointAtIndex(unsigned int index)
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{
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m_pControlPoints->removeObjectAtIndex(index);
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}
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unsigned int CCPointArray::count()
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{
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return m_pControlPoints->count();
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}
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CCPointArray* CCPointArray::reverse()
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{
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CCArray *newArray = new CCArray(m_pControlPoints->count());
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for (int i = m_pControlPoints->count()-1; i >= 0; --i)
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{
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newArray->addObject(m_pControlPoints->objectAtIndex(i));
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}
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CCPointArray *config = CCPointArray::arrayWithCapacity(0);
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config->setControlPoints(newArray);
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newArray->release();
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return config;
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}
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void CCPointArray::reverseInline()
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{
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unsigned int l = m_pControlPoints->count();
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for (unsigned int i = 0; i < l/2; ++i)
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{
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m_pControlPoints->exchangeObjectAtIndex(i, l-i-1);
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}
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}
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// CatmullRom Spline formula:
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CCPoint ccCardinalSplineAt(CCPoint &p0, CCPoint &p1, CCPoint &p2, CCPoint &p3, float tension, float t)
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{
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float t2 = t * t;
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float t3 = t2 * t;
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/*
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* Formula: s(-ttt + 2tt – t)P1 + s(-ttt + tt)P2 + (2ttt – 3tt + 1)P2 + s(ttt – 2tt + t)P3 + (-2ttt + 3tt)P3 + s(ttt – tt)P4
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*/
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float s = (1 - tension) / 2;
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float b1 = s * ((-t3 + (2 * t2)) - t); // s(-t3 + 2 t2 – t)P1
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float b2 = s * (-t3 + t2) + (2 * t3 - 3 * t2 + 1); // s(-t3 + t2)P2 + (2 t3 – 3 t2 + 1)P2
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float b3 = s * (t3 - 2 * t2 + t) + (-2 * t3 + 3 * t2); // s(t3 – 2 t2 + t)P3 + (-2 t3 + 3 t2)P3
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float b4 = s * (t3 - t2); // s(t3 – t2)P4
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float x = (p0.x*b1 + p1.x*b2 + p2.x*b3 + p3.x*b4);
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float y = (p0.y*b1 + p1.y*b2 + p2.y*b3 + p3.y*b4);
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return ccp(x,y);
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}
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/* Implementation of CCCardinalSplineTo
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*/
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CCCardinalSplineTo* CCCardinalSplineTo::actionWithDuration(float duration, cocos2d::CCPointArray *points, float tension)
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{
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CCCardinalSplineTo *ret = new CCCardinalSplineTo();
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if (ret)
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{
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if (ret->initWithDuration(duration, points, tension))
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{
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ret->autorelease();
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}
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else
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{
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CC_SAFE_RELEASE_NULL(ret);
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}
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}
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return ret;
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}
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bool CCCardinalSplineTo::initWithDuration(float duration, cocos2d::CCPointArray *points, float tension)
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{
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CCAssert(points->count() > 0, "Invalid configuration. It must at least have one control point");
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if (CCActionInterval::initWithDuration(duration))
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{
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this->setPoints(points);
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this->m_fTension = tension;
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return true;
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}
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return false;
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}
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CCCardinalSplineTo::~CCCardinalSplineTo()
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{
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CC_SAFE_RELEASE_NULL(m_pPoints);
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}
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CCCardinalSplineTo::CCCardinalSplineTo()
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: m_pPoints(NULL)
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, m_fTension(0.f)
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, m_fDeltaT(0.f)
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{
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}
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void CCCardinalSplineTo::startWithTarget(cocos2d::CCNode *pTarget)
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{
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CCActionInterval::startWithTarget(pTarget);
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m_fDeltaT = (float) 1 / m_pPoints->count();
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}
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CCCardinalSplineTo* CCCardinalSplineTo::copyWithZone(cocos2d::CCZone *pZone)
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{
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CCCardinalSplineTo *copy = CCCardinalSplineTo::actionWithDuration(this->getDuration(), this->m_pPoints, this->m_fTension);
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return copy;
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}
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void CCCardinalSplineTo::update(float time)
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{
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unsigned int p;
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float lt;
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// border
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if (time == 1)
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{
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p = m_pPoints->count() - 1;
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lt = 1;
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}
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else
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{
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p = time / m_fDeltaT;
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lt = (time - m_fDeltaT * (float)p) / m_fDeltaT;
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}
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// Interpolate
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CCPoint pp0 = m_pPoints->getControlPointAtIndex(p-1);
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CCPoint pp1 = m_pPoints->getControlPointAtIndex(p+0);
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CCPoint pp2 = m_pPoints->getControlPointAtIndex(p+1);
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CCPoint pp3 = m_pPoints->getControlPointAtIndex(p+2);
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CCPoint newPos = ccCardinalSplineAt(pp0, pp1, pp2, pp3, m_fTension, lt);
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this->updatePosition(newPos);
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}
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void CCCardinalSplineTo::updatePosition(cocos2d::CCPoint &newPos)
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{
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m_pTarget->setPosition(newPos);
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}
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CCActionInterval* CCCardinalSplineTo::reverse()
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{
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CCPointArray *reverse = m_pPoints->reverse();
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return CCCardinalSplineTo::actionWithDuration(m_fDuration, reverse, m_fTension);
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}
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/* CCCardinalSplineBy
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*/
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CCCardinalSplineBy* CCCardinalSplineBy::actionWithDuration(float duration, cocos2d::CCPointArray *points, float tension)
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{
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CCCardinalSplineBy *ret = new CCCardinalSplineBy();
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if (ret)
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{
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if (ret->initWithDuration(duration, points, tension))
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{
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ret->autorelease();
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}
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else
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{
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CC_SAFE_RELEASE_NULL(ret);
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}
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}
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return ret;
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}
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CCCardinalSplineBy::CCCardinalSplineBy() : m_startPosition(0,0)
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{
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}
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void CCCardinalSplineBy::updatePosition(cocos2d::CCPoint &newPos)
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{
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m_pTarget->setPosition(ccpAdd(newPos, m_startPosition));
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}
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CCActionInterval* CCCardinalSplineBy::reverse()
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{
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CCPointArray *copyConfig = (CCPointArray*)m_pPoints->copy();
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//
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// convert "absolutes" to "diffs"
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//
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CCPoint p = copyConfig->getControlPointAtIndex(0);
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for (unsigned int i = 1; i < copyConfig->count(); ++i)
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{
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CCPoint current = copyConfig->getControlPointAtIndex(i);
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CCPoint diff = ccpSub(current, p);
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copyConfig->replaceControlPoint(diff, i);
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p = current;
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}
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// convert to "diffs" to "reverse absolute"
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CCPointArray *reverse = copyConfig->reverse();
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copyConfig->release();
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// 1st element (which should be 0,0) should be here too
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p = reverse->getControlPointAtIndex(reverse->count()-1);
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reverse->removeControlPointAtIndex(reverse->count()-1);
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p = ccpNeg(p);
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reverse->insertControlPoint(p, 0);
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for (unsigned int i = 1; i < reverse->count(); ++i)
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{
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CCPoint current = reverse->getControlPointAtIndex(i);
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current = ccpNeg(current);
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CCPoint abs = ccpAdd(current, p);
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reverse->replaceControlPoint(abs, i);
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p = abs;
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}
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return CCCardinalSplineBy::actionWithDuration(m_fDuration, reverse, m_fTension);
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}
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void CCCardinalSplineBy::startWithTarget(cocos2d::CCNode *pTarget)
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{
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CCCardinalSplineTo::startWithTarget(pTarget);
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m_startPosition = pTarget->getPosition();
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}
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/* CCCatmullRomTo
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*/
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CCCatmullRomTo* CCCatmullRomTo::actionWithDuration(float dt, cocos2d::CCPointArray *points)
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{
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CCCatmullRomTo *ret = new CCCatmullRomTo();
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if (ret)
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{
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if (ret->initWithDuration(dt, points))
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{
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ret->autorelease();
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}
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else
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{
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CC_SAFE_RELEASE_NULL(ret);
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}
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}
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return ret;
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}
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bool CCCatmullRomTo::initWithDuration(float dt, cocos2d::CCPointArray *points)
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{
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if (CCCardinalSplineTo::initWithDuration(dt, points, 0.5f))
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{
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return true;
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}
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return false;
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}
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/* CCCatmullRomBy
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*/
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CCCatmullRomBy* CCCatmullRomBy::actionWithDuration(float dt, cocos2d::CCPointArray *points)
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{
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CCCatmullRomBy *ret = new CCCatmullRomBy();
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if (ret)
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{
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if (ret->initWithDuration(dt, points))
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{
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ret->autorelease();
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}
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else
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{
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CC_SAFE_RELEASE_NULL(ret);
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}
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}
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return ret;
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}
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bool CCCatmullRomBy::initWithDuration(float dt, cocos2d::CCPointArray *points)
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{
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if (CCCardinalSplineTo::initWithDuration(dt, points, 0.5f))
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{
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return true;
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}
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return false;
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}
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NS_CC_END;
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