static CCSprite* createMaskSprite(CCLayerColor* base,
const std::vector<CCRect>& cutoutList)
{
CCSize winSize = CCDirector::sharedDirector()->getWinSize();
// CCRenderTexture* rt = CCRenderTexture::create(winSize.width, winSize.height);
// use a low-precision format
CCRenderTexture* rt = CCRenderTexture::create(winSize.width,
winSize.height,
kTexture2DPixelFormat_RGBA8888);
rt->setAnchorPoint(ccp(0, 0));
rt->setPosition(ccp(0, 0));
ccBlendFunc cutoutBlend = {GL_DST_ALPHA, GL_ZERO};
// render to texture
rt->begin();
base->visit();
CCSprite* s = CCSprite::create("ui/1x1_b.png");
s->setAnchorPoint(ccp(0, 0));
s->setOpacity(0);
for(const CCRect& cutout : cutoutList)
{
s->setPosition(cutout.origin);
s->setScaleX(cutout.size.width * contentScale());
s->setScaleY(cutout.size.height * contentScale());
s->setBlendFunc(cutoutBlend);
s->visit();
}
rt->end();
// render to texture done
std::string randName = std::string("mask_image_") + boost::lexical_cast<std::string>(rand());
CCImage* img = rt->newCCImage(false);
img->autorelease();
CCTexture2D* tex = CCTextureCache::sharedTextureCache()->addUIImage(img,
randName.c_str());
CCSprite *mask = CCSprite::createWithTexture(tex);
mask->setFlipY(true);
mask->setAnchorPoint(ccp(0, 0));
mask->setPosition(ccp(0, 0));
return mask;
}
CCTexture2D* Util::getGrayTexture(CCTexture2D* texture){
typedef enum {
RED = 0,
GREEN = 1,
BLUE = 2,
ALPHA = 3
} PIXELS;
CCSize textSize = texture->getContentSize();
CCSprite *temporarySprite = CCSprite::createWithTexture(texture);
//就这么一小句搞了我半天了，不过能出来也值了
temporarySprite->setAnchorPoint(ccp(0,0));
CCRenderTexture *rt = CCRenderTexture::create(textSize.width, textSize.height);
rt->begin();
temporarySprite->visit();
rt->end();
CCImage *image = rt->newCCImage();
unsigned char* pixels = image->getData();
int len = image->getDataLen();
uint32_t *p = (uint32_t *)pixels;
for(int i=0;i<len;i++){
uint8_t *rgbaPixel = (uint8_t *) &p[i];
//uint32_t gray = 0.3 * rgbaPixel[RED] + 0.59 * rgbaPixel[GREEN] + 0.11 * rgbaPixel[BLUE];
uint32_t gray = 1.2*rgbaPixel[RED] + 1.0*rgbaPixel[GREEN] + 0.0*rgbaPixel[BLUE];
// set the pixels to gray
rgbaPixel[RED] = gray;
rgbaPixel[GREEN] = gray;
rgbaPixel[BLUE] = gray;
}
CCTexture2D* newtexture = new CCTexture2D();
newtexture->autorelease();
newtexture->initWithImage(image);
image->release();
return newtexture;
}
CCSprite * BSAddStrokeToLabel(cocos2d::CCLabelTTF * label, float size, cocos2d::ccColor3B color, GLubyte opacity) {
CCPoint originalPos = label->getPosition();
ccColor3B originalColor = label->getColor();
GLubyte originalOpacity = label->getOpacity();
bool originalVisibility = label->isVisible();
ccBlendFunc originalBlend = label->getBlendFunc();
label->setColor(color);
label->setOpacity(opacity);
ccBlendFunc bf = {GL_SRC_ALPHA, GL_ONE};
label->setBlendFunc(bf);
CCPoint bottomLeft = ccp(label->getTexture()->getContentSize().width * label->getAnchorPoint().x + size,
label->getTexture()->getContentSize().height * label->getAnchorPoint().y + size);
CCRenderTexture* rt = CCRenderTexture::create(label->getTexture()->getContentSize().width + size * 2,
label->getTexture()->getContentSize().height + size * 2);
/* 在原始位置绘制文字，用于镂空用 */
label->setPosition(bottomLeft);
rt->begin();
label->visit();
rt->end();
CCImage * originText = rt->newCCImage();
glBlendEquation(GL_BLEND_EQUATION_ALPHA);
/* 在各个方向上移动文字，重叠得到未镂空的描边 */
rt->begin();
/* Bresenham's circle algorithm */
int radis = 3 * size;
for (int x = 0, y = radis, d = 3 - 2 * radis; x <= y; ++x) {
float xx = x / 3.0F, yy = y / 3.0F;
label->setPosition(ccp(bottomLeft.x + xx, bottomLeft.y + yy)); label->visit();
label->setPosition(ccp(bottomLeft.x - xx, bottomLeft.y + yy)); label->visit();
label->setPosition(ccp(bottomLeft.x + xx, bottomLeft.y - yy)); label->visit();
label->setPosition(ccp(bottomLeft.x - xx, bottomLeft.y - yy)); label->visit();
label->setPosition(ccp(bottomLeft.x + yy, bottomLeft.y + xx)); label->visit();
label->setPosition(ccp(bottomLeft.x - yy, bottomLeft.y + xx)); label->visit();
label->setPosition(ccp(bottomLeft.x + yy, bottomLeft.y - xx)); label->visit();
label->setPosition(ccp(bottomLeft.x - yy, bottomLeft.y - xx)); label->visit();
if (d < 0) {
d = d + 4 * x + 6;
} else {
d = d + 4 * (x - y) + 10;
y --;
}
}
rt->end();
/* TODO: ugly workaround. rendertexture多次绘制颜色叠加，需要取色值大的那个，需要通过glBlendEquation(GL_MAX)实现。
* see http://stackoverflow.com/questions/2143690/is-it-possible-to-achieve-maxas-ad-opengl-blending */
CCImage * strokedText = rt->newCCImage();
unsigned char * pStorke = strokedText->getData();
unsigned char * pErase = originText->getData();
for (int i = 0; i < strokedText->getDataLen(); ++i) {
if ((unsigned int) pErase[i * 4] != 0) {
*(unsigned int *) &pStorke[i * 4] = 0;
} else if ((unsigned int) pStorke[i * 4] != 0) {
unsigned char * pixel = &pStorke[i * 4];
(*pixel++) = color.r;
(*pixel++) = color.g;
(*pixel++) = color.b;
*pixel = opacity;
}
}
originText->release();
/* 用RenderTexture构造一个Sprite，以实现支持透明度 FadeIn FadeOut */
CCTexture2D * texture2D = new CCTexture2D();
texture2D->initWithImage(strokedText);
strokedText->release();
CCSprite * sprite = CCSprite::createWithTexture(texture2D);
texture2D->release();
label->setPosition(originalPos);
label->setColor(originalColor);
label->setBlendFunc(originalBlend);
label->setVisible(originalVisibility);
label->setOpacity(originalOpacity);
sprite->setPosition(ccp(label->getTexture()->getContentSize().width / 2, label->getTexture()->getContentSize().height / 2));
label->addChild(sprite, -1);
return sprite;
}
CCSprite* CCColorUtil::graylightWithCCSprite(CCSprite* oldSprite,bool isLight)
{
//CCSprite转成CCimage
CCPoint ptOldAnchor = oldSprite->getAnchorPoint();
CCPoint ptOld = oldSprite->getPosition();
oldSprite->setAnchorPoint(ccp(0,0));
oldSprite->setPosition(ccp(0,0));
CCRenderTexture *outTexture = CCRenderTexture::create((int)oldSprite->getContentSize().width*1,(int)oldSprite->getContentSize().height*1);
outTexture->begin();
oldSprite->visit();
outTexture->end();
oldSprite->setAnchorPoint(ptOldAnchor);
oldSprite->setPosition(ptOld);
CCImage* finalImage = outTexture->newCCImage();
unsigned char *pData = finalImage->getData();
int iIndex = 0;
if(isLight)
{
for (int i = 0; i < finalImage->getHeight(); i ++)
{
for (int j = 0; j < finalImage->getWidth(); j ++)
{
// highlight
int iHightlightPlus = 50;
int iBPos = iIndex;
unsigned int iB = pData[iIndex];
iIndex ++;
unsigned int iG = pData[iIndex];
iIndex ++;
unsigned int iR = pData[iIndex];
iIndex ++;
//unsigned int o = pData[iIndex];
iIndex ++; //原来的示例缺少
iB = (iB + iHightlightPlus > 255 ? 255 : iB + iHightlightPlus);
iG = (iG + iHightlightPlus > 255 ? 255 : iG + iHightlightPlus);
iR = (iR + iHightlightPlus > 255 ? 255 : iR + iHightlightPlus);
// iR = (iR < 0 ? 0 : iR);
// iG = (iG < 0 ? 0 : iG);
// iB = (iB < 0 ? 0 : iB);
pData[iBPos] = (unsigned char)iB;
pData[iBPos + 1] = (unsigned char)iG;
pData[iBPos + 2] = (unsigned char)iR;
}
}
}else{
for (int i = 0; i < finalImage->getHeight(); i ++)
{
for (int j = 0; j < finalImage->getWidth(); j ++)
{
// gray
int iBPos = iIndex;
unsigned int iB = pData[iIndex];
iIndex ++;
unsigned int iG = pData[iIndex];
iIndex ++;
unsigned int iR = pData[iIndex];
iIndex ++;
//unsigned int o = pData[iIndex];
iIndex ++; //原来的示例缺少
unsigned int iGray = 0.3 * iR + 0.4 * iG + 0.2 * iB;
pData[iBPos] = pData[iBPos + 1] = pData[iBPos + 2] = (unsigned char)iGray;
}
}
}
CCTexture2D *texture = new CCTexture2D;
texture->initWithImage(finalImage);
CCSprite* newSprite = CCSprite::createWithTexture(texture);
delete finalImage;
texture->release();
return newSprite;
}
CCRect GameUtil::getFitRect(CCSprite* pSprite)
{
// 원본의 원래위치 백업
CCPoint ptOrg = pSprite->getPosition();
// 원본 스프라이트 위치를 Center로 설정
pSprite->setPosition(ccp(pSprite->getContentSize().width/2, pSprite->getContentSize().height/2));
// CCImage를 만들기 위해서 RenderTexture 생성
CCRenderTexture * rtNew = CCRenderTexture::create((int)pSprite->getContentSize().width, (int)pSprite->getContentSize().height);
rtNew->begin();
pSprite->visit();
rtNew->end();
// CCImage 생성
CCImage *pImage = rtNew->newCCImage();
int width = pImage->getWidth();
int height = pImage->getHeight();
int bytesPerComponent = pImage->getBitsPerComponent() / 8; // 기본값 8bit
bool bAlpha = pImage->hasAlpha();
int nRGBA = 4;
if (!bAlpha)
nRGBA = 3;
// 픽셀 데이터 (RGBA 순서, 각각 bytesPerComponent 크기만큼)
unsigned char* pData = pImage->getData();
int index = 0;
int l=5000; // left
int r=0; // right
int t=5000; // top
int b=0; // bottom
unsigned char* ptr;
for (int x=0; x<width; x++) {
for (int y=0; y<height; y++) {
index = (y*width + x) * bytesPerComponent * nRGBA;
ptr = pData + index;
if (0 != ptr[0] || 0 != ptr[1] || 0 != ptr[2])
{
l = min(l, x); // left
r = max(r, x); // right
t = min(t, y); // top
b = max(b, y); // bottpm
}
}
}
// 좌표계 보정 (픽셀데이터는 좌상단을 0,0 으로 하기때문에)
int b2 = pSprite->getContentSize().height - t;
int t2 = pSprite->getContentSize().height - b;
CC_SAFE_DELETE(pImage);
// 원래 위치로 설정
pSprite->setPosition(ptOrg);
CCRect rc;
rc.origin.x = l;
rc.origin.y = t2;
rc.size.width = r - l;
rc.size.height = b2 - t2;
return rc;
}
CCSprite* GameUtil::fitSprite(CCSprite* pSprite)
{
// 원본의 원래위치 백업
CCPoint ptOrg = pSprite->getPosition();
// 원본 스프라이트 위치를 Center로 설정
pSprite->setPosition(ccp(pSprite->getContentSize().width/2, pSprite->getContentSize().height/2));
// CCImage를 만들기 위해서 RenderTexture 생성
CCRenderTexture * rtNew = CCRenderTexture::create((int)pSprite->getContentSize().width, (int)pSprite->getContentSize().height);
rtNew->begin();
pSprite->visit();
rtNew->end();
// CCImage 생성
CCImage *pImage = rtNew->newCCImage();
int width = pImage->getWidth();
int height = pImage->getHeight();
int bytesPerComponent = pImage->getBitsPerComponent() / 8; // 기본값 8bit
bool bAlpha = pImage->hasAlpha();
int nRGBA = 4;
if (!bAlpha)
nRGBA = 3;
// 픽셀 데이터 (RGBA 순서, 각각 bytesPerComponent 크기만큼)
unsigned char* pData = pImage->getData();
int index = 0;
int l=5000; // left
int r=0; // right
int t=0; // top
int b=5000; // bottom
unsigned char* ptr;
for (int x=0; x<width; x++) {
for (int y=0; y<height; y++) {
index = (y*width + x) * bytesPerComponent * nRGBA;
ptr = pData + index;
if (0 != ptr[0] || 0 != ptr[1] || 0 != ptr[2])
{
l = min(l, x); // left
r = max(r, x); // right
t = max(t, y); // top
b = min(b, y); // bottom
}
}
}
// 좌표계 보정 (픽셀데이터는 좌상단을 0,0 으로 하기때문에)
int b2 = pSprite->getContentSize().height - t;
int t2 = pSprite->getContentSize().height - b;
CC_SAFE_DELETE(pImage);
// 원래 위치로 설정
pSprite->setPosition(ptOrg);
// 스프라이트로 생성
CCSprite* pCrop = CCSprite::createWithTexture(pSprite->getTexture());
pCrop->setTextureRect(CCRect(l, b2, r-l, t2-b2));
pCrop->setPosition(ccp(pCrop->getContentSize().width/2, pCrop->getContentSize().height/2));
pCrop->setFlipY(true);
// 크기에 꼭 맞는 새로운 RenderTexture를 만든다.
CCRenderTexture * rtNew2 = CCRenderTexture::create(r-l, t2-b2);
rtNew2->begin();
pCrop->visit();
rtNew2->end();
// 크기에 꼭 맞는 새로운 Sprite를 만든다.
CCSprite *retSprite = CCSprite::createWithTexture(rtNew2->getSprite()->getTexture());
retSprite->setFlipY(true);
rtNew2->release();
pCrop->release();
return retSprite;
}
