//1999-02-19，鲍捷，阴影效果
BOOL VPicEx::DropShadow()
{
imgdes *srcimg=GetImgDes();
imgdes tmpsrc, tmpmask;
int rcode = NO_ERROR, j,
shadow_width=20,
shadow_height=20,
cols, rows;
cols = CALC_WIDTH(srcimg);
rows = CALC_HEIGHT(srcimg);
allocimage(&tmpsrc, cols, rows, srcimg->bmh->biBitCount);
allocimage(&tmpmask, cols, rows, srcimg->bmh->biBitCount);
zeroimage(255, &tmpsrc);
tmpsrc.stx=shadow_width;
tmpsrc.sty=shadow_width;
copyimage(srcimg, &tmpsrc);
tmpsrc.stx = 0;
tmpsrc.sty = 0;
kodalith(230, &tmpsrc, &tmpsrc);//二值化，门限230
//门限以上的像素被认为白色，不产生阴影
negative(&tmpsrc, &tmpmask);
changebright(128, &tmpsrc, &tmpsrc);
for(j=0; j<10; j++)
blur(&tmpsrc, &tmpsrc);
//使阴影模糊。循环越多越模糊，扩散越大
tmpmask.stx=shadow_width;
tmpmask.sty=shadow_width;
addimage(&tmpsrc, &tmpmask, &tmpsrc);
andimage(srcimg, &tmpsrc, srcimg);
freeimage(&tmpmask);
freeimage(&tmpsrc);
return(rcode == NO_ERROR);
}
//1999-02-09，鲍捷，浮雕效果
//只对灰度图像有效
BOOL VPicEx::TrueEmboss()
{
if( !IsValid() ) return FALSE;
imgdes *srcimg=GetImgDes();
// colortogray(srcimg,srcimg);
imgdes image1;
imgdes image2;
imgdes tmpsrc;
int cols, rows, rcode;
char kern1[10] = {-2,-2,0,-2,6,0,0,0,0,1};
char kern2[10] = {0,0,0,0,-6,2,0,2,2,1};
cols = CALC_WIDTH(srcimg);
rows = CALC_HEIGHT(srcimg);
allocimage(&tmpsrc, cols, rows, 8); // Assumes 8-bit source image
copyimage(srcimg, &tmpsrc);
allocimage(&image1, cols, rows, 8);
allocimage(&image2, cols, rows, 8);
matrixconv(kern1, &tmpsrc, &image1);
matrixconv(kern2, &tmpsrc, &image2);
zeroimage(128, &tmpsrc);
addimage(&tmpsrc, &image1, &tmpsrc);
subimage(&tmpsrc, &image2, &tmpsrc);
rcode = copyimage(&tmpsrc, srcimg); // Assumes 8-bit result image
freeimage(&image2);
freeimage(&image1);
freeimage(&tmpsrc);
return(rcode == NO_ERROR);
}
bool PageScene::init()
{
bool bRet = false;
do
{
CC_BREAK_IF(!CCLayer::init());
//add close button
CCMenuItemImage* pCloseItem = CCMenuItemImage::create(
"CloseNormal.png",
"CloseSelected.png",
this,
menu_selector(PageScene::menuCloseCallback));
CC_BREAK_IF(!pCloseItem);
pCloseItem->setPosition(ccp(CCDirector::sharedDirector()->getWinSize().width - 20, 20));
CCMenu* pMenu = CCMenu::create(pCloseItem, NULL);
CC_BREAK_IF(!pMenu);
pMenu->setPosition(CCPointZero);
this->addChild(pMenu, 1);
//add words
CCLabelTTF* pLabel = CCLabelTTF::create("PageScene", "Arial", 24);
CC_BREAK_IF(!pLabel);
CCSize size = CCDirector::sharedDirector()->getWinSize();
pLabel->setPosition(ccp(size.width / 2, size.height - 50));
this->addChild(pLabel, 1);
addimage();
bRet = true;
}while(0);
return bRet;
}
