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update rotation support

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This commit is contained in:
fsender
2023-11-03 21:00:36 +08:00
parent 6fef19e3e0
commit b5d77bc054
2 changed files with 54 additions and 28 deletions
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81
examples/ex06_Image/guy_image.cpp
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@@ -44,26 +44,50 @@ uint8_t readguyImage::drawImgHandler(int r, LGFX_Sprite *spr){
spr->fillScreen(background?0xffff:0); //背景色填充白色
//spr->drawBmp(*baseFs,filename,x,y,std::min(w,spr->width()),std::min(h,_h),
//offsetx,offsety,scalex,scaley,datum);
int yr=y-r/stage*_h;
if(yr<_h){
int yd=0;
if(yr<0){
yd=-yr;
yr=0;
}
switch(format&3){
case 1:
spr->drawBmpFile(*baseFs,filename,x,yr,0,0,offsetx,offsety+yd,scalex,scaley,datum);
break;
case 2:
spr->drawPngFile(*baseFs,filename,x,yr,0,0,offsetx,offsety+yd,scalex,scaley,datum);
break;
case 3:
spr->drawJpgFile(*baseFs,filename,x,yr,0,0,offsetx,offsety+yd,scalex,scaley,datum);
break;
}
//offsetx,offsety,scalex,scaley);
int _x=0,_y=0,xd=0,yd=0;
uint8_t rot = guy->getRotation();
//uint8_t td=lgfx::v1::TL_DATUM; //top left for default
switch(rot){
case 0:
_x=x; xd=0;
_y=y-r/stage*_h;
if(_y<0){ yd=-_y; _y=0; }
break;
case 1:
//旋转之后, sprite为竖条. spr的width为_h. height为widthDiv8<<3(原sprite宽度)
//输入的x位置: 转化为_y位置: (widthDiv8<<3)-x-1
//输入的y位置: 转化为_x位置: _x=y. 限制: 分8块 分块: _x=y-r/stage*_h;
//_x=y-r/stage*_h; yd=0;
//_y=x;//(widthDiv8<<3)-x-1;
_x=x-r/stage*_h;
_y=y; yd=0;
if(_x<0){ xd=-_x; _x=0; }
break;
case 2:
_x=x; xd=0;
_y=y-(GUY_STAGES-r/stage-1)*_h;
if(_y<0){ yd=-_y; _y=0; }
break;
case 3:
_x=x-(GUY_STAGES-r/stage-1)*_h;
_y=y; yd=0;
if(_x<0){ xd=-_x; _x=0; }
break;
}
spr->setRotation(rot);
switch(format&3){
case 1:
spr->drawBmpFile(*baseFs,filename,_x,_y,0,0,offsetx+xd,offsety+yd,scalex,scaley,datum);
break;
case 2:
spr->drawPngFile(*baseFs,filename,_x,_y,0,0,offsetx+xd,offsety+yd,scalex,scaley,datum);
break;
case 3:
spr->drawJpgFile(*baseFs,filename,_x,_y,0,0,offsetx+xd,offsety+yd,scalex,scaley,datum);
break;
}
spr->setRotation(0);
//spr->setTextColor(0u,colors[r/stage]);//for debug
//spr->drawString("Hello",0,0);//for debug
/*此函数将会把图片文件绘制到这个灰度图里面.
@@ -200,14 +224,15 @@ void readguyImage::drawImageFile(bool use16grey){
//Serial.printf("filename: %s, exname: %s\n",filename,ex);
//图片将会分割成8个部分, 分块绘制, 节省内存.
int _w=(guy->memWidth()+7)&0x7ffffff8; //guy->guyMemoryWidth() 返回不随旋转参数而改变的显示内存宽度
if(!_w) return; //保证宽度>0
w=(guy->memWidth()+7)&0x7ffffff8; //guy->guyMemoryWidth() 返回不随旋转参数而改变的显示内存宽度
if(!w) return; //保证宽度>0
h=guy->memHeight();
if(exPoolSize>guy->bufferLength()){ //当外部缓存的像素超过屏幕缓存时,使用外部缓存作为主缓冲区
_h=exPoolSize/_w;
_h=exPoolSize/w;
_pool=exPool;
}
if(_pool==nullptr) {
_h=(guy->memHeight()+7)>>3; //设置缓存区的高度. 更多内存将可以更快显示
_h=(h+7)>>3; //设置缓存区的高度. 更多内存将可以更快显示
_pool=(uint8_t *)guy->getBuffer();
}
//(guy->guyMemoryHeight()+7)>>3 返回高度,并补齐后右移三位 (等效于除以2³, 分成8份)
@@ -216,7 +241,7 @@ void readguyImage::drawImageFile(bool use16grey){
LGFX_Sprite bmpspr;
//首先, 需要获取到内部显存的地址, 用于建立图片分块绘制缓存.
//获取屏幕缓存, 随后分配图片解码所需的内存.
bmpspr.setBuffer(_pool,_w,_h,lgfx::v1::color_depth_t::grayscale_8bit);
bmpspr.setBuffer(_pool,w,_h,lgfx::v1::color_depth_t::grayscale_8bit);
//bmpspr.createSprite(guy_width,(guy_height+7)&0x7ffffff8);
//必须在此处转化为8bit灰度 (256等阶)
@@ -230,10 +255,10 @@ void readguyImage::drawImageFile(bool use16grey){
else if(strcmp(ex,"jpg") == 0 || strcmp(ex,"JPG") == 0 || strcmp(ex,"jpeg") == 0 || strcmp(ex,"JPEG") == 0)
format|=3; //JPG格式
else return; //未知格式
//bmpspr.drawBmp(*baseFs,filename,x,y,w,h,offsetx,offsety,scalex,scaley,datum);
floyd = new int16_t[_w<<1];
readBuff = new uint8_t[_w];
writeBuff = new uint8_t[_w>>3];
//bmpspr.drawBmp(*baseFs,filename,x,y,w,h,offsetx,offsety,scalex,scaley);
floyd = new int16_t[w<<1];
readBuff = new uint8_t[w];
writeBuff = new uint8_t[w>>3];
//guy->display([](int)->uint8_t{ return 0xff; },true);
if(use16grey){