int RenderTargetBinder::getPixels(lua_State *L)
{
Binder binder(L);
GRenderTarget *renderTarget = static_cast<GRenderTarget*>(binder.getInstance("RenderTarget", 1));
int x = luaL_optinteger(L, 2, 0);
int y = luaL_optinteger(L, 3, 0);
unsigned int w = luaL_optinteger(L, 4, renderTarget->data->width);
unsigned int h = luaL_optinteger(L, 5, renderTarget->data->height);
size_t bsize=w*h*4;
void *buffer=malloc(bsize);
memset(buffer,0xFF,bsize);
if (x<0)
{
w=w+x;
x=0;
}
if (y<0)
{
h=h+y;
y=0;
}
if ((w>0)&&(h>0))
renderTarget->getPixels(x,y,w,h,buffer);
lua_pushlstring(L,(char *)buffer,bsize);
free(buffer);
return 1;
}
int RenderTargetBinder::getPixel(lua_State *L)
{
Binder binder(L);
GRenderTarget *renderTarget = static_cast<GRenderTarget*>(binder.getInstance("RenderTarget", 1));
int x = luaL_checkinteger(L, 2);
int y = luaL_checkinteger(L, 3);
unsigned char pixel[4]={0xFF,0xFF,0xFF,0xFF};
if ((x>=0)&&(y>=0))
renderTarget->getPixels(x,y,1,1,pixel);
lua_pushnumber(L,(pixel[0]<<16)|(pixel[1]<<8)|(pixel[2]<<0));
lua_pushnumber(L,((float)pixel[3])/255.0);
return 2;
}
