mirror of
https://github.com/vcmi/vcmi.git
synced 2024-12-24 22:14:36 +02:00
104 lines
2.9 KiB
C++
104 lines
2.9 KiB
C++
#include "stdafx.h"
|
|
#include "SDL_Extensions.h"
|
|
|
|
void CSDL_Ext::SDL_PutPixel(SDL_Surface *ekran, int x, int y, Uint8 R, Uint8 G, Uint8 B)
|
|
{
|
|
Uint8 *p = (Uint8 *)ekran->pixels + y * ekran->pitch + x * ekran->format->BytesPerPixel;
|
|
if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
|
|
{
|
|
p[0] = R;
|
|
p[1] = G;
|
|
p[2] = B;
|
|
}
|
|
else
|
|
{
|
|
p[0] = B;
|
|
p[1] = G;
|
|
p[2] = R;
|
|
}
|
|
SDL_UpdateRect(ekran, x, y, 1, 1);
|
|
}
|
|
|
|
///**************/
|
|
///Reverses the toRot surface by the vertical axis
|
|
///**************/
|
|
SDL_Surface * CSDL_Ext::rotate01(SDL_Surface * toRot)
|
|
{
|
|
SDL_Surface * first = SDL_CreateRGBSurface(toRot->flags, toRot->w, toRot->h, toRot->format->BitsPerPixel, toRot->format->Rmask, toRot->format->Gmask, toRot->format->Bmask, toRot->format->Amask);
|
|
SDL_Surface * ret = SDL_ConvertSurface(first, toRot->format, toRot->flags);
|
|
for(int i=0; i<ret->w; ++i)
|
|
{
|
|
for(int j=0; j<ret->h; ++j)
|
|
{
|
|
{
|
|
Uint8 *p = (Uint8 *)toRot->pixels + j * toRot->pitch + (ret->w - i - 1) * toRot->format->BytesPerPixel;
|
|
if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
|
|
{
|
|
SDL_PutPixel(ret, i, j, p[0], p[1], p[2]);
|
|
}
|
|
else
|
|
{
|
|
SDL_PutPixel(ret, i, j, p[2], p[1], p[0]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
SDL_FreeSurface(first);
|
|
return ret;
|
|
}
|
|
///**************/
|
|
///Rotates toRot surface by 90 degrees left
|
|
///**************/
|
|
SDL_Surface * CSDL_Ext::rotate02(SDL_Surface * toRot)
|
|
{
|
|
SDL_Surface * first = SDL_CreateRGBSurface(toRot->flags, toRot->h, toRot->w, toRot->format->BitsPerPixel, toRot->format->Rmask, toRot->format->Gmask, toRot->format->Bmask, toRot->format->Amask);
|
|
SDL_Surface * ret = SDL_ConvertSurface(first, toRot->format, toRot->flags);
|
|
for(int i=0; i<ret->w; ++i)
|
|
{
|
|
for(int j=0; j<ret->h; ++j)
|
|
{
|
|
{
|
|
Uint8 *p = (Uint8 *)toRot->pixels + i * toRot->pitch + j * toRot->format->BytesPerPixel;
|
|
if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
|
|
{
|
|
SDL_PutPixel(ret, i, j, p[0], p[1], p[2]);
|
|
}
|
|
else
|
|
{
|
|
SDL_PutPixel(ret, i, j, p[2], p[1], p[0]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
SDL_FreeSurface(first);
|
|
return ret;
|
|
}
|
|
|
|
///*************/
|
|
///Rotates toRot surface by 180 degrees
|
|
///*************/
|
|
SDL_Surface * CSDL_Ext::rotate03(SDL_Surface * toRot)
|
|
{
|
|
SDL_Surface * first = SDL_CreateRGBSurface(toRot->flags, toRot->w, toRot->h, toRot->format->BitsPerPixel, toRot->format->Rmask, toRot->format->Gmask, toRot->format->Bmask, toRot->format->Amask);
|
|
SDL_Surface * ret = SDL_ConvertSurface(first, toRot->format, toRot->flags);
|
|
for(int i=0; i<ret->w; ++i)
|
|
{
|
|
for(int j=0; j<ret->h; ++j)
|
|
{
|
|
{
|
|
Uint8 *p = (Uint8 *)toRot->pixels + (ret->h - j - 1) * toRot->pitch + (ret->w - i - 1) * toRot->format->BytesPerPixel;
|
|
if(SDL_BYTEORDER == SDL_BIG_ENDIAN)
|
|
{
|
|
SDL_PutPixel(ret, i, j, p[0], p[1], p[2]);
|
|
}
|
|
else
|
|
{
|
|
SDL_PutPixel(ret, i, j, p[2], p[1], p[0]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
SDL_FreeSurface(first);
|
|
return ret;
|
|
}
|