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