| 0,0 → 1,326 |
|---|
| /*! |
| \file Draw_Round.c |
| \author Mario Palomo <mpalomo@ihman.com> |
| \author Jose M. de la Huerga Fernández |
| \author Pepe González Mora |
| \date 05-2002 |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with this library; if not, write to the Free Foundation, |
| Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| /*Circle arcs*/ |
| #define SDL_DRAW_PUTPIXEL_CIRCLE_BPP(A, B, C) \ |
| *(##A##(##B##(Uint8*)super->pixels + (Ycenter-x)*super->pitch + \ |
| (Xcenter - corner)*SDL_DRAW_BPP)) = C##; \ |
| *(##A##(##B##(Uint8*)super->pixels + (Ycenter-corner)*super->pitch + \ |
| (Xcenter - x)*SDL_DRAW_BPP)) = C##; \ |
| *(##A##(##B##(Uint8*)super->pixels + (Ycenter-corner)*super->pitch + \ |
| (X2center + x)*SDL_DRAW_BPP)) = C##; \ |
| *(##A##(##B##(Uint8*)super->pixels + (Ycenter-x)*super->pitch + \ |
| (X2center + corner)*SDL_DRAW_BPP)) = C##; \ |
| *(##A##(##B##(Uint8*)super->pixels + (Y2center+corner)*super->pitch + \ |
| (X2center + x)*SDL_DRAW_BPP)) = C##; \ |
| *(##A##(##B##(Uint8*)super->pixels + (Y2center+x)*super->pitch + \ |
| (X2center + corner)*SDL_DRAW_BPP)) = C##; \ |
| *(##A##(##B##(Uint8*)super->pixels + (Y2center+corner)*super->pitch + \ |
| (Xcenter - x)*SDL_DRAW_BPP)) = C##; \ |
| *(##A##(##B##(Uint8*)super->pixels + (Y2center+x)*super->pitch + \ |
| (Xcenter - corner)*SDL_DRAW_BPP)) = C##; |
| |
| |
| #if SDL_DRAW_BPP == 1 |
| #define SDL_DRAW_PUTPIXEL_CIRCLE SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,0+,color) |
| |
| #elif SDL_DRAW_BPP == 2 |
| #define SDL_DRAW_PUTPIXEL_CIRCLE SDL_DRAW_PUTPIXEL_CIRCLE_BPP((Uint16*),0+,color) |
| |
| #elif SDL_DRAW_BPP == 3 |
| #define SDL_DRAW_PUTPIXEL_CIRCLE \ |
| SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,1+,colorbyte1) \ |
| if (SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ |
| SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,0+,colorbyte2) \ |
| SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,2+,colorbyte0) \ |
| }else{ \ |
| SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,0+,colorbyte0) \ |
| SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,2+,colorbyte2) \ |
| } |
| |
| #elif SDL_DRAW_BPP == 4 |
| #define SDL_DRAW_PUTPIXEL_CIRCLE SDL_DRAW_PUTPIXEL_CIRCLE_BPP((Uint32*),0+,color) |
| |
| #endif /*SDL_DRAW_BPP*/ |
| |
| |
| /*Rectangles*/ |
| #if SDL_DRAW_BPP == 1 |
| #define SDL_DRAW_PUTPIXEL \ |
| memset(p0, color, dx); \ |
| memset(p1, color, dx); \ |
| \ |
| if (h<3) return; \ |
| p0 = (Uint8*)super->pixels + Ycenter*super->pitch + x0; \ |
| p1 = (Uint8*)super->pixels + Ycenter*super->pitch + x0+w-1; \ |
| i=dy; \ |
| switch( i % 4 ) { \ |
| do{ \ |
| case 0: \ |
| *p0 = color; p0+=super->pitch; \ |
| *p1 = color; p1+=super->pitch; \ |
| case 3: \ |
| *p0 = color; p0+=super->pitch; \ |
| *p1 = color; p1+=super->pitch; \ |
| case 2: \ |
| *p0 = color; p0+=super->pitch; \ |
| *p1 = color; p1+=super->pitch; \ |
| case 1: \ |
| *p0 = color; p0+=super->pitch; \ |
| *p1 = color; p1+=super->pitch; \ |
| }while( (i-=4) > 0 ); \ |
| } |
| |
| #elif SDL_DRAW_BPP == 2 |
| #define SDL_DRAW_PUTPIXEL \ |
| i=dx; \ |
| switch( i % 4 ) { \ |
| do{ \ |
| case 0: \ |
| *(Uint16*)p0 = color; p0+=2; \ |
| *(Uint16*)p1 = color; p1+=2; \ |
| case 3: \ |
| *(Uint16*)p0 = color; p0+=2; \ |
| *(Uint16*)p1 = color; p1+=2; \ |
| case 2: \ |
| *(Uint16*)p0 = color; p0+=2; \ |
| *(Uint16*)p1 = color; p1+=2; \ |
| case 1: \ |
| *(Uint16*)p0 = color; p0+=2; \ |
| *(Uint16*)p1 = color; p1+=2; \ |
| }while( (i-=4) > 0 ); \ |
| } \ |
| if (h<3) return; \ |
| p0 = (Uint8*)super->pixels + Ycenter*super->pitch + x0*2; \ |
| p1 = (Uint8*)super->pixels + Ycenter*super->pitch + (x0+w-1)*2; \ |
| i=dy; \ |
| switch( i % 4 ) { \ |
| do{ \ |
| case 0: \ |
| *(Uint16*)p0 = color; p0+=super->pitch; \ |
| *(Uint16*)p1 = color; p1+=super->pitch; \ |
| case 3: \ |
| *(Uint16*)p0 = color; p0+=super->pitch; \ |
| *(Uint16*)p1 = color; p1+=super->pitch; \ |
| case 2: \ |
| *(Uint16*)p0 = color; p0+=super->pitch; \ |
| *(Uint16*)p1 = color; p1+=super->pitch; \ |
| case 1: \ |
| *(Uint16*)p0 = color; p0+=super->pitch; \ |
| *(Uint16*)p1 = color; p1+=super->pitch; \ |
| }while( (i-=4) > 0 ); \ |
| } |
| |
| |
| #elif SDL_DRAW_BPP == 3 |
| #define SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| if (SDL_BYTEORDER == SDL_BIG_ENDIAN) { \ |
| p0[0] = colorbyte2; \ |
| p0[1] = colorbyte1; \ |
| p0[2] = colorbyte0; \ |
| p1[0] = colorbyte2; \ |
| p1[1] = colorbyte1; \ |
| p1[2] = colorbyte0; \ |
| } else { \ |
| p0[0] = colorbyte0; \ |
| p0[1] = colorbyte1; \ |
| p0[2] = colorbyte2; \ |
| p1[0] = colorbyte0; \ |
| p1[1] = colorbyte1; \ |
| p1[2] = colorbyte2; \ |
| } |
| |
| #define SDL_DRAW_PUTPIXEL \ |
| i=dx; \ |
| switch( i % 4 ) { \ |
| do{ \ |
| case 0: \ |
| SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| p0+=3; p1+=3; \ |
| case 3: \ |
| SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| p0+=3; p1+=3; \ |
| case 2: \ |
| SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| p0+=3; p1+=3; \ |
| case 1: \ |
| SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| p0+=3; p1+=3; \ |
| }while( (i-=4) > 0 ); \ |
| } \ |
| if (h<3) return; \ |
| p0 = (Uint8*)super->pixels + Ycenter*super->pitch + x0*3; \ |
| p1 = (Uint8*)super->pixels + Ycenter*super->pitch + (x0+w-1)*3; \ |
| i=dy; \ |
| switch( i % 4 ) { \ |
| do{ \ |
| case 0: \ |
| SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| p0+=super->pitch; p1+=super->pitch; \ |
| case 3: \ |
| SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| p0+=super->pitch; p1+=super->pitch; \ |
| case 2: \ |
| SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| p0+=super->pitch; p1+=super->pitch; \ |
| case 1: \ |
| SDL_DRAW_PUTPIXEL_BPP_3_AUX \ |
| p0+=super->pitch; p1+=super->pitch; \ |
| }while( (i-=4) > 0 ); \ |
| } |
| |
| |
| #elif SDL_DRAW_BPP == 4 |
| #ifdef __linux__ |
| #define SDL_DRAW_WMEMSET_START \ |
| if (sizeof(wchar_t) == sizeof(Uint32)) { \ |
| wmemset((wchar_t*)p0, color, dx); \ |
| wmemset((wchar_t*)p1, color, dx); \ |
| } else { |
| #define SDL_DRAW_WMEMSET_END } |
| #else |
| #define SDL_DRAW_WMEMSET_START |
| #define SDL_DRAW_WMEMSET_END |
| #endif |
| |
| #define SDL_DRAW_PUTPIXEL \ |
| SDL_DRAW_WMEMSET_START \ |
| i=dx; \ |
| switch( i % 4 ) { \ |
| do{ \ |
| case 0: \ |
| *(Uint32*)p0 = color; p0+=4; \ |
| *(Uint32*)p1 = color; p1+=4; \ |
| case 3: \ |
| *(Uint32*)p0 = color; p0+=4; \ |
| *(Uint32*)p1 = color; p1+=4; \ |
| case 2: \ |
| *(Uint32*)p0 = color; p0+=4; \ |
| *(Uint32*)p1 = color; p1+=4; \ |
| case 1: \ |
| *(Uint32*)p0 = color; p0+=4; \ |
| *(Uint32*)p1 = color; p1+=4; \ |
| }while( (i-=4) > 0 ); \ |
| } \ |
| SDL_DRAW_WMEMSET_END \ |
| if (h<3) return; \ |
| p0 = (Uint8*)super->pixels + Ycenter*super->pitch + x0*4; \ |
| p1 = (Uint8*)super->pixels + Ycenter*super->pitch + (x0+w-1)*4; \ |
| i=dy; \ |
| switch( i % 4 ) { \ |
| do{ \ |
| case 0: \ |
| *(Uint32*)p0 = color; p0+=super->pitch; \ |
| *(Uint32*)p1 = color; p1+=super->pitch; \ |
| case 3: \ |
| *(Uint32*)p0 = color; p0+=super->pitch; \ |
| *(Uint32*)p1 = color; p1+=super->pitch; \ |
| case 2: \ |
| *(Uint32*)p0 = color; p0+=super->pitch; \ |
| *(Uint32*)p1 = color; p1+=super->pitch; \ |
| case 1: \ |
| *(Uint32*)p0 = color; p0+=super->pitch; \ |
| *(Uint32*)p1 = color; p1+=super->pitch; \ |
| }while( (i-=4) > 0 ); \ |
| } |
| |
| #endif /*SDL_DRAW_BPP*/ |
| |
| |
| |
| void SDL_DRAWFUNCTION(SDL_Surface *super, |
| Sint16 x0,Sint16 y0, Uint16 w,Uint16 h, |
| Uint16 corner, Uint32 color) |
| { |
| #if SDL_DRAW_BPP == 3 |
| Uint8 colorbyte0 = (Uint8) (color & 0xff); |
| Uint8 colorbyte1 = (Uint8) ((color >> 8) & 0xff); |
| Uint8 colorbyte2 = (Uint8) ((color >> 16) & 0xff); |
| #endif |
| |
| register Uint8 *p0; |
| register Uint8 *p1; |
| register Sint16 i; |
| Sint16 dx, dy; |
| |
| Sint16 Xcenter, Ycenter, X2center, Y2center; |
| |
| Sint16 x = 0; |
| Sint16 rightInc = 6; |
| Sint16 d, diagonalInc; |
| |
| if (w==0 || h==0) return; |
| |
| /*TODO: We can do better :-)*/ |
| if (corner!=0) { |
| d = w<h ? w : h; |
| --corner; |
| if (corner!=0 && corner+2 >= d ) { |
| if (corner+2 == d) --corner; |
| else corner = 0; |
| } |
| } |
| |
| d = 3 - (corner<<1); |
| diagonalInc = 10 - (corner<<2); |
| |
| /*Rectangles*/ |
| dx = w - (corner<<1); |
| Xcenter = x0+corner; |
| dy = h - (corner<<1); |
| Ycenter = y0+corner; |
| |
| /*Centers*/ |
| X2center=Xcenter+dx-1; |
| Y2center=Ycenter+dy-1; |
| |
| p0 = (Uint8*)super->pixels + y0 * super->pitch + Xcenter*SDL_DRAW_BPP; |
| p1 = (Uint8*)super->pixels + (y0+h-1) * super->pitch + Xcenter*SDL_DRAW_BPP; |
| |
| SDL_DRAW_PUTPIXEL |
| |
| while (x < corner) { |
| |
| SDL_DRAW_PUTPIXEL_CIRCLE |
| |
| if (d >= 0) { |
| d += diagonalInc; |
| diagonalInc += 8; |
| --corner; |
| } else { |
| d += rightInc; |
| diagonalInc += 4; |
| } |
| rightInc += 4; |
| ++x; |
| }/*while*/ |
| |
| }/*Draw_Round*/ |
| |
| |
| #undef SDL_DRAW_PUTPIXEL |
| #undef SDL_DRAW_PUTPIXEL_CIRCLE |
| #undef SDL_DRAW_PUTPIXEL_CIRCLE_BPP |
| |
| #undef SDL_DRAW_WMEMSET_START |
| #undef SDL_DRAW_WMEMSET_END |
| |