Mercurial > otakunoraifu
changeset 32:97b752b43502
* Removed SDL_rotozoom.{cc,h} (now uses SDL_gfx). TODO: improve configure.ac
| author | thib |
|---|---|
| date | Sat, 07 Mar 2009 21:56:18 +0000 |
| parents | 5ae5533b3a9a |
| children | f1fbe5b37a1e |
| files | Makefile.am window/Makefile.am window/SDL_rotozoom.cc window/SDL_rotozoom.h window/picture.cc |
| diffstat | 5 files changed, 4 insertions(+), 1042 deletions(-) [+] |
line wrap: on
line diff
--- a/Makefile.am +++ b/Makefile.am @@ -6,7 +6,7 @@ xclannad_SOURCES = xlovesys.cc xclannad_LDADD = system/libsystem.a scn2k/libscn2k.a window/libwindow.a \ font/libfont.a music2/libmusic.a \ - @LDFLAGS@ @FT2_LIBS@ @SDL_LIBS@ -lSDL_mixer @SMPEG_LIBS@ \ + @LDFLAGS@ @FT2_LIBS@ @SDL_LIBS@ -lSDL_mixer -lSDL_gfx @SMPEG_LIBS@ \ @X_LIBS@ @LIBS@ INCLUDES = @CFLAGS@ @DEFS@ @SDL_CFLAGS@
--- a/window/Makefile.am +++ b/window/Makefile.am @@ -1,7 +1,7 @@ noinst_LIBRARIES = libwindow.a libwindow_a_SOURCES = render.cc event.cc system.cc picture.cc widget.cc \ - button.cc menuitem.cc SDL_rotozoom.cc rect.cc \ - event.h menuitem.h picture.h rect.h SDL_rotozoom.h \ + button.cc menuitem.cc rect.cc \ + event.h menuitem.h picture.h rect.h \ surface.h system.h widget.h INCLUDES = @SDL_CFLAGS@
deleted file mode 100644 --- a/window/SDL_rotozoom.cc +++ /dev/null @@ -1,939 +0,0 @@ -/* - - SDL_rotozoom.c - rotozoomer for 32bit or 8bit surfaces - - LGPL (c) A. Schiffler - -*/ - -#ifdef WIN32 -#include <windows.h> -#endif - -#include <stdlib.h> -#include <string.h> - -#include "SDL_rotozoom.h" - -#define MAX(a,b) (((a) > (b)) ? (a) : (b)) - -/* - - 32bit Zoomer with optional anti-aliasing by bilinear interpolation. - - Zoomes 32bit RGBA/ABGR 'src' surface to 'dst' surface. - -*/ - -int zoomSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int smooth) -{ - int x, y, sx, sy, *sax, *say, *csax, *csay, csx, csy, ex, ey, t1, t2, sstep; - tColorRGBA *c00, *c01, *c10, *c11; - tColorRGBA *sp, *csp, *dp; - int sgap, dgap; - - /* - * Variable setup - */ - if (smooth) { - /* - * For interpolation: assume source dimension is one pixel - */ - /* - * smaller to avoid overflow on right and bottom edge. - */ - sx = (int) (65536.0 * (float) (src->w - 1) / (float) dst->w); - sy = (int) (65536.0 * (float) (src->h - 1) / (float) dst->h); - } else { - sx = (int) (65536.0 * (float) src->w / (float) dst->w); - sy = (int) (65536.0 * (float) src->h / (float) dst->h); - } - - /* - * Allocate memory for row increments - */ - if ((sax = (int *) malloc((dst->w + 1) * sizeof(Uint32))) == NULL) { - return (-1); - } - if ((say = (int *) malloc((dst->h + 1) * sizeof(Uint32))) == NULL) { - free(sax); - return (-1); - } - - /* - * Precalculate row increments - */ - csx = 0; - csax = sax; - for (x = 0; x <= dst->w; x++) { - *csax = csx; - csax++; - csx &= 0xffff; - csx += sx; - } - csy = 0; - csay = say; - for (y = 0; y <= dst->h; y++) { - *csay = csy; - csay++; - csy &= 0xffff; - csy += sy; - } - - /* - * Pointer setup - */ - sp = csp = (tColorRGBA *) src->pixels; - dp = (tColorRGBA *) dst->pixels; - sgap = src->pitch - src->w * 4; - dgap = dst->pitch - dst->w * 4; - - /* - * Switch between interpolating and non-interpolating code - */ - if (smooth) { - - /* - * Interpolating Zoom - */ - - /* - * Scan destination - */ - csay = say; - for (y = 0; y < dst->h; y++) { - /* - * Setup color source pointers - */ - c00 = csp; - c01 = csp; - c01++; - c10 = (tColorRGBA *) ((Uint8 *) csp + src->pitch); - c11 = c10; - c11++; - csax = sax; - for (x = 0; x < dst->w; x++) { - - /* - * Interpolate colors - */ - ex = (*csax & 0xffff); - ey = (*csay & 0xffff); - t1 = ((((c01->r - c00->r) * ex) >> 16) + c00->r) & 0xff; - t2 = ((((c11->r - c10->r) * ex) >> 16) + c10->r) & 0xff; - dp->r = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01->g - c00->g) * ex) >> 16) + c00->g) & 0xff; - t2 = ((((c11->g - c10->g) * ex) >> 16) + c10->g) & 0xff; - dp->g = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01->b - c00->b) * ex) >> 16) + c00->b) & 0xff; - t2 = ((((c11->b - c10->b) * ex) >> 16) + c10->b) & 0xff; - dp->b = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01->a - c00->a) * ex) >> 16) + c00->a) & 0xff; - t2 = ((((c11->a - c10->a) * ex) >> 16) + c10->a) & 0xff; - dp->a = (((t2 - t1) * ey) >> 16) + t1; - - /* - * Advance source pointers - */ - csax++; - sstep = (*csax >> 16); - c00 += sstep; - c01 += sstep; - c10 += sstep; - c11 += sstep; - /* - * Advance destination pointer - */ - dp++; - } - /* - * Advance source pointer - */ - csay++; - csp = (tColorRGBA *) ((Uint8 *) csp + (*csay >> 16) * src->pitch); - /* - * Advance destination pointers - */ - dp = (tColorRGBA *) ((Uint8 *) dp + dgap); - } - - } else { - - /* - * Non-Interpolating Zoom - */ - - csay = say; - for (y = 0; y < dst->h; y++) { - sp = csp; - csax = sax; - for (x = 0; x < dst->w; x++) { - /* - * Draw - */ - *dp = *sp; - /* - * Advance source pointers - */ - csax++; - sp += (*csax >> 16); - /* - * Advance destination pointer - */ - dp++; - } - /* - * Advance source pointer - */ - csay++; - csp = (tColorRGBA *) ((Uint8 *) csp + (*csay >> 16) * src->pitch); - /* - * Advance destination pointers - */ - dp = (tColorRGBA *) ((Uint8 *) dp + dgap); - } - - } - - /* - * Remove temp arrays - */ - free(sax); - free(say); - - return (0); -} - -/* - - 8bit Zoomer without smoothing. - - Zoomes 8bit palette/Y 'src' surface to 'dst' surface. - -*/ - -int zoomSurfaceY(SDL_Surface * src, SDL_Surface * dst) -{ - Uint32 x, y, sx, sy, *sax, *say, *csax, *csay, csx, csy; - Uint8 *sp, *dp, *csp; - int dgap; - - /* - * Variable setup - */ - sx = (Uint32) (65536.0 * (float) src->w / (float) dst->w); - sy = (Uint32) (65536.0 * (float) src->h / (float) dst->h); - - /* - * Allocate memory for row increments - */ - if ((sax = (Uint32 *) malloc(dst->w * sizeof(Uint32))) == NULL) { - return (-1); - } - if ((say = (Uint32 *) malloc(dst->h * sizeof(Uint32))) == NULL) { - if (sax != NULL) { - free(sax); - } - return (-1); - } - - /* - * Precalculate row increments - */ - csx = 0; - csax = sax; - for (x = 0; x < dst->w; x++) { - csx += sx; - *csax = (csx >> 16); - csx &= 0xffff; - csax++; - } - csy = 0; - csay = say; - for (y = 0; y < dst->h; y++) { - csy += sy; - *csay = (csy >> 16); - csy &= 0xffff; - csay++; - } - - csx = 0; - csax = sax; - for (x = 0; x < dst->w; x++) { - csx += (*csax); - csax++; - } - csy = 0; - csay = say; - for (y = 0; y < dst->h; y++) { - csy += (*csay); - csay++; - } - - /* - * Pointer setup - */ - sp = csp = (Uint8 *) src->pixels; - dp = (Uint8 *) dst->pixels; - dgap = dst->pitch - dst->w; - - /* - * Draw - */ - csay = say; - for (y = 0; y < dst->h; y++) { - csax = sax; - sp = csp; - for (x = 0; x < dst->w; x++) { - /* - * Draw - */ - *dp = *sp; - /* - * Advance source pointers - */ - sp += (*csax); - csax++; - /* - * Advance destination pointer - */ - dp++; - } - /* - * Advance source pointer (for row) - */ - csp += ((*csay) * src->pitch); - csay++; - /* - * Advance destination pointers - */ - dp += dgap; - } - - /* - * Remove temp arrays - */ - free(sax); - free(say); - - return (0); -} - -/* - - 32bit Rotozoomer with optional anti-aliasing by bilinear interpolation. - - Rotates and zoomes 32bit RGBA/ABGR 'src' surface to 'dst' surface. - -*/ - -void transformSurfaceRGBA(SDL_Surface * src, SDL_Surface * dst, int cx, int cy, int isin, int icos, int smooth) -{ - int x, y, t1, t2, dx, dy, xd, yd, sdx, sdy, ax, ay, ex, ey, sw, sh; - tColorRGBA c00, c01, c10, c11; - tColorRGBA *pc, *sp, *spb; - int gap; - - /* - * Variable setup - */ - xd = ((src->w - dst->w) << 15); - yd = ((src->h - dst->h) << 15); - ax = (cx << 16) - (icos * cx); - ay = (cy << 16) - (isin * cx); - sw = src->w - 1; - sh = src->h - 1; - pc = (tColorRGBA*)(dst->pixels); - gap = dst->pitch - dst->w * 4; - - /* - * Switch between interpolating and non-interpolating code - */ - if (smooth) { - for (y = 0; y < dst->h; y++) { - dy = cy - y; - sdx = (ax + (isin * dy)) + xd; - sdy = (ay - (icos * dy)) + yd; - for (x = 0; x < dst->w; x++) { - dx = (sdx >> 16); - dy = (sdy >> 16); - if ((dx >= -1) && (dy >= -1) && (dx < src->w) && (dy < src->h)) { - if ((dx >= 0) && (dy >= 0) && (dx < sw) && (dy < sh)) { - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy); - sp += dx; - c00 = *sp; - sp += 1; - c01 = *sp; - sp = (tColorRGBA *) ((Uint8 *) sp + src->pitch); - sp -= 1; - c10 = *sp; - sp += 1; - c11 = *sp; - } else if ((dx == sw) && (dy == sh)) { - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy); - sp += dx; - c00 = *sp; - c01 = *sp; - c10 = *sp; - c11 = *sp; - } else if ((dx == -1) && (dy == -1)) { - sp = (tColorRGBA *) (src->pixels); - c00 = *sp; - c01 = *sp; - c10 = *sp; - c11 = *sp; - } else if ((dx == -1) && (dy == sh)) { - sp = (tColorRGBA *) (src->pixels); - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy); - c00 = *sp; - c01 = *sp; - c10 = *sp; - c11 = *sp; - } else if ((dx == sw) && (dy == -1)) { - sp = (tColorRGBA *) (src->pixels); - sp += dx; - c00 = *sp; - c01 = *sp; - c10 = *sp; - c11 = *sp; - } else if (dx == -1) { - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy); - c00 = *sp; - c01 = *sp; - c10 = *sp; - sp = (tColorRGBA *) ((Uint8 *) sp + src->pitch); - c11 = *sp; - } else if (dy == -1) { - sp = (tColorRGBA *) (src->pixels); - sp += dx; - c00 = *sp; - c01 = *sp; - c10 = *sp; - sp += 1; - c11 = *sp; - } else if (dx == sw) { - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy); - sp += dx; - c00 = *sp; - c01 = *sp; - sp = (tColorRGBA *) ((Uint8 *) sp + src->pitch); - c10 = *sp; - c11 = *sp; - } else if (dy == sh) { - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy); - sp += dx; - c00 = *sp; - sp += 1; - c01 = *sp; - c10 = *sp; - c11 = *sp; - } - /* - * Interpolate colors - */ - ex = (sdx & 0xffff); - ey = (sdy & 0xffff); - t1 = ((((c01.r - c00.r) * ex) >> 16) + c00.r) & 0xff; - t2 = ((((c11.r - c10.r) * ex) >> 16) + c10.r) & 0xff; - pc->r = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01.g - c00.g) * ex) >> 16) + c00.g) & 0xff; - t2 = ((((c11.g - c10.g) * ex) >> 16) + c10.g) & 0xff; - pc->g = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01.b - c00.b) * ex) >> 16) + c00.b) & 0xff; - t2 = ((((c11.b - c10.b) * ex) >> 16) + c10.b) & 0xff; - pc->b = (((t2 - t1) * ey) >> 16) + t1; - t1 = ((((c01.a - c00.a) * ex) >> 16) + c00.a) & 0xff; - t2 = ((((c11.a - c10.a) * ex) >> 16) + c10.a) & 0xff; - pc->a = (((t2 - t1) * ey) >> 16) + t1; - } - sdx += icos; - sdy += isin; - pc++; - } - pc = (tColorRGBA *) ((Uint8 *) pc + gap); - } - } else { - for (y = 0; y < dst->h; y++) { - dy = cy - y; - sdx = (ax + (isin * dy)) + xd; - sdy = (ay - (icos * dy)) + yd; - for (x = 0; x < dst->w; x++) { - dx = (short) (sdx >> 16); - dy = (short) (sdy >> 16); - if ((dx >= 0) && (dy >= 0) && (dx < src->w) && (dy < src->h)) { - sp = (tColorRGBA *) ((Uint8 *) src->pixels + src->pitch * dy); - sp += dx; - *pc = *sp; - } - sdx += icos; - sdy += isin; - pc++; - } - pc = (tColorRGBA *) ((Uint8 *) pc + gap); - } - } -} - -/* - - 8bit Rotozoomer without smoothing - - Rotates and zoomes 8bit palette/Y 'src' surface to 'dst' surface. - -*/ - -void transformSurfaceY(SDL_Surface * src, SDL_Surface * dst, int cx, int cy, int isin, int icos) -{ - int x, y, dx, dy, xd, yd, sdx, sdy, ax, ay, sw, sh; - tColorY *pc, *sp; - int gap; - - /* - * Variable setup - */ - xd = ((src->w - dst->w) << 15); - yd = ((src->h - dst->h) << 15); - ax = (cx << 16) - (icos * cx); - ay = (cy << 16) - (isin * cx); - sw = src->w - 1; - sh = src->h - 1; - pc = (tColorY*)(dst->pixels); - gap = dst->pitch - dst->w; - /* - * Clear surface to colorkey - */ - memset(pc, (unsigned char) (src->format->colorkey & 0xff), dst->pitch * dst->h); - /* - * Iterate through destination surface - */ - for (y = 0; y < dst->h; y++) { - dy = cy - y; - sdx = (ax + (isin * dy)) + xd; - sdy = (ay - (icos * dy)) + yd; - for (x = 0; x < dst->w; x++) { - dx = (short) (sdx >> 16); - dy = (short) (sdy >> 16); - if ((dx >= 0) && (dy >= 0) && (dx < src->w) && (dy < src->h)) { - sp = (tColorY *) (src->pixels); - sp += (src->pitch * dy + dx); - *pc = *sp; - } - sdx += icos; - sdy += isin; - pc++; - } - pc += gap; - } -} - -/* - - rotozoomSurface() - - Rotates and zoomes a 32bit or 8bit 'src' surface to newly created 'dst' surface. - 'angle' is the rotation in degrees. 'zoom' a scaling factor. If 'smooth' is 1 - then the destination 32bit surface is anti-aliased. If the surface is not 8bit - or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly. - -*/ - -#define VALUE_LIMIT 0.001 - - -/* Local rotozoom-size function with trig result return */ - -void rotozoomSurfaceSizeTrig(int width, int height, double angle, double zoom, int *dstwidth, int *dstheight, - double *canglezoom, double *sanglezoom) -{ - double x, y, cx, cy, sx, sy; - double radangle; - int dstwidthhalf, dstheighthalf; - - /* - * Determine destination width and height by rotating a centered source box - */ - radangle = angle * (M_PI / 180.0); - *sanglezoom = sin(radangle); - *canglezoom = cos(radangle); - *sanglezoom *= zoom; - *canglezoom *= zoom; - x = width / 2; - y = height / 2; - cx = *canglezoom * x; - cy = *canglezoom * y; - sx = *sanglezoom * x; - sy = *sanglezoom * y; - dstwidthhalf = MAX((int) - ceil(MAX(MAX(MAX(fabs(cx + sy), fabs(cx - sy)), fabs(-cx + sy)), fabs(-cx - sy))), 1); - dstheighthalf = MAX((int) - ceil(MAX(MAX(MAX(fabs(sx + cy), fabs(sx - cy)), fabs(-sx + cy)), fabs(-sx - cy))), 1); - *dstwidth = 2 * dstwidthhalf; - *dstheight = 2 * dstheighthalf; -} - - -/* Publically available rotozoom-size function */ - -void rotozoomSurfaceSize(int width, int height, double angle, double zoom, int *dstwidth, int *dstheight) -{ - double dummy_sanglezoom, dummy_canglezoom; - - rotozoomSurfaceSizeTrig(width, height, angle, zoom, dstwidth, dstheight, &dummy_sanglezoom, &dummy_canglezoom); -} - - -/* Publically available rotozoom function */ - -SDL_Surface *rotozoomSurface(SDL_Surface * src, double angle, double zoom, int smooth) -{ - SDL_Surface *rz_src; - SDL_Surface *rz_dst; - double zoominv; - double sanglezoom, canglezoom, sanglezoominv, canglezoominv; - int dstwidthhalf, dstwidth, dstheighthalf, dstheight; - double x, y, cx, cy, sx, sy; - int is32bit; - int i, src_converted; - - /* - * Sanity check - */ - if (src == NULL) - return (NULL); - - /* - * Determine if source surface is 32bit or 8bit - */ - is32bit = (src->format->BitsPerPixel == 32); - if ((is32bit) || (src->format->BitsPerPixel == 8)) { - /* - * Use source surface 'as is' - */ - rz_src = src; - src_converted = 0; - } else { - /* - * New source surface is 32bit with a defined RGBA ordering - */ - rz_src = - SDL_CreateRGBSurface(SDL_SWSURFACE, src->w, src->h, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000); - SDL_BlitSurface(src, NULL, rz_src, NULL); - src_converted = 1; - is32bit = 1; - } - - /* - * Sanity check zoom factor - */ - if (zoom < VALUE_LIMIT) { - zoom = VALUE_LIMIT; - } - zoominv = 65536.0 / (zoom * zoom); - - /* - * Check if we have a rotozoom or just a zoom - */ - if (fabs(angle) > VALUE_LIMIT) { - - /* - * Angle!=0: full rotozoom - */ - /* - * ----------------------- - */ - - /* Determine target size */ - rotozoomSurfaceSizeTrig(rz_src->w, rz_src->h, angle, zoom, &dstwidth, &dstheight, &canglezoom, &sanglezoom); - - /* - * Calculate target factors from sin/cos and zoom - */ - sanglezoominv = sanglezoom; - canglezoominv = canglezoom; - sanglezoominv *= zoominv; - canglezoominv *= zoominv; - - /* Calculate half size */ - dstwidthhalf = dstwidth / 2; - dstheighthalf = dstheight / 2; - - /* - * Alloc space to completely contain the rotated surface - */ - rz_dst = NULL; - if (is32bit) { - /* - * Target surface is 32bit with source RGBA/ABGR ordering - */ - rz_dst = - SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight, 32, - rz_src->format->Rmask, rz_src->format->Gmask, - rz_src->format->Bmask, rz_src->format->Amask); - } else { - /* - * Target surface is 8bit - */ - rz_dst = SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight, 8, 0, 0, 0, 0); - } - - /* - * Lock source surface - */ - SDL_LockSurface(rz_src); - /* - * Check which kind of surface we have - */ - if (is32bit) { - /* - * Call the 32bit transformation routine to do the rotation (using alpha) - */ - transformSurfaceRGBA(rz_src, rz_dst, dstwidthhalf, dstheighthalf, - (int) (sanglezoominv), (int) (canglezoominv), smooth); - /* - * Turn on source-alpha support - */ - SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255); - } else { - /* - * Copy palette and colorkey info - */ - for (i = 0; i < rz_src->format->palette->ncolors; i++) { - rz_dst->format->palette->colors[i] = rz_src->format->palette->colors[i]; - } - rz_dst->format->palette->ncolors = rz_src->format->palette->ncolors; - /* - * Call the 8bit transformation routine to do the rotation - */ - transformSurfaceY(rz_src, rz_dst, dstwidthhalf, dstheighthalf, - (int) (sanglezoominv), (int) (canglezoominv)); - SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, rz_src->format->colorkey); - } - /* - * Unlock source surface - */ - SDL_UnlockSurface(rz_src); - - } else { - - /* - * Angle=0: Just a zoom - */ - /* - * -------------------- - */ - - /* - * Calculate target size - */ - zoomSurfaceSize(rz_src->w, rz_src->h, zoom, zoom, &dstwidth, &dstheight); - - /* - * Alloc space to completely contain the zoomed surface - */ - rz_dst = NULL; - if (is32bit) { - /* - * Target surface is 32bit with source RGBA/ABGR ordering - */ - rz_dst = - SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight, 32, - rz_src->format->Rmask, rz_src->format->Gmask, - rz_src->format->Bmask, rz_src->format->Amask); - } else { - /* - * Target surface is 8bit - */ - rz_dst = SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight, 8, 0, 0, 0, 0); - } - - /* - * Lock source surface - */ - SDL_LockSurface(rz_src); - /* - * Check which kind of surface we have - */ - if (is32bit) { - /* - * Call the 32bit transformation routine to do the zooming (using alpha) - */ - zoomSurfaceRGBA(rz_src, rz_dst, smooth); - /* - * Turn on source-alpha support - */ - SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255); - } else { - /* - * Copy palette and colorkey info - */ - for (i = 0; i < rz_src->format->palette->ncolors; i++) { - rz_dst->format->palette->colors[i] = rz_src->format->palette->colors[i]; - } - rz_dst->format->palette->ncolors = rz_src->format->palette->ncolors; - /* - * Call the 8bit transformation routine to do the zooming - */ - zoomSurfaceY(rz_src, rz_dst); - SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, rz_src->format->colorkey); - } - /* - * Unlock source surface - */ - SDL_UnlockSurface(rz_src); - } - - /* - * Cleanup temp surface - */ - if (src_converted) { - SDL_FreeSurface(rz_src); - } - - /* - * Return destination surface - */ - return (rz_dst); -} - -/* - - zoomSurface() - - Zoomes a 32bit or 8bit 'src' surface to newly created 'dst' surface. - 'zoomx' and 'zoomy' are scaling factors for width and height. If 'smooth' is 1 - then the destination 32bit surface is anti-aliased. If the surface is not 8bit - or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly. - -*/ - -#define VALUE_LIMIT 0.001 - -void zoomSurfaceSize(int width, int height, double zoomx, double zoomy, int *dstwidth, int *dstheight) -{ - /* - * Sanity check zoom factors - */ - if (zoomx < VALUE_LIMIT) { - zoomx = VALUE_LIMIT; - } - if (zoomy < VALUE_LIMIT) { - zoomy = VALUE_LIMIT; - } - - /* - * Calculate target size - */ - *dstwidth = (int) ((double) width * zoomx); - *dstheight = (int) ((double) height * zoomy); - if (*dstwidth < 1) { - *dstwidth = 1; - } - if (*dstheight < 1) { - *dstheight = 1; - } -} - -SDL_Surface *zoomSurface(SDL_Surface * src, double zoomx, double zoomy, int smooth) -{ - SDL_Surface *rz_src; - SDL_Surface *rz_dst; - int dstwidth, dstheight; - int is32bit; - int i, src_converted; - - /* - * Sanity check - */ - if (src == NULL) - return (NULL); - - /* - * Determine if source surface is 32bit or 8bit - */ - is32bit = (src->format->BitsPerPixel == 32); - if ((is32bit) || (src->format->BitsPerPixel == 8)) { - /* - * Use source surface 'as is' - */ - rz_src = src; - src_converted = 0; - } else { - /* - * New source surface is 32bit with a defined RGBA ordering - */ - rz_src = - SDL_CreateRGBSurface(SDL_SWSURFACE, src->w, src->h, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000); - SDL_BlitSurface(src, NULL, rz_src, NULL); - src_converted = 1; - is32bit = 1; - } - - /* Get size if target */ - zoomSurfaceSize(rz_src->w, rz_src->h, zoomx, zoomy, &dstwidth, &dstheight); - - /* - * Alloc space to completely contain the zoomed surface - */ - rz_dst = NULL; - if (is32bit) { - /* - * Target surface is 32bit with source RGBA/ABGR ordering - */ - rz_dst = - SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight, 32, - rz_src->format->Rmask, rz_src->format->Gmask, - rz_src->format->Bmask, rz_src->format->Amask); - } else { - /* - * Target surface is 8bit - */ - rz_dst = SDL_CreateRGBSurface(SDL_SWSURFACE, dstwidth, dstheight, 8, 0, 0, 0, 0); - } - - /* - * Lock source surface - */ - SDL_LockSurface(rz_src); - /* - * Check which kind of surface we have - */ - if (is32bit) { - /* - * Call the 32bit transformation routine to do the zooming (using alpha) - */ - zoomSurfaceRGBA(rz_src, rz_dst, smooth); - /* - * Turn on source-alpha support - */ - SDL_SetAlpha(rz_dst, SDL_SRCALPHA, 255); - } else { - /* - * Copy palette and colorkey info - */ - for (i = 0; i < rz_src->format->palette->ncolors; i++) { - rz_dst->format->palette->colors[i] = rz_src->format->palette->colors[i]; - } - rz_dst->format->palette->ncolors = rz_src->format->palette->ncolors; - /* - * Call the 8bit transformation routine to do the zooming - */ - zoomSurfaceY(rz_src, rz_dst); - SDL_SetColorKey(rz_dst, SDL_SRCCOLORKEY | SDL_RLEACCEL, rz_src->format->colorkey); - } - /* - * Unlock source surface - */ - SDL_UnlockSurface(rz_src); - - /* - * Cleanup temp surface - */ - if (src_converted) { - SDL_FreeSurface(rz_src); - } - - /* - * Return destination surface - */ - return (rz_dst); -}
deleted file mode 100644 --- a/window/SDL_rotozoom.h +++ /dev/null @@ -1,99 +0,0 @@ - -/* - - SDL_rotozoom - rotozoomer - - LGPL (c) A. Schiffler - -*/ - -#ifndef _SDL_rotozoom_h -#define _SDL_rotozoom_h - -#include <math.h> - -/* Set up for C function definitions, even when using C++ */ -#ifdef __cplusplus -extern "C" { -#endif - -#ifndef M_PI -#define M_PI 3.141592654 -#endif - -#include <SDL.h> - -/* ---- Defines */ - -#define SMOOTHING_OFF 0 -#define SMOOTHING_ON 1 - -/* ---- Structures */ - - typedef struct tColorRGBA { - Uint8 r; - Uint8 g; - Uint8 b; - Uint8 a; - } tColorRGBA; - - typedef struct tColorY { - Uint8 y; - } tColorY; - - -/* ---- Prototypes */ - -#ifdef WIN32 -#ifdef BUILD_DLL -#define DLLINTERFACE __declspec(dllexport) -#else -#define DLLINTERFACE __declspec(dllimport) -#endif -#else -#define DLLINTERFACE -#endif - -/* - - rotozoomSurface() - - Rotates and zoomes a 32bit or 8bit 'src' surface to newly created 'dst' surface. - 'angle' is the rotation in degrees. 'zoom' a scaling factor. If 'smooth' is 1 - then the destination 32bit surface is anti-aliased. If the surface is not 8bit - or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly. - -*/ - - DLLINTERFACE SDL_Surface *rotozoomSurface(SDL_Surface * src, double angle, double zoom, int smooth); - - -/* Returns the size of the target surface for a rotozoomSurface() call */ - - DLLINTERFACE void rotozoomSurfaceSize(int width, int height, double angle, double zoom, int *dstwidth, - int *dstheight); - -/* - - zoomSurface() - - Zoomes a 32bit or 8bit 'src' surface to newly created 'dst' surface. - 'zoomx' and 'zoomy' are scaling factors for width and height. If 'smooth' is 1 - then the destination 32bit surface is anti-aliased. If the surface is not 8bit - or 32bit RGBA/ABGR it will be converted into a 32bit RGBA format on the fly. - -*/ - - DLLINTERFACE SDL_Surface *zoomSurface(SDL_Surface * src, double zoomx, double zoomy, int smooth); - -/* Returns the size of the target surface for a zoomSurface() call */ - - DLLINTERFACE void zoomSurfaceSize(int width, int height, double zoomx, double zoomy, int *dstwidth, int *dstheight); - - -/* Ends C function definitions when using C++ */ -#ifdef __cplusplus -}; -#endif - -#endif /* _SDL_rotozoom_h */