diff options
Diffstat (limited to 'release/plugins/sequence/scatter.c')
| -rw-r--r-- | release/plugins/sequence/scatter.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/release/plugins/sequence/scatter.c b/release/plugins/sequence/scatter.c new file mode 100644 index 00000000000..cba8aeab5a8 --- /dev/null +++ b/release/plugins/sequence/scatter.c @@ -0,0 +1,235 @@ +/** + * $Id$ + * + * ***** BEGIN GPL/BL DUAL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL/BL DUAL LICENSE BLOCK ***** + */ + +#include "plugin.h" + +/* ******************** GLOBAL VARIABLES ***************** */ + + +char name[24]= "scatter"; + +/* structure for buttons, + * butcode name default min max 0 + */ + +VarStruct varstr[]= { + LABEL, "Input: 1 strip", 0.0, 0.0, 0.0, "", + NUM|INT, "seed: ", 1.0, 0.0, 10.0, "Offset in random table", + NUMSLI|FLO, "swing: ", 1.0, 0.0, 3.0, "The amplitude, width of the effect", + TOG|INT, "wrap", 0.0, 0.0, 1.0, "Cyclic wrap around the left/right edges", + NUM|INT, "type: ", 1.0, 0.0, 1.0, "Type 1 is random for each frame", +}; + +/* The cast struct is for input in the main doit function + Varstr and Cast must have the same variables in the same order */ + +typedef struct Cast { + int dummy; /* because of the 'label' button */ + int seed; + float swing; + int wrap; + int type; +} Cast; + +/* cfra: the current frame */ + +float cfra; + +void plugin_seq_doit(Cast *, float, float, int, int, ImBuf *, ImBuf *, ImBuf *, ImBuf *); + + +/* ******************** Fixed functions ***************** */ + +int plugin_seq_getversion(void) +{ + return B_PLUGIN_VERSION; +} + +void plugin_but_changed(int but) +{ +} + +void plugin_init() +{ +} + +void plugin_getinfo(PluginInfo *info) +{ + info->name= name; + info->nvars= sizeof(varstr)/sizeof(VarStruct); + info->cfra= &cfra; + + info->varstr= varstr; + + info->init= plugin_init; + info->seq_doit= (SeqDoit) plugin_seq_doit; + info->callback= plugin_but_changed; +} + + +/* ************************************************************ + Scatter + + with usage of ImBuf rect operation. + + ************************************************************ */ + +static void ibufrectop(ImBuf *dbuf, ImBuf *sbuf, + int destx, int desty, + int srcx, int srcy, int width, int height, + void (*operation)(), + int value) +{ + uint *drect,*srect; + + if (dbuf == 0) return; + if (operation == 0) return; + + if (destx < 0){ + srcx -= destx ; + width += destx ; + destx = 0; + } + if (srcx < 0){ + destx -= srcx ; + width += destx ; + srcx = 0; + } + if (desty < 0){ + srcy -= desty ; + height += desty ; + desty = 0; + } + if (srcy < 0){ + desty -= srcy ; + height += desty ; + srcy = 0; + } + + if (width > dbuf->x - destx) width = dbuf->x - destx; + if (height > dbuf->y - desty) height = dbuf->y - desty; + if (sbuf){ + if (width > sbuf->x - srcx) width = sbuf->x - srcx; + if (height > sbuf->y - srcy) height = sbuf->y - srcy; + } + + if (width <= 0) return; + if (height <= 0) return; + + drect = dbuf->rect; + if (sbuf) srect = sbuf->rect; + + drect += desty * dbuf->x; + drect += destx; + destx = dbuf->x; + + if (sbuf) { + srect += srcy * sbuf->x; + srect += srcx; + srcx = sbuf->x; + } else{ + srect = drect; + srcx = destx; + } + + for (;height > 0; height--){ + operation(drect, srect, width, value); + drect += destx; + srect += srcx; + } +} + +static void rectcpy(uint *drect, uint *srect, int x) { + memcpy(drect,srect, x * sizeof(int)); +} + +static void rectfill(uint *drect, uint *srect, int x, int value) +{ + for (;x > 0; x--) *drect++ = value; +} + + +void plugin_seq_doit(Cast *cast, float facf0, float facf1, int sx, int sy, ImBuf *ibuf1, ImBuf *ibuf2, ImBuf *out, ImBuf *use) +{ + float f1, f2, t1, t2, t3; + int x, y, lr; + + /* fill imbuf 'out' with black */ + rectop(out, 0,0,0,0,0,32767,32767,rectfill, 0); + + switch (cast->type) { + case 0: + srand48(cast->seed); + break; + case 1: + srand48(cast->seed + facf0 * 1000); + break; + } + + for (y = 0; y < sy; y++) { + switch (cast->type) { + case 0: + if ((y & 1) == 0) { + f1 = drand48() - 0.5; + f2 = drand48() - 0.5; + f1 = cast->swing * f1; + f2 = cast->swing * f2; + if (cast->wrap) f2 += 1.0; + lr = drand48()>0.5; + t1 = facf0; + } else t1 = facf1; + + t2 = 1.0 - t1; + t3 = 3.0 * (f1 * t1 * t1 * t2 + f2 * t1 * t2 * t2); + if (cast->wrap) t3 += t2 * t2 * t2; + x = sx * t3; + if (lr) x = -x; + break; + case 1: + f1 = drand48() - 0.5; + f1 = f1 * cast->swing; + if ((y & 1) == 0) f1 *= facf0; + else f1 *= facf1; + x = f1 * sx; + break; + } + + rectop(out, ibuf1, 0, y, x, y, 32767, 1, rectcpy, 0); + if (cast->wrap) { + rectop(out, ibuf1, 0, y, x + sx, y, 32767, 1, rectcpy, 0); + rectop(out, ibuf1, 0, y, x + sx + sx, y, 32767, 1, rectcpy, 0); + rectop(out, ibuf1, 0, y, x - sx, y, 32767, 1, rectcpy, 0); + rectop(out, ibuf1, 0, y, x - sx - sx, y, 32767, 1, rectcpy, 0); + } + } +} + |