diff options
Diffstat (limited to 'release/plugins/texture/clouds2.c')
| -rw-r--r-- | release/plugins/texture/clouds2.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/release/plugins/texture/clouds2.c b/release/plugins/texture/clouds2.c new file mode 100644 index 00000000000..6511b7f68b6 --- /dev/null +++ b/release/plugins/texture/clouds2.c @@ -0,0 +1,177 @@ +/** + * $Id$ + * + * ***** 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 "math.h" +#include "plugin.h" + +/* ******************** GLOBAL VARIABLES ***************** */ + +/* Texture name */ + +char name[24]= "Clouds2"; + +/* Subtype names must be less than 15 characters */ + +#define NR_TYPES 3 +char stnames[NR_TYPES][16]= {"Intens", "Col", "Bump" }; + +/* Structure for buttons, + * butcode name default min max 0 + */ + +VarStruct varstr[]= { +{ NUM|FLO, "Offset", -0.5, -20.0, 20.0, ""}, +{ NUM|INT, "Depth", 8.0, 1.0, 12.0, ""}, +{ NUM|FLO, "Scale", 2.2, -20.0, 20.0, ""}, +{ NUM|FLO, "Falloff", 1.0, -20.0, 20.0, ""} +}; + +/* The cast struct is for input in the main doit function + Varstr and Cast must have the same variables in the same order, + INCLUDING dummy variables for label fields. */ + +typedef struct Cast { + float offset; + int depth; + float txtscale; + float falloff; +} Cast; + +/* result: + Intensity, R, G, B, Alpha, nor.x, nor.y, nor.z + */ + +float result[8]; + +/* cfra: the current frame */ + +float cfra; + +int plugin_tex_doit(int, Cast*, float*, float*, float*); + +/* ******************** Fixed functions ***************** */ + +int plugin_tex_getversion(void) +{ + return B_PLUGIN_VERSION; +} + +void plugin_but_changed(int but) +{ +} + +void plugin_init(void) +{ + +} + +/* this function should not be changed: */ + +void plugin_getinfo(PluginInfo *info) +{ + info->name= name; + info->stypes= NR_TYPES; + info->nvars= sizeof(varstr)/sizeof(VarStruct); + + info->snames= stnames[0]; + info->result= result; + info->cfra= &cfra; + info->varstr= varstr; + + info->init= plugin_init; + info->tex_doit= (TexDoit) plugin_tex_doit; + info->callback= plugin_but_changed; +} + +/* ********************* the texture ******************** */ + + +/* return 0: One channel texture + return 1: RGB texture + return 2: Normals texture */ + +int plugin_tex_doit(int stype, Cast *cast, float *texvec, float *dxt, float *dyt) +{ + float val = 0.0; + float a = 1.0; + float p[3]; + float tv[3]; + int i; + + tv[0]=(texvec[0]+1.0)/2.0; + tv[1]=(texvec[1]+1.0)/2.0; + tv[2]=(texvec[2]+1.0)/2.0; + + p[0] = cast->txtscale * tv[0]; + p[1] = cast->txtscale * tv[1]; + p[2] = cast->txtscale * tv[2]; + + for (i=0; i<cast->depth; i++) { + val += a * hnoise(1.0, p[0], p[1], p[2]); + + p[0] *= 2.0; + p[1] *= 2.0; + p[2] *= 2.0; + a *= 0.5; + } + + /* always return this value */ + result[0] = CLAMP (val+cast->offset, 0.0, 1.0) * pow (fabs(sqrt(tv[0]*tv[0]+tv[1]*tv[1]+tv[2]*tv[2])), cast->falloff); + + if(stype==1) { + /* color? then return 1; + * + * this is r, g, b, a: + */ + result[1]= 0.5*result[0]; + result[2]= 1.0-val; + result[3]= fsqrt(fabs(result[0])); + result[4]= 1.0; + + return 1; + } + if(stype==2) { + /* normal? then return 2 + * + * This value is the displacement of the actual normal in + * the Material calculation. + */ + result[5]+= val; + result[6]+= 1.0-val; + result[7]= 0.0; + + return 2; + } + + return 0; +} + |