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- // K-3D
- // Copyright (c) 1995-2006, Timothy M. Shead
- //
- // Contact: tshead@k-3d.com
- //
- // 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.
- //
- // 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
-
- /** \file
- \author Tim Shead (tshead@k-3d.com)
- */
-
- surface k3d_decal(
- string texturename = "";
- float s0 = 0.0;
- float s1 = 1.0;
- float t0 = 0.0;
- float t1 = 1.0;
- )
- {
- float alpha = 1.0;
- color Ct = Cs;
-
- if(texturename != "")
- {
- float ss = mix(s0, s1, s);
- float tt = mix(t0, t1, t);
- alpha = float texture(texturename[3], ss, tt);
- Ct = color texture(texturename, ss, tt);
- }
-
- Oi = alpha;
- Ci = Oi * Cs * Ct;
- }
-
-