diff options
Diffstat (limited to 'intern/cycles/kernel/osl/nodes/node_voronoi_texture.osl')
-rw-r--r-- | intern/cycles/kernel/osl/nodes/node_voronoi_texture.osl | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/nodes/node_voronoi_texture.osl b/intern/cycles/kernel/osl/nodes/node_voronoi_texture.osl new file mode 100644 index 00000000000..140ba6a6ba1 --- /dev/null +++ b/intern/cycles/kernel/osl/nodes/node_voronoi_texture.osl @@ -0,0 +1,82 @@ +/* + * Copyright 2011, Blender Foundation. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include "stdosl.h" +#include "node_texture.h" + +/* Voronoi */ + +shader node_voronoi_texture( + string DistanceMetric = "Actual Distance", + string Coloring = "Intensity", + float Weight1 = 1.0, + float Weight2 = 0.0, + float Weight3 = 0.0, + float Weight4 = 0.0, + float Exponent = 2.5, + float Intensity = 1.0, + float Size = 0.25, + point Vector = P, + output float Fac = 0.0, + output color Color = color(0.0, 0.0, 0.0)) +{ + float exponent = max(Exponent, 1e-5); + float size = nonzero(Size, 1e-5); + + float aw1 = fabs(Weight1); + float aw2 = fabs(Weight2); + float aw3 = fabs(Weight3); + float aw4 = fabs(Weight4); + float sc = (aw1 + aw2 + aw3 + aw4); + + if(sc != 0.0) + sc = Intensity/sc; + + /* compute distance and point coordinate of 4 nearest neighbours */ + float da[4]; + point pa[4]; + + voronoi(Vector/size, DistanceMetric, exponent, da, pa); + + /* Scalar output */ + Fac = sc * fabs(Weight1*da[0] + Weight2*da[1] + Weight3*da[2] + Weight4*da[3]); + + /* Colored output */ + if(Coloring == "Intensity") { + Color = color(Fac, Fac, Fac); + } + else { + Color = aw1*cellnoise_color(pa[0]); + Color += aw2*cellnoise_color(pa[1]); + Color += aw3*cellnoise_color(pa[2]); + Color += aw4*cellnoise_color(pa[3]); + + if(Coloring != "Position") { + float t1 = min((da[1] - da[0])*10.0, 1.0); + + if(Coloring == "Position, Outline, and Intensity") + Color *= t1*Fac; + else if(Coloring == "Position and Outline") + Color *= t1*sc; + } + else { + Color *= sc; + } + } +} + |