diff options
Diffstat (limited to 'intern/cycles/kernel/osl/nodes/node_math.osl')
-rw-r--r-- | intern/cycles/kernel/osl/nodes/node_math.osl | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/nodes/node_math.osl b/intern/cycles/kernel/osl/nodes/node_math.osl new file mode 100644 index 00000000000..be9bb71d511 --- /dev/null +++ b/intern/cycles/kernel/osl/nodes/node_math.osl @@ -0,0 +1,84 @@ +/* + * 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" + +float safe_divide(float a, float b) +{ + float result; + + if(b == 0.0) + result = 0.0; + else + result = a/b; + + return result; +} + +float safe_log(float a, float b) +{ + if(a < 0.0 || b < 0.0) + return 0.0; + + return log(a)/log(b); +} + +shader node_math( + string type = "Add", + float Value1 = 0.0, + float Value2 = 0.0, + output float Value = 0.0) +{ + /* OSL asin, acos, pow check for values that could give rise to nan */ + + if(type == "Add") + Value = Value1 + Value2; + if(type == "Subtract") + Value = Value1 - Value2; + if(type == "Multiply") + Value = Value1*Value2; + if(type == "Divide") + Value = safe_divide(Value1, Value2); + if(type == "Sine") + Value = sin(Value1); + if(type == "Cosine") + Value = cos(Value1); + if(type == "Tangent") + Value = tan(Value1); + if(type == "Arcsine") + Value = asin(Value1); + if(type == "Arccosine") + Value = acos(Value1); + if(type == "Arctangent") + Value = atan(Value1); + if(type == "Power") + Value = pow(Value1, Value2); + if(type == "Logarithm") + Value = safe_log(Value1, Value2); + if(type == "Minimum") + Value = min(Value1, Value2); + if(type == "Maximum") + Value = max(Value1, Value2); + if(type == "Round") + Value = floor(Value1 + 0.5); + if(type == "Less Than") + Value = Value1 < Value2; + if(type == "Greater Than") + Value = Value1 > Value2; +} + |