Charlie Jolly
d3670823b3
This also fixes glsl version of fmod when both inputs are negative. Differential Revision: https://developer.blender.org/D6704
113 lines
2.9 KiB
Plaintext
113 lines
2.9 KiB
Plaintext
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "stdosl.h"
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float safe_divide(float a, float b)
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{
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return (b != 0.0) ? a / b : 0.0;
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}
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vector safe_divide(vector a, vector b)
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{
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return vector((b[0] != 0.0) ? a[0] / b[0] : 0.0,
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(b[1] != 0.0) ? a[1] / b[1] : 0.0,
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(b[2] != 0.0) ? a[2] / b[2] : 0.0);
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}
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vector project(vector v, vector v_proj)
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{
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float lenSquared = dot(v_proj, v_proj);
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return (lenSquared != 0.0) ? (dot(v, v_proj) / lenSquared) * v_proj : vector(0.0);
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}
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vector snap(vector a, vector b)
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{
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return floor(safe_divide(a, b)) * b;
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}
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shader node_vector_math(string type = "add",
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vector Vector1 = vector(0.0, 0.0, 0.0),
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vector Vector2 = vector(0.0, 0.0, 0.0),
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float Scale = 1.0,
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output float Value = 0.0,
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output vector Vector = vector(0.0, 0.0, 0.0))
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{
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if (type == "add") {
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Vector = Vector1 + Vector2;
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}
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else if (type == "subtract") {
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Vector = Vector1 - Vector2;
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}
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else if (type == "multiply") {
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Vector = Vector1 * Vector2;
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}
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else if (type == "divide") {
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Vector = safe_divide(Vector1, Vector2);
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}
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else if (type == "cross_product") {
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Vector = cross(Vector1, Vector2);
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}
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else if (type == "project") {
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Vector = project(Vector1, Vector2);
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}
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else if (type == "reflect") {
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Vector = reflect(Vector1, normalize(Vector2));
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}
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else if (type == "dot_product") {
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Value = dot(Vector1, Vector2);
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}
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else if (type == "distance") {
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Value = distance(Vector1, Vector2);
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}
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else if (type == "length") {
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Value = length(Vector1);
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}
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else if (type == "scale") {
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Vector = Vector1 * Scale;
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}
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else if (type == "normalize") {
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Vector = normalize(Vector1);
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}
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else if (type == "snap") {
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Vector = snap(Vector1, Vector2);
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}
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else if (type == "floor") {
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Vector = floor(Vector1);
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}
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else if (type == "ceil") {
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Vector = ceil(Vector1);
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}
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else if (type == "modulo") {
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Vector = fmod(Vector1, Vector2);
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}
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else if (type == "fraction") {
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Vector = Vector1 - floor(Vector1);
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}
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else if (type == "absolute") {
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Vector = abs(Vector1);
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}
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else if (type == "minimum") {
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Vector = min(Vector1, Vector2);
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}
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else if (type == "maximum") {
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Vector = max(Vector1, Vector2);
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}
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else {
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warning("%s", "Unknown vector math operator!");
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}
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}
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