consttexture.cpp

/*
    This file is part of Nori, a simple educational ray tracer
 
    Copyright (c) 2015 by Romain Prévost
 
    Nori is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License Version 3
    as published by the Free Software Foundation.
 
    Nori 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, see <http://www.gnu.org/licenses/>.
*/
 
#include <nori/texture.h>
 
NORI_NAMESPACE_BEGIN
 
template <typename T>
class ConstantTexture : public Texture<T> {
public:
    ConstantTexture(const PropertyList &props);
 
    virtual std::string toString() const override;
 
    virtual T eval(const Point2f & uv) override {
        return m_value;
    }
 
protected:
    T m_value;
};
 
template <>
ConstantTexture<float>::ConstantTexture(const PropertyList &props) {
    m_value = props.getFloat("value",0.f);
}
template <>
ConstantTexture<Color3f>::ConstantTexture(const PropertyList &props) {
    m_value = props.getColor("value",Color3f(0.f));
}
 
 
template <>
std::string ConstantTexture<float>::toString() const {
    return tfm::format(
            "ConstantTexture[ %f ]",
            m_value);
}
 
template <>
std::string ConstantTexture<Color3f>::toString() const {
    return tfm::format(
            "ConstantTexture[ %s ]",
            m_value.toString());
}
 
NORI_REGISTER_TEMPLATED_CLASS(ConstantTexture, float, "constant_float")
NORI_REGISTER_TEMPLATED_CLASS(ConstantTexture, Color3f, "constant_color")
NORI_NAMESPACE_END