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/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup obj
*/
#pragma once
#include "BLI_math_vec_types.hh"
#include "DNA_node_types.h"
struct Material;
namespace blender::io::obj {
enum class MTLTexMapType {
Color = 0,
Specular,
SpecularExponent,
Alpha,
Reflection,
Emission,
Normal,
Count
};
extern const char *tex_map_type_to_socket_id[];
struct MTLTexMap {
bool is_valid() const
{
return !image_path.empty();
}
/* Target socket which this texture node connects to. */
float3 translation{0.0f};
float3 scale{1.0f};
/* Only Flat and Sphere projections are supported. */
int projection_type = SHD_PROJ_FLAT;
std::string image_path;
std::string mtl_dir_path;
};
/**
* Container suited for storing Material data for/from a .MTL file.
*/
struct MTLMaterial {
const MTLTexMap &tex_map_of_type(MTLTexMapType key) const
{
return texture_maps[(int)key];
}
MTLTexMap &tex_map_of_type(MTLTexMapType key)
{
return texture_maps[(int)key];
}
std::string name;
/* Always check for negative values while importing or exporting. Use defaults if
* any value is negative. */
float spec_exponent{-1.0f}; /* `Ns` */
float3 ambient_color{-1.0f}; /* `Ka` */
float3 color{-1.0f}; /* `Kd` */
float3 spec_color{-1.0f}; /* `Ks` */
float3 emission_color{-1.0f}; /* `Ke` */
float ior{-1.0f}; /* `Ni` */
float alpha{-1.0f}; /* `d` */
int illum_mode{-1};
MTLTexMap texture_maps[(int)MTLTexMapType::Count];
/* Only used for Normal Map node: `map_Bump`. */
float normal_strength{-1.0f};
};
MTLMaterial mtlmaterial_for_material(const Material *material);
} // namespace blender::io::obj
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