CGII/framework/include/cgv/render/textured_material.h

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2018-05-17 13:50:03 +00:00
#pragma once
#include <cgv/media/illum/obj_material.hh>
#include "texture.h"
#include "lib_begin.h"
namespace cgv {
namespace render {
/// class that extends obj_material with the management of textures
class CGV_API textured_material : public media::illum::obj_material
{
public:
/// different test functions for alpha test
enum AlphaTestFunc { AT_ALWAYS, AT_LESS, AT_EQUAL, AT_GREATER };
protected:
texture* ambient_texture;
texture* diffuse_texture;
texture* specular_texture;
texture* emission_texture;
texture* bump_texture;
float alpha_threshold;
AlphaTestFunc alpha_test_func;
public:
/// initialize textures
textured_material();
/// construct from obj_material
textured_material(const media::illum::obj_material& mtl);
/// call this to ensure that the textures are loaded - typically done in the init_frame method of a drawable
void ensure_textures(context& ctx);
/// configure the alpha test that is performed in case alpha values are given in the textures
void set_alpha_test(AlphaTestFunc _alpha_test_func = AT_GREATER, float _alpha_threshold = 0.0f);
/// return the currently set alpha test function
AlphaTestFunc get_alpha_test_func() const;
/// return the currently used alpha threshold used by the comparison alpha test functions
float get_alpha_threshold() const;
/// return reference to currently set alpha test function
AlphaTestFunc& ref_alpha_test_func();
/// return reference to currently used alpha threshold used by the comparison alpha test functions
float& ref_alpha_threshold();
/// enable by modulating opacities of material with given opacity value
void enable(context& ctx, float opacity = 1.0f);
/// disable material
void disable(context& ctx);
/// destruct textures
void destruct_textures(context& ctx, TextureType textures = TT_ALL_TEXTURES);
/// return pointer to ambient texture or 0 if non created
texture* get_ambient_texture() const;
/// return pointer to diffuse texture or 0 if non created
texture* get_diffuse_texture() const;
/// return pointer to specular texture or 0 if non created
texture* get_specular_texture() const;
/// return pointer to emission texture or 0 if non created
texture* get_emission_texture() const;
/// return pointer to bump map texture or 0 if non created
texture* get_bump_texture() const;
};
}
}
#include <cgv/config/lib_end.h>