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