cone_renderer.h

#pragma once
 
#include "surface_renderer.h"
 
#include "gl/lib_begin.h"
 
namespace cgv { // @<
    namespace render { // @<
        
        class CGV_API cone_renderer;
 
 
        extern CGV_API cone_renderer& ref_cone_renderer(context& ctx, int ref_count_change = 0);
        struct CGV_API cone_render_style : public surface_render_style
        {   
            float radius_scale;
 
            float radius;
 
            bool show_caps;
            bool rounded_caps;
 
            bool enable_texturing;
            enum TextureBlendMode {
                TBM_MIX = 0,
                TBM_TINT = 1,
                TBM_MULTIPLY = 2,
                TBM_INVERSE_MULTIPLY = 3,
                TBM_ADD = 4,
            } texture_blend_mode;
            float texture_blend_factor;
            bool texture_tile_from_center;
            vec2 texture_offset;
            vec2 texture_tiling;
            bool texture_use_reference_length;
            float texture_reference_length;
 
            bool enable_ambient_occlusion;
            float ao_offset;
            float ao_distance;
            float ao_strength;
 
            vec3 tex_offset;
            vec3 tex_scaling;
            vec3 tex_coord_scaling;
            float texel_size;
            float cone_angle_factor;
            std::vector<vec3> sample_dirs;
 
            cone_render_style();
        };
 
        class CGV_API cone_renderer : public surface_renderer
        {
        protected:
            bool has_radii;
            shader_define_map shader_defines;
            render_style* create_render_style() const;
            void update_defines(shader_define_map& defines);
            bool build_shader_program(context& ctx, shader_program& prog, const shader_define_map& defines);
 
            texture* albedo_texture;
            texture* density_texture;
 
        public:
            cone_renderer();
            void enable_attribute_array_manager(const context& ctx, attribute_array_manager& aam);
            void disable_attribute_array_manager(const context& ctx, attribute_array_manager& aam);
            bool set_albedo_texture(texture* tex);
            bool set_density_texture(texture* tex);
            bool enable(context& ctx);
            template <typename T = float>
 
            void set_radius_array(const context& ctx, const std::vector<T>& radii) { has_radii = true; set_attribute_array(ctx, "radius", radii); }
            template <typename T = float>
            void set_radius_array(const context& ctx, const T* radii, size_t nr_elements, unsigned stride_in_bytes = 0) { has_radii = true; set_attribute_array(ctx, "radius", radii, nr_elements, stride_in_bytes); }
            void remove_radius_array(const context& ctx);
            template <typename T = float>
            void set_sphere_array(const context& ctx, const std::vector<cgv::math::fvec<T, 4> >& spheres) {
                set_composed_attribute_array(ctx, "position", &spheres.front(), spheres.size(), reinterpret_cast<const cgv::math::fvec<T, 3>&>(spheres.front()));
                ref_composed_attribute_array(ctx, "radius", "position", &spheres.front(), spheres.size(), spheres[0][3]);
                has_positions = true;
                has_radii = true;
            }
            bool validate_attributes(const context& ctx) const;
            bool disable(context& ctx);
            void draw(context& ctx, size_t start, size_t count,
                bool use_strips = false, bool use_adjacency = false, uint32_t strip_restart_index = -1);
            virtual void clear(const context& ctx);
        };
 
        struct CGV_API cone_render_style_reflect : public cone_render_style
        {
            bool self_reflect(cgv::reflect::reflection_handler& rh);
        };
 
        extern CGV_API cgv::reflect::extern_reflection_traits<cone_render_style, cone_render_style_reflect> get_reflection_traits(const cone_render_style&);
    }
}
 
#include <cgv/config/lib_end.h>