sphere_renderer.h

#pragma once
 
#include "surface_renderer.h"
 
#include "gl/lib_begin.h"
 
namespace cgv { // @<
        namespace render { // @<
                class CGV_API sphere_renderer;
 
 
                extern CGV_API sphere_renderer& ref_sphere_renderer(context& ctx, int ref_count_change = 0);
 
                struct CGV_API sphere_render_style : public surface_render_style
                {
                        /*@name sphere rendering attributes*/
                        float radius_scale;
                        float radius;
                        bool use_group_radius;
                        float blend_width_in_pixel;
                        float halo_width_in_pixel;
                        float percentual_halo_width;
                        cgv::media::color<float, cgv::media::RGB, cgv::media::OPACITY> halo_color;
                        float halo_color_strength;
 
                        sphere_render_style();
                };
 
                class CGV_API sphere_renderer : public surface_renderer
                {
                protected:
                        bool has_radii;
                        bool has_group_radii;
                        float y_view_angle;
                        render_style* create_render_style() const;
                public:
                        sphere_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 init(context& ctx);
                        void set_y_view_angle(float y_view_angle);
                        template <typename T = float>
                        void set_radius_array(const context& ctx, const std::vector<T>& radii) { has_radii = true; set_attribute_array(ctx, ref_prog().get_attribute_location(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, ref_prog().get_attribute_location(ctx, "radius"), radii, nr_elements, stride_in_bytes); }
                        template <typename T = float>
                        void set_group_radii(const context& ctx, const std::vector<T>& group_radii) { has_group_radii = true; ref_prog().set_uniform_array(ctx, "group_radii", group_radii); }
                        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, ref_prog().get_attribute_location(ctx, "position"),
                                        &spheres.front(), spheres.size(), reinterpret_cast<const cgv::math::fvec<T, 3>&>(spheres.front()));
                                ref_composed_attribute_array(ctx, ref_prog().get_attribute_location(ctx, "radius"),
                                        ref_prog().get_attribute_location(ctx, "position"), &spheres.front(), spheres.size(), spheres[0][3]);
                                has_positions = true;
                                has_radii = true;
                        }
                        bool validate_attributes(const context& ctx) const;
                        bool enable(context& ctx);
                        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);
                };
 
                struct CGV_API sphere_render_style_reflect : public sphere_render_style
                {
                        bool self_reflect(cgv::reflect::reflection_handler& rh);
                };
                extern CGV_API cgv::reflect::extern_reflection_traits<sphere_render_style, sphere_render_style_reflect> get_reflection_traits(const sphere_render_style&);
        }
}
 
 
#include <cgv/config/lib_end.h>