spline_tube_renderer.h

#pragma once
 
#include "surface_renderer.h"
 
#include "gl/lib_begin.h"
 
namespace cgv { // @<
    namespace render { // @<
        class CGV_API spline_tube_renderer;


        extern CGV_API spline_tube_renderer& ref_spline_tube_renderer(context& ctx, int ref_count_change = 0);
 
        struct CGV_API spline_tube_render_style : public surface_render_style
        {   
            float radius_scale = 1.0f;
            float radius = 1.0f;
        };

        class CGV_API spline_tube_renderer : public surface_renderer
        {
        protected:
            bool has_radii = false;
            bool has_tangents = false;
            vec3 eye_pos = { 0.0f };
            std::string get_default_prog_name() const override { return "spline_tube.glpr"; }
            render_style* create_render_style() const override { return new spline_tube_render_style(); }
        public:
            void set_eye_pos(vec3 ep) { eye_pos = ep; }
            void enable_attribute_array_manager(const context& ctx, attribute_array_manager& aam) override;
            void disable_attribute_array_manager(const context& ctx, attribute_array_manager& aam) override;
            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_tangent_array(const context& ctx, const std::vector<T>& tangents) { has_tangents = true; set_attribute_array(ctx, "tangent", tangents); }
            template <typename T = float>
            void set_tangent_array(const context& ctx, const T* tangents, size_t nr_elements, unsigned stride_in_bytes = 0) { has_tangents = true; set_attribute_array(ctx, "tangent", tangents, nr_elements, stride_in_bytes); }
            void remove_tangent_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.data(), 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;
            }

            template <typename T = float>
            void set_sphere_array(const context& ctx, const cgv::math::fvec<T, 4>* spheres, size_t nr_elements) {
                set_composed_attribute_array(ctx, "position", spheres, nr_elements, reinterpret_cast<const cgv::math::fvec<T, 3>&>(*spheres));
                ref_composed_attribute_array(ctx, "radius", "position", spheres, nr_elements, (*spheres)[3]);
                has_positions = true;
                has_radii = true;
            }

            bool validate_attributes(const context& ctx) const override;
            bool enable(context& ctx) override;
            bool disable(context& ctx) override;
            void draw(context& ctx, size_t start, size_t count,
                bool use_strips = false, bool use_adjacency = false, uint32_t strip_restart_index = -1) override;
        };
 
        struct CGV_API spline_tube_render_style_reflect : public spline_tube_render_style
        {
            bool self_reflect(cgv::reflect::reflection_handler& rh);
        };
        extern CGV_API cgv::reflect::extern_reflection_traits<spline_tube_render_style, spline_tube_render_style_reflect> get_reflection_traits(const spline_tube_render_style&);
    }
}
 
#include <cgv/config/lib_end.h>