GerstnerSurface.hh

#ifndef VTESTBED_GRAPHICS_GERSTNERSURFACE_HH
#define VTESTBED_GRAPHICS_GERSTNERSURFACE_HH

#include <vtestbed/core/types.hh>
#include <vtestbed/graphics/GerstnerShader.hh>
#include <vtestbed/graphics/SurfaceShader.hh>
#include <vtestbed/graphics/types.hh>

namespace vtb {

    namespace graphics {

        template <class T>
        class GerstnerSurface: public Object3D, public Drawable3D {

        private:
            using vec3 = vtb::core::Vector<T,3>;
            using vec2 = vtb::core::Vector<T,2>;
            using int2 = vtb::core::int2;
            using vertex_matrix = vtb::core::Array<vec3,2>;

        private:
            GerstnerShader _shader;
            Mesh _mesh;
            Buffer _indexBuffer, _vertexBuffer;
            Vector2 _slicePoint;
            bool _show = false;
            vec2 _size;
            int2 _gridSize;

        public:

            GerstnerSurface();

            void step(const vertex_matrix& zeta, int2 gridSize, vec2 size);

            inline void showSlice(bool show) { this->_shader.showSlice(show); }

            inline void
            setSlice(const vec2& slice) {
                _shader.setSlice(Vector2(slice(0), slice(1)));
            }

            inline void show(bool b) { this->_show = b; }

        private:
            void
            generateSurface(
                    int2 gridSize,
                    vec2 size,
                    vtb::core::Array2<vec3> zeta
            );

            void draw(const Matrix4& transformation, Camera3D& camera) override;

        };

    }

}

#endif // vim:filetype=cpp