overlay.h

/*
 *  OGF/Graphite: Geometry and Graphics Programming Library + Utilities
 *  Copyright (C) 2000 Bruno Levy
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  If you modify this software, you should include a notice giving the
 *  name of the person performing the modification, the date of modification,
 *  and the reason for such modification.
 *
 *  Contact: Bruno Levy
 *
 *     levy@loria.fr
 *
 *     ISA Project
 *     LORIA, INRIA Lorraine,
 *     Campus Scientifique, BP 239
 *     54506 VANDOEUVRE LES NANCY CEDEX
 *     FRANCE
 *
 *  Note that the GNU General Public License does not permit incorporating
 *  the Software into proprietary programs.
 */
 
#ifndef H_OGF_RENDERER_CONTEXT_OVERLAY_H
#define H_OGF_RENDERER_CONTEXT_OVERLAY_H
 
#include <OGF/renderer/common/common.h>
#include <geogram/image/color.h>
 
namespace OGF {
 
    class RenderingContext;
 
    class RENDERER_API Overlay {
    public:
 
        Overlay(
            RenderingContext* rendering_context
        ) : rendering_context_(rendering_context) {
        }
 
        void clear();
 
        void playback();
 
        void segment(vec2 p1, vec2 p2, Color color, double thickness=1.0);
 
        void rect(vec2 p1, vec2 p2, Color color, double thickness=1.0);
 
        void fillrect(vec2 p1, vec2 p2, Color color);
 
        void circle(vec2 p1, double R, Color color, double thickness=1.0);
 
        void fillcircle(vec2 p1, double R, Color color);
 
        void filltriangle(vec2 p1, vec2 p2, vec2 p3, Color color);
 
        void fillquad(vec2 p1, vec2 p2, vec2 p3, vec2 p4, Color color);
 
 
        vec2f imgui_to_GL(const vec2f& XY_imgui) const;
 
        vec2f GL_to_imgui(const vec2f& XY_GL) const;
 
        vec2f GL_to_imgui(const vec2& XY_GL) const {
            return GL_to_imgui(vec2f(float(XY_GL.x), float(XY_GL.y)));
        }
 
    private:
        enum PrimitiveType {
            OVL_SEGMENT =0,
            OVL_RECT    =1,
            OVL_CIRCLE  =2,
            OVL_TRIANGLE=3,
            OVL_QUAD    =4
        };
        struct Primitive {
            PrimitiveType type;
            vec2f p[4];
            float R;
            float thickness;
            Numeric::uint32 color;
            bool filled;
        };
 
        void add_primitive(Primitive& prim);
        vector<Primitive> primitives_;
        RenderingContext* rendering_context_;
    };
 
}
 
#endif