voxel_grob_shader.h

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/*
 *  OGF/Graphite: Geometry and Graphics Programming Library + Utilities
 *  Copyright (C) 2000-2009 INRIA - Project ALICE
 *
 *  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
 *
 *     Project ALICE
 *     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.
 *
 * As an exception to the GPL, Graphite can be linked with
 *  the following (non-GPL) libraries:
 *     Qt, SuperLU, WildMagic and CGAL
 */
 
 
#ifndef H_OGF_VOXEL_SHADERS_VOXEL_GROB_SHADER_H
#define H_OGF_VOXEL_SHADERS_VOXEL_GROB_SHADER_H
 
#include <OGF/voxel_gfx/common/common.h>
#include <OGF/voxel/grob/voxel_grob.h>
#include <OGF/scene_graph_gfx/shaders/shader.h>
#include <OGF/scene_graph/types/properties.h>
 
namespace GEO {
    class Image;
}
 
namespace OGF {
 
    //________________________________________________________
 
    class RenderingContext;
    class Builder;
    class Texture;
 
    gom_attribute(abstract, "true")
    gom_class VOXEL_GFX_API VoxelGrobShader : public Shader {
    public:
        VoxelGrobShader(VoxelGrob* grob);
 
        ~VoxelGrobShader() override;
 
        void draw() override;
 
        void pick_object(index_t object_id) override;
 
        void blink() override;
 
 
    gom_properties:
        std::string get_displayable_attributes() const {
            std::string result;
            if(voxel_grob() != nullptr) {
                result = voxel_grob()->get_displayable_attributes();
            }
            return result;
        }
 
    protected:
        VoxelGrob* voxel_grob() const {
            return static_cast<VoxelGrob*>(grob());
        }
    };
 
    //________________________________________________________
 
    gom_class VOXEL_GFX_API PlainVoxelGrobShader : public VoxelGrobShader {
    public:
        PlainVoxelGrobShader(VoxelGrob* grob);
 
        ~PlainVoxelGrobShader() override;
 
        void draw() override;
 
        void pick_object(index_t object_id) override;
 
        void blink() override;
 
    gom_properties:
 
 
    gom_slots:
 
        void autorange();
 
    gom_properties:
 
        void set_attribute_min(double value) {
            attribute_min_ = value;
            update();
        }
 
        double get_attribute_min() const {
            return attribute_min_;
        }
 
        void set_attribute_max(double value) {
            attribute_max_ = value;
            update();
        }
 
        double get_attribute_max() const {
            return attribute_max_;
        }
 
        gom_attribute(handler, "combo_box")
        gom_attribute(values, "$displayable_attributes")
        void set_attribute(const std::string& value);
 
        const std::string& get_attribute() const {
            return attribute_name_;
        }
 
        void set_colormap(const ColormapStyle& value) {
            colormap_style_ = value;
            colormap_texture_.reset();
            update();
        }
 
        const ColormapStyle& get_colormap() const {
            return colormap_style_;
        }
 
        void set_lighting(bool value) {
            lighting_ = value;
            update();
        }
 
        bool get_lighting() const {
            return lighting_;
        }
 
 
        void set_clipping(bool value) {
            clipping_ = value;
            update();
        }
 
        bool get_clipping() const {
            return clipping_;
        }
 
 
        void set_box_style(const EdgeStyle& value) {
            box_style_ = value;
            update();
        }
 
        const EdgeStyle& get_box_style() const {
            return box_style_;
        }
 
    protected:
 
        void draw_wireframe_box();
 
        void draw_volume(
            Texture* colormap_texture,
            double attribute_min,
            double attribute_max,
            index_t repeat
        );
 
        void create_textures_if_needed();
 
    protected:
        std::string       attribute_name_;
        double            attribute_min_;
        double            attribute_max_;
        ColormapStyle     colormap_style_;
        Texture_var       colormap_texture_;
        Texture_var       attribute_texture_;
        bool              lighting_;
        bool              clipping_;
        bool              picking_;
        EdgeStyle         box_style_;
    };
 
    //________________________________________________________
}
#endif