TextureRendererBase.h

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// ----------------------------------------------------------------------------
// -                        CloudViewer: www.cloudViewer.org                  -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.cloudViewer.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include <vtkSmartPointer.h>
 
#include <memory>
#include <string>
#include <vector>
 
class vtkActor;
class vtkLODActor;
class vtkPolyData;
class vtkRenderer;
class vtkRenderWindow;
 
// Forward declarations
class ccMaterialSet;
class ccMaterial;
 
namespace PclUtils {
namespace renders {
 
// Forward declarations
class MaterialConverter;
 
enum class RenderingMode {
    PBR,            // Physically Based Rendering (VTK 9+)
    MULTI_TEXTURE,  // Traditional multi-texture rendering
    MATERIAL_ONLY   // Material properties only, no textures
};
 
class TextureRendererBase {
public:
    TextureRendererBase() = default;
    virtual ~TextureRendererBase() = default;
 
    virtual bool CanHandle(size_t material_count,
                           bool has_pbr_textures,
                           bool has_multiple_map_kd) const = 0;
 
    virtual RenderingMode GetMode() const = 0;
 
    virtual bool Apply(vtkLODActor* actor,
                       const class ccMaterialSet* materials,
                       vtkPolyData* polydata,
                       vtkRenderer* renderer) = 0;
 
    virtual bool Update(vtkActor* actor,
                        const class ccMaterialSet* materials,
                        vtkPolyData* polydata,
                        vtkRenderer* renderer) = 0;
 
    virtual std::string GetName() const = 0;
 
protected:
    void ClearTextures(vtkActor* actor);
 
    bool ValidateActor(vtkActor* actor) const;
 
    bool ValidateMaterials(const class ccMaterialSet* materials) const;
};
 
}  // namespace renders
}  // namespace PclUtils