MRImGuiImage.h

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#pragma once
#include "exports.h"
#include <MRMesh/MRMeshFwd.h>
#include <MRMesh/MRMeshTexture.h>
#include "MRRenderGLHelpers.h"
#include "MRViewer/MRImGui.h"
 
namespace MR
{
 
// Simple ImGui Image
// create GL texture in constructor, free it in destructor
// cant be moved(for now) or copied(forever)
class MRVIEWER_CLASS ImGuiImage
{
public:
    MRVIEWER_API ImGuiImage();
    MRVIEWER_API virtual ~ImGuiImage();
 
    // Sets image to texture
    MRVIEWER_API void update( const MeshTexture& texture );
 
    // Returns ImTextureID for ImGui::Image( getImTextureId(), ... )
    // ImGui recommends using the intermediate cast intptr_t
    ImTextureID getImTextureId() const { return (ImTextureID) (intptr_t) glTex_.getId(); }
 
    // Returns gl texture id
    unsigned getId() const { return glTex_.getId(); }
 
    // Returns current MeshTexture
    const MeshTexture& getMeshTexture() const { return texture_; }
 
    int getImageWidth() const { return texture_.resolution.x; }
    int getImageHeight() const { return texture_.resolution.y; }
 
private:
    GlTexture2 glTex_;
    MeshTexture texture_;
         
    void bind_();
};
 
} //namespace MR