visualizenormalsmesh.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
#pragma once
 
// Local Includes
#include "mesh.h"
 
// External Includes
#include <nap/resourceptr.h>
 
namespace nap
{
    // Forward Declares
    class Core;
    class RenderService;
 
    class NAPAPI VisualizeNormalsMesh : public IMesh
    {
        RTTI_ENABLE(IMesh)
    public:
        VisualizeNormalsMesh(Core& core);
 
        virtual bool init(utility::ErrorState& errorState) override;
 
        virtual MeshInstance& getMeshInstance() override                    { return *mMeshInstance; }
 
        virtual const MeshInstance& getMeshInstance() const override        { return *mMeshInstance; }
 
        bool calculateNormals(utility::ErrorState& error, bool push = true);
 
        ResourcePtr<IMesh> mReferenceMesh = nullptr;                            
        float mNormalLength = 1.0f;                                             
        EMemoryUsage    mUsage = EMemoryUsage::DynamicWrite;                    
 
        bool setReferenceMesh(IMesh& mesh, nap::utility::ErrorState& error);
 
    protected:
        std::unique_ptr<MeshInstance> mMeshInstance = nullptr;
 
        // Position Attribute data
        nap::Vec3VertexAttribute* mPositionAttr = nullptr;
 
        // 'Tip' vertex attribute data, 1.0 for top vertex of normal, 0.0 for bottom vertex of normal
        nap::FloatVertexAttribute* mTipAttr = nullptr;
 
        // Normal Attribute data
        nap::Vec3VertexAttribute* mNormalsAttr = nullptr;
 
        // UV attribute data
        std::vector<nap::Vec3VertexAttribute*> mUvAttrs;
 
        // Color attribute data
        std::vector<nap::Vec4VertexAttribute*> mColorAttrs;
 
        // The current reference mesh
        nap::IMesh* mCurrentReferenceMesh = nullptr;
 
        // The renderer
        nap::RenderService* mRenderService = nullptr;
 
        bool createMeshInstance(utility::ErrorState& error);
 
    private:
        bool setup(utility::ErrorState& error);
    };
}