UnrealEngineUWP/Engine/Plugins/Experimental/MeshModelingToolset/Source/ModelingComponents/Public/Snapping/RaySpatialSnapSolver.h

// Copyright 1998-2019 Epic Games, Inc. All Rights Reserved.

#pragma once

#include "Snapping/BasePositionSnapSolver3.h"

class FToolDataVisualizer;

/**
 * FRaySpatialSnapSolver solves for a Point snap location based on an input Ray
 * and a set of snap targets (3D points and 3D lines). 
 * 
 * See FBasePositionSnapSolver3 for details on how to set up the snap problem
 * and get results.
 */
class MODELINGCOMPONENTS_API FRaySpatialSnapSolver : public FBasePositionSnapSolver3
{
public:
	FRaySpatialSnapSolver();

	//
	// solving
	//

	/** Solve the snapping problem */
	void UpdateSnappedPoint(const FRay3d& Ray);

	//
	// Utility rendering
	//

	/** Visualization of snap targets and result (if available) */
	void Draw(FToolDataVisualizer* Renderer, float LineLength, TMap<int,FLinearColor>* ColorMap = nullptr);

protected:

	TArray<FSnapTargetPoint> GeneratedTargetPoints;
	void GenerateTargetPoints(const FRay3d& Ray);
};