Unigine.PhysicsIntersection Class

using System;
using System.Collections;
using System.Collections.Generic;
using Unigine;

#if UNIGINE_DOUBLE
    using Vec3 = Unigine.dvec3;
    using Vec4 = Unigine.dvec4;
    using Mat4 = Unigine.dmat4;
#else
    using Vec3 = Unigine.vec3;
    using Vec4 = Unigine.vec4;
    using Mat4 = Unigine.mat4;
#endif

[Component(PropertyGuid = "AUTOGENERATED_GUID")] // <-- this line is generated automatically for a new component
public class PhysicsIntersectionClass : Component
{
	private void Init()
	{
		// create a mesh instance with a box surface
		Mesh mesh = new Mesh();
		mesh.AddBoxSurface("box", new vec3(2.2f));
		
		// create a new dynamic mesh from the Mesh instance
		ObjectMeshDynamic dynamic_mesh = new ObjectMeshDynamic(mesh);

		dynamic_mesh.WorldTransform = MathLib.Translate(new Vec3(0.0f, 0.0f, 2.0f));

		// assign a body and a shape to the dynamic mesh
		BodyRigid body = new BodyRigid(dynamic_mesh);
		ShapeBox shape = new ShapeBox(body, new vec3(2.2f));
	}
	private void Update()
	{
		// initialize points of the mouse direction
		Vec3 p0, p1;

		// get the current player (camera)
		Player player = Game.Player;
			
		// get the size of the current application window
		EngineWindow main_window = WindowManager.MainWindow;
		if (!main_window)
		{
			Engine.Quit();
			return;
		}

		ivec2 main_size = main_window.Size;

		// get the current X and Y coordinates of the mouse pointer
		int mouse_x = Gui.GetCurrent().MouseX;
		int mouse_y = Gui.GetCurrent().MouseY;
		// get the mouse direction from the player's position (p0) to the mouse cursor pointer (p1)
		player.GetDirectionFromScreen(out p0, out p1, mouse_x, mouse_y, 0, 0, main_size.x, main_size.y);

		// create the instance of the PhysicsIntersection object to save the information about the intersection
		PhysicsIntersection intersection = new PhysicsIntersection();
		// get an intersection
		Unigine.Object obj = Physics.GetIntersection(p0, p1, 1, intersection);

		// if the intersection has occurred, change the parameter of the object's material    
		if (obj != null)
		{
			for (int i = 0; i < obj.NumSurfaces; i++)
			{
				obj.SetMaterialParameterFloat4("albedo_color", new vec4(1.0f, 1.0f, 0.0f, 1.0f), i);
			}

			// if the intersected object has a shape, show the information about the intersection   
			Shape shape = intersection.Shape;
			if (shape != null)
			{
				Log.Message("physics intersection info: point: ({0} {1} {2}) shape: {3}\n", intersection.Point.x, intersection.Point.y, intersection.Point.z, shape.TypeName);
			}
		}
		
	}
}