SphereColliderShape.cs

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// Copyright (c) 2014 Silicon Studio Corp. (http://siliconstudio.co.jp)
// This file is distributed under GPL v3. See LICENSE.md for details.
using SiliconStudio.Core.Mathematics;
using SiliconStudio.Paradox.Graphics;

namespace SiliconStudio.Paradox.Physics
{
    public class SphereColliderShape : ColliderShape
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="SphereColliderShape"/> class.
        /// </summary>
        /// <param name="is2D">if set to <c>true</c> [is2 d].</param>
        /// <param name="radius">The radius.</param>
        public SphereColliderShape(bool is2D, float radius)
        {
            Type = ColliderShapeTypes.Sphere;
            Is2D = is2D;

            Radius = radius;

            var shape = new BulletSharp.SphereShape(radius);

            if (Is2D)
            {
                InternalShape = new BulletSharp.Convex2DShape(shape) { LocalScaling = new Vector3(1, 1, 0) };
            }
            else
            {
                InternalShape = shape;
            }

            if (!PhysicsEngine.Singleton.CreateDebugPrimitives) return;
            DebugPrimitive = GeometricPrimitive.Sphere.New(PhysicsEngine.Singleton.DebugGraphicsDevice);
            DebugPrimitiveScaling = Matrix.Scaling(radius * 2 * 1.01f);
        }

        /// <summary>
        /// Gets the radius.
        /// </summary>
        /// <value>
        /// The radius.
        /// </value>
        public float Radius { get; private set; }
    }
}