114 lines
3.9 KiB
C#
114 lines
3.9 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="GeometryOperation"
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// Project: StgSharp
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// AuthorGroup: Nitload
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// Copyright (c) Nitload. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// -----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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using StgSharp.Mathematics.Graphics;
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using StgSharp.Timing;
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using System;
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using System.Runtime.InteropServices;
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namespace StgSharp.Geometries
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{
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[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
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public delegate Vec3 GeometryMotionDelegate(TimeSpanProvider timeSource, out float rotation);
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public class GeometryMotion
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{
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private bool isIncrementMode;
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private bool sourceIsStatic;
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private GeometryMotionDelegate movement;
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private IntPtr handle;
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private TimeSpanProvider time;
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public unsafe GeometryMotion(
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bool isIncreament,
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TimeSpanProvider timeSource,
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GeometryMotionDelegate motionDelegate)
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{
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isIncrementMode = isIncreament;
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time = timeSource;
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if (motionDelegate == null)
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{
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handle = (IntPtr)(delegate*<TimeSpanProvider, out float, Vec3>)&defaultMotion;
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movement = defaultMotion;
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} else if (motionDelegate.Method.IsStatic)
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{
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sourceIsStatic = true;
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handle = Marshal.GetFunctionPointerForDelegate(motionDelegate);
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movement = motionDelegate;
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} else
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{
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movement = motionDelegate;
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}
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// sourceIsStatic = false;
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}
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public bool IsIncrement
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{
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get => isIncrementMode;
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}
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public static GeometryMotion DefaultMotion
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{
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get => new GeometryMotion(true, null, null);
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}
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public unsafe void RunMotion(ref Vec3 coord, ref float rotation)
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{
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float rot;
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Vec3 vec;
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if (sourceIsStatic)
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{
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vec = ((delegate* unmanaged[Cdecl]<TimeSpanProvider, out float, Vec3>)handle)(
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time, out rot);
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} else
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{
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vec = movement(time, out rot);
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}
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if (isIncrementMode)
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{
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coord += vec;
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rotation += rot;
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} else
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{
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coord = vec;
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rotation = rot;
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}
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}
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private static Vec3 defaultMotion(TimeSpanProvider provider, out float rotation)
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{
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rotation = 0;
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return Vec3.Zero;
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}
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}//------------------------------- End of Class -------------------------------
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}
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