87 lines
3.4 KiB
C#
87 lines
3.4 KiB
C#
//-----------------------------------------------------------------------
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// -----------------------------------------------------------------------
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// file="Plain"
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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;
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using StgSharp.Mathematics.Graphics;
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using System.Numerics;
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namespace StgSharp.Geometries
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{
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public unsafe class Plain
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{
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internal readonly float d = -1;
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internal Vec3 _origin;
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internal Vec3 plainParameter;
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internal Vec3 vec1;
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internal Vec3 vec2;
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public Plain(Vec3 o, Vec3 v1, Vec3 v2)
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{
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this._origin = o;
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this.vec1 = v1 - (v2 * (v1.Y / v2.Y)); //xz
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this.vec2 = v2 - (vec1 * (v2.X / v1.X)); //yz
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// |_origin|-k1*|vec1|-k2*|vec2| --> plainParameter.Z；
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plainParameter.Z = _origin.Z - (vec1.Z * (_origin.X / vec1.X)) - (vec2.Z * (_origin.Y / vec2.Y));
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// plainParameter.Z -> plainParameter.X, plainParameter.Y
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plainParameter.X = vec1.X * (vec1.Z / plainParameter.Z);
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plainParameter.Y = vec2.Y * (vec2.Z / plainParameter.Z);
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plainParameter.X = 1 / plainParameter.X;
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plainParameter.Y = 1 / plainParameter.Y;
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plainParameter.Z = 1 / plainParameter.Z;
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}
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public Plain(Point p1, Point p2, Point p3)
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{
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Vec3 origin = p1.Coord;
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Vec3 v1 = p2.Coord - origin;
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Vec3 v2 = p3.Coord - origin;
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vec1 = v1 - (v2 * (v1.Y / v2.Y)); //xz
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vec2 = v2 - (vec1 * (v2.X / v1.X)); //yz
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// |_origin|-k1*|vec1|-k2*|vec2| --> plainParameter.Z；
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plainParameter.Z = origin.Z - (vec1.Z * (origin.X / vec1.X)) - (vec2.Z * (origin.Y / vec2.Y));
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// plainParameter.Z --> plainParameter.X, plainParameter.Y
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plainParameter.X = vec1.X * (vec1.Z / plainParameter.Z);
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plainParameter.Y = vec2.Y * (vec2.Z / plainParameter.Z);
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plainParameter.X = 1 / plainParameter.X;
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plainParameter.Y = 1 / plainParameter.Y;
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plainParameter.Z = 1 / plainParameter.Z;
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}
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}
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}
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