97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
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#pragma once
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#include "Vector3.h"
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#include "CollisionsHelper.h"
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/// <summary>
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/// Represents a three dimensional triangle.
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/// </summary>
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struct Triangle
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{
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public:
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/// <summary>
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/// The first vertex.
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/// </summary>
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Vector3 V0;
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/// <summary>
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/// The second vertex.
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/// </summary>
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Vector3 V1;
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/// <summary>
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/// The third vertex.
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/// </summary>
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Vector3 V2;
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public:
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/// <summary>
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/// Empty constructor.
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/// </summary>
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Triangle()
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="Triangle"/> struct.
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/// </summary>
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/// <param name="v0">The first vertex.</param>
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/// <param name="v1">The second vertex .</param>
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/// <param name="v2">The third vertex.</param>
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Triangle(const Vector3& v0, const Vector3& v1, const Vector3& v2)
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: V0(v0)
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, V1(v1)
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, V2(v2)
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{
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}
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public:
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// Determines if there is an intersection between the current object and a Ray
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// @param ray The ray to test
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// @returns Whether the two objects intersected
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bool Intersects(const Ray& ray) const
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{
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float distance;
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return CollisionsHelper::RayIntersectsTriangle(ray, V0, V1, V2, distance);
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}
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// Determines if there is an intersection between the current object and a Ray
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// @param ray The ray to test
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// @param distance When the method completes, contains the distance of the intersection, or 0 if there was no intersection
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// @returns Whether the two objects intersected
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bool Intersects(const Ray& ray, float& distance) const
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{
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return CollisionsHelper::RayIntersectsTriangle(ray, V0, V1, V2, distance);
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}
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// Determines if there is an intersection between the current object and a Ray
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// @param ray The ray to test
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// @param distance When the method completes, contains the distance of the intersection, or 0 if there was no intersection
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// @param normal When the method completes, contains the intersection surface normal vector, or Vector3::Up if there was no intersection
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// @returns Whether the two objects intersected
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bool Intersects(const Ray& ray, float& distance, Vector3& normal) const
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{
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return CollisionsHelper::RayIntersectsTriangle(ray, V0, V1, V2, distance, normal);
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}
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// Determines if there is an intersection between the current object and a Ray
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// @param ray The ray to test
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// @param point When the method completes, contains the point of intersection, or <see cref="Vector3.Zero"/> if there was no intersection
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// @returns Whether the two objects intersected
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bool Intersects(const Ray& ray, Vector3& point) const
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{
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return CollisionsHelper::RayIntersectsTriangle(ray, V0, V1, V2, point);
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}
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};
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template<>
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struct TIsPODType<Triangle>
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{
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enum { Value = true };
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};
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