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173 lines
5.8 KiB
173 lines
5.8 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8" />
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<base href="../../../" />
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<script src="page.js"></script>
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<link type="text/css" rel="stylesheet" href="page.css" />
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</head>
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<body>
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<h1>[name]</h1>
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<p class="desc">
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A geometric triangle as defined by three [page:Vector3 Vector3s] representing its
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three corners.
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</p>
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<h2>Constructor</h2>
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<h3>[name]( [param:Vector3 a], [param:Vector3 b], [param:Vector3 c] )</h3>
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<p>
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[page:Vector3 a] - the first corner of the triangle. Default is a [page:Vector3] at `(0, 0, 0)`.<br />
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[page:Vector3 b] - the second corner of the triangle. Default is a [page:Vector3] at `(0, 0, 0)`.<br />
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[page:Vector3 c] - the final corner of the triangle. Default is a [page:Vector3] at `(0, 0, 0)`.<br /><br />
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Creates a new [name].
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</p>
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<h2>Properties</h2>
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<h3>[property:Vector3 a]</h3>
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<p>
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The first corner of the triangle. Default is a [page:Vector3] at `(0, 0, 0)`.
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</p>
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<h3>[property:Vector3 b]</h3>
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<p>
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The second corner of the triangle. Default is a [page:Vector3] at `(0, 0, 0)`.
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</p>
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<h3>[property:Vector3 c]</h3>
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<p>
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The final corner of the triangle. Default is a [page:Vector3] at `(0, 0, 0)`.
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</p>
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<h2>Methods</h2>
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<h3>[method:Triangle clone]()</h3>
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<p>
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Returns a new triangle with the same [page:.a a], [page:.b b] and [page:.c c] properties as this one.
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</p>
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<h3>[method:Vector3 closestPointToPoint]( [param:Vector3 point], [param:Vector3 target] )</h3>
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<p>
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[page:Vector3 point] - [page:Vector3] <br />
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[page:Vector3 target] — the result will be copied into this Vector3.<br /><br />
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Returns the closest point on the triangle to [page:Vector3 point].
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</p>
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<h3>[method:Boolean containsPoint]( [param:Vector3 point] )</h3>
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<p>
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[page:Vector3 point] - [page:Vector3] to check.<br /><br />
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Returns true if the passed point, when projected onto the plane of the triangle, lies within the triangle.
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</p>
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<h3>[method:this copy]( [param:Triangle triangle] )</h3>
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<p>
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Copies the values of the passed triangles's [page:.a a], [page:.b b] and [page:.c c]
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properties to this triangle.
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</p>
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<h3>[method:Boolean equals]( [param:Triangle triangle] )</h3>
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<p>
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Returns true if the two triangles have identical [page:.a a], [page:.b b] and [page:.c c] properties.
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</p>
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<h3>[method:Float getArea]()</h3>
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<p>Return the area of the triangle.</p>
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<h3>[method:Vector3 getBarycoord]( [param:Vector3 point], [param:Vector3 target] )</h3>
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<p>
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[page:Vector3 point] - [page:Vector3] <br />
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[page:Vector3 target] — the result will be copied into this Vector3.<br /><br />
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Return a [link:https://en.wikipedia.org/wiki/Barycentric_coordinate_system barycentric coordinate]
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from the given vector. <br/><br/>
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[link:http://commons.wikimedia.org/wiki/File:Barycentric_coordinates_1.png Picture of barycentric coordinates]
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</p>
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<h3>[method:Vector3 getMidpoint]( [param:Vector3 target] )</h3>
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<p>
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[page:Vector3 target] — the result will be copied into this Vector3.<br /><br />
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Calculate the midpoint of the triangle.
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</p>
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<h3>[method:Vector3 getNormal]( [param:Vector3 target] )</h3>
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<p>
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[page:Vector3 target] — the result will be copied into this Vector3.<br /><br />
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Calculate the [link:https://en.wikipedia.org/wiki/Normal_(geometry) normal vector] of the triangle.
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</p>
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<h3>[method:Plane getPlane]( [param:Plane target] )</h3>
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<p>
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[page:Plane target] — the result will be copied into this Plane.<br /><br />
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Calculate a [page:Plane plane] based on the triangle. .
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</p>
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<h3>[method:Vector2 getUV]( [param:Vector3 point], [param:Vector2 uv1], [param:Vector2 uv2], [param:Vector2 uv3], [param:Vector2 target] )</h3>
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<p>
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[page:Vector3 point] - The point on the triangle.<br />
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[page:Vector2 uv1] - The uv coordinate of the triangle's first vertex.<br />
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[page:Vector2 uv2] - The uv coordinate of the triangle's second vertex.<br />
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[page:Vector2 uv3] - The uv coordinate of the triangle's third vertex.<br />
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[page:Vector2 target] — the result will be copied into this Vector2.<br /><br />
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Returns the uv coordinates for the given point on the triangle.
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</p>
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<h3>[method:Boolean intersectsBox]( [param:Box3 box] )</h3>
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<p>
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[page:Box3 box] - Box to check for intersection against.<br /><br />
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Determines whether or not this triangle intersects [page:Box3 box].
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</p>
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<h3>[method:Boolean isFrontFacing]( [param:Vector3 direction] )</h3>
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<p>
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[page:Vector3 direction] - The direction to test.<br /><br />
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Whether the triangle is oriented towards the given direction or not.
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</p>
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<h3>[method:this set]( [param:Vector3 a], [param:Vector3 b], [param:Vector3 c] ) [param:Triangle this]</h3>
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<p>
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Sets the triangle's [page:.a a], [page:.b b] and [page:.c c] properties to the passed [page:Vector3 vector3s].<br>
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Please note that this method only copies the values from the given objects.
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</p>
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<h3>[method:this setFromAttributeAndIndices]( [param:BufferAttribute attribute], [param:Integer i0], [param:Integer i1], [param:Integer i2] ) [param:Triangle this]</h3>
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<p>
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attribute - [page:BufferAttribute] of vertex data <br />
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i0 - [page:Integer] index <br />
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i1 - [page:Integer] index <br />
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i2 - [page:Integer] index<br /><br />
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Sets the triangle's vertices from the buffer attribute vertex data.
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</p>
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<h3>[method:this setFromPointsAndIndices]( [param:Array points], [param:Integer i0], [param:Integer i1], [param:Integer i2] ) [param:Triangle this]</h3>
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<p>
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points - [page:Array] of [page:Vector3]s <br />
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i0 - [page:Integer] index <br />
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i1 - [page:Integer] index <br />
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i2 - [page:Integer] index<br /><br />
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Sets the triangle's vectors to the vectors in the array.
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</p>
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<h2>Source</h2>
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<p>
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[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
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</p>
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</body>
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</html>
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