/
main.coffee
116 lines (89 loc) · 2.55 KB
/
main.coffee
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runTest = require 'ava'
clone = require 'clone'
Vector = require '@datatypes/vector'
Point = require '@datatypes/point'
Face = require '../index'
vertex1 = new Point 1, 0, 0
vertex2 = new Point 0, 1, 0
vertex3 = new Point 0, 0, 1
vertices = [vertex1, vertex2, vertex3]
normal = new Vector 0.5773502691896258, 0.5773502691896258, 0.5773502691896258
runTest 'Instantiates a new face', (test) ->
face = new Face()
test.same face.toObject(), {vertices: []}
runTest 'Instantiates a new face from an array of vertices', (test) ->
face = Face.fromVertexArray clone vertices
test.same(
face.toObject(),
{
vertices: clone(vertices).map (vertex) -> vertex.toObject()
}
)
runTest 'Instantiates a new face from an plain javascript object', (test) ->
face = Face.fromObject {
vertices: clone vertices
normal: clone normal
}
test.same(
face.toObject(),
{
vertices: clone(vertices).map (vertex) -> vertex.toObject()
normal: clone(normal).toObject()
}
)
runTest 'Creates a face by adding vertices', (test) ->
face = new Face()
.addVertex clone vertex1
.addVertex clone vertex2
.addVertex clone vertex3
test.same face.toObject(), {
vertices: clone(vertices).map (vertex) -> vertex.toObject()
}
runTest 'Removes a vertex', (test) ->
face = new Face clone vertices
.removeVertex 1
test.same face.toObject(), {
vertices: clone vertices
.filter (vertex, index) -> index isnt 1
.map (vertex) -> vertex.toObject()
}
runTest 'Calculate the normal', (test) ->
face = Face
.fromVertexArray clone vertices
.calculateNormal()
test.same face.toObject(), {
vertices: clone(vertices).map (vertex) -> vertex.toObject()
normal: clone(normal).toObject()
}
runTest 'Get the normal', (test) ->
normal = Face
.fromVertexArray clone vertices
.getNormal()
test.same normal, clone normal
runTest 'Calculates surface area', (test) ->
face = Face
.fromVertexArray clone vertices
.calculateSurfaceArea()
test.same face.toObject(), {
vertices: clone(vertices).map (vertex) -> vertex.toObject()
surfaceArea: 0.8660254037844386
}
runTest 'Get the surface area', (test) ->
surfaceArea = Face
.fromVertexArray clone vertices
.getSurfaceArea()
test.same surfaceArea, 0.8660254037844386
runTest 'Convert to JSON', (test) ->
face = new Face clone(vertices), clone(normal)
jsonString =
'{"vertices": [
{"x":1,"y":0,"z":0},
{"x":0,"y":1,"z":0},
{"x":0,"y":0,"z":1}
],
"normal": {
"x":0.5773502691896258,
"y":0.5773502691896258,
"z":0.5773502691896258}
}'
test.same JSON.stringify(face), jsonString.replace(/\s/g, '')