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add CALayerTransformSpec

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This commit is contained in:
Paul Zabelin
2018-02-19 17:02:53 -08:00
parent 18226612e4
commit 4e166f91bf
3 changed files with 70 additions and 2 deletions
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27
Example/Tests/CALayerTransformSpec.swift Normal file
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@@ -0,0 +1,27 @@
import Quick
import Nimble
import QuartzCore
@testable import PerspectiveTransform
class CALayerTransformSpec: QuickSpec {
override func spec() {
describe("CALayer.transform") {
context("translation") {
it("should have x,y,z") {
let transform = CATransform3DMakeTranslation(1, 2, 3)
let layer = CALayer()
layer.transform = transform
var translate = Vector3Type()
translate.x = layer.value(forKeyPath: "transform.translation.x") as! Double
translate.y = layer.value(forKeyPath: "transform.translation.y") as! Double
translate.z = layer.value(forKeyPath: "transform.translation.z") as! Double
expect(translate.x) == 1
expect(translate.y) == 2
expect(translate.z) == 3
}
}
}
}
}

41
Example/Tests/CATransform3Dfrom2DSpec.swift
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@@ -41,10 +41,14 @@ class CATransform3Dfrom2DSpec: QuickSpec {
context("random matrix") {
let source = GKRandomSource.sharedRandom()
var matrix: Matrix3x3Type!
beforeEach {
matrix = source.nextMatrix()
}
it("should have zeros in third column and row") {
let projection2D = source.nextMatrix()
let projection3D = projection2D.to3d()
let projection3D = matrix.to3d()
let third = 2
expect(projection3D[0,third]) == 0
expect(projection3D[1,third]) == 0
@@ -56,6 +60,39 @@ class CATransform3Dfrom2DSpec: QuickSpec {
expect(projection3D[third,2]) == 1
expect(projection3D[third,3]) == 0
}
context("layer") {
it("should have components") {
let transform = CATransform3D(matrix.to3d())
let layer = CALayer()
layer.transform = transform
var scale = Vector3Type()
scale.x = layer.value(forKeyPath: "transform.scale.x") as! Double
scale.y = layer.value(forKeyPath: "transform.scale.y") as! Double
scale.z = layer.value(forKeyPath: "transform.scale.z") as! Double
let madeScale = CATransform3DMakeScale(CGFloat(scale.x), CGFloat(scale.y), CGFloat(scale.z))
print("madeScale:",madeScale)
var translate = Vector3Type()
translate.x = layer.value(forKeyPath: "transform.translation.x") as! Double
translate.y = layer.value(forKeyPath: "transform.translation.y") as! Double
translate.z = layer.value(forKeyPath: "transform.translation.z") as! Double
let madeTranslation = CATransform3DMakeTranslation(CGFloat(translate.x), CGFloat(translate.y), CGFloat(translate.z))
print("madeTranslation:",madeTranslation)
var rotate = Vector3Type()
rotate.x = layer.value(forKeyPath: "transform.rotation.x") as! Double
rotate.y = layer.value(forKeyPath: "transform.rotation.y") as! Double
rotate.z = layer.value(forKeyPath: "transform.rotation.z") as! Double
print("scale, translate, rotate = ", scale, translate, rotate)
let b = atan(transform.m12/transform.m22)
let p = asin(transform.m32)
let h = atan(transform.m31/transform.m33)
let angle = b*b + p*p + h*h
let madeRotation = CATransform3DMakeRotation(angle, b, p, h)
print("madeRotation:",madeRotation)
}
}
}
}
}