233 lines
6.2 KiB
JavaScript
233 lines
6.2 KiB
JavaScript
describe("Matrix methods", function () {
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it("Matrix.add - matrix", function() {
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var matrix1 = new Snap.Matrix(1, 0, 0, 1, 5, 5);
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var matrix2 = new Snap.Matrix(1, 0, 0, 1, 10, 10);
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var result = matrix1.add(matrix2);
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expect(result).to.eql({
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a: 1,
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b: 0,
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c: 0,
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d: 1,
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e: 15,
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f: 15
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});
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// add two 90 degree rotations
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var matrix3 = new Snap.Matrix(0, 1, -1, 0, 0, 0);
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var matrix4 = new Snap.Matrix(0, 1, -1, 0, 0, 0);
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result = matrix3.add(matrix4);
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expect(result).to.eql({
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a: -1,
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b: 0,
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c: 0,
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d: -1,
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e: 0,
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f: 0
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});
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});
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it("Matrix.add - numbers", function() {
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var matrix1 = new Snap.Matrix(1, 0, 0, 1, 5, 5);
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var result = matrix1.add(1, 0, 0, 1, 10, 10);
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expect(result).to.eql({
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a: 1,
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b: 0,
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c: 0,
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d: 1,
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e: 15,
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f: 15
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});
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});
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it("Matrix.clone", function() {
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var matrix1 = new Snap.Matrix(1, 2, 3, 4, 5, 6);
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var clone = matrix1.clone();
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expect(clone).to.not.be(matrix1);
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expect(clone).to.eql({
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a: 1,
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b: 2,
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c: 3,
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d: 4,
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e: 5,
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f: 6
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});
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});
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it("Matrix.invert", function() {
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var matrix1 = new Snap.Matrix(1, 2, 3, 4, 5, 6);
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var inverse = matrix1.invert();
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expect(inverse).to.eql({
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a: -2,
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b: 1,
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c: 1.5,
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d: -0.5,
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e: 1,
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f: -2
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});
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});
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it("Matrix.rotate", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 0, 0);
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matrix.rotate(45, 0, 0);
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expect(+matrix.a.toFixed(3)).to.be(0.707);
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expect(+matrix.b.toFixed(3)).to.be(0.707);
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expect(+matrix.c.toFixed(3)).to.be(-0.707);
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expect(+matrix.d.toFixed(3)).to.be(0.707);
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expect(+matrix.e.toFixed(3)).to.be(0);
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expect(+matrix.f.toFixed(3)).to.be(0);
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});
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it("Matrix.scale - x", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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matrix.scale(2);
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expect(matrix).to.eql({
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a: 2,
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b: 0,
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c: 0,
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d: 2,
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e: 20,
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f: 30
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});
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matrix.scale(0.5);
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expect(matrix).to.eql({
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a: 1,
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b: 0,
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c: 0,
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d: 1,
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e: 20,
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f: 30
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});
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});
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it("Matrix.scale - x, y", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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matrix.scale(2, 3);
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expect(matrix).to.eql({
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a: 2,
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b: 0,
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c: 0,
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d: 3,
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e: 20,
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f: 30
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});
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matrix.scale(0.5, 1);
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expect(matrix).to.eql({
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a: 1,
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b: 0,
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c: 0,
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d: 3,
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e: 20,
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f: 30
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});
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});
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it("Matrix.scale - x, y, cx, cy", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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matrix.scale(2, 3, 5, -5);
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expect(matrix).to.eql({
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a: 2,
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b: 0,
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c: 0,
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d: 3,
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e: 15,
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f: 40
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});
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});
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it("Matrix.split", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 0, 0);
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var result = matrix.split();
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expect(result.dx).to.be(0);
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expect(result.dy).to.be(0);
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expect(result.scalex).to.be(1);
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expect(result.scaley).to.be(1);
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expect(result.shear).to.be(0);
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expect(result.rotate).to.be(0);
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expect(result.isSimple).to.be(true);
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matrix = new Snap.Matrix(1.5, 0, 0, 0.5, 20, 25);
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result = matrix.split();
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expect(result.dx).to.be(20);
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expect(result.dy).to.be(25);
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expect(result.scalex).to.be(1.5);
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expect(result.scaley).to.be(0.5);
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expect(result.shear).to.be(0);
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expect(result.rotate).to.be(0);
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expect(result.isSimple).to.be(true);
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});
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it("Matrix.toTransformString", function() {
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var matrix = new Snap.Matrix(1.5, 0, 0, 0.5, 20, 25);
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var str = matrix.toTransformString();
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var s = Snap(10, 10);
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var rect = s.rect(0, 0, 10, 20);
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rect.transform(str);
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var transform = rect.transform();
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expect(transform.localMatrix).to.eql({
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a: 1.5,
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b: 0,
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c: 0,
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d: 0.5,
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e: 20,
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f: 25
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});
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});
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it("Matrix.translate", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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matrix.translate(10, -10);
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expect(matrix).to.eql({
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a: 1,
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b: 0,
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c: 0,
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d: 1,
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e: 30,
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f: 20
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});
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matrix.translate(-1, -2);
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expect(matrix).to.eql({
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a: 1,
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b: 0,
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c: 0,
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d: 1,
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e: 29,
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f: 18
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});
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});
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it("Matrix.skewX", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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matrix.skewX(45);
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expect(matrix).to.eql({
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a: 1,
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b: 0,
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c: 1,
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d: 1,
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e: 20,
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f: 30
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});
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});
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it("Matrix.skewY", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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matrix.skewY(45);
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expect(matrix).to.eql({
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a: 1,
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b: 1,
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c: 0,
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d: 1,
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e: 20,
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f: 30
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});
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});
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it("Matrix.skew", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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matrix.skew(45, -45);
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expect(matrix).to.eql({
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a: 1,
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b: -1,
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c: 1,
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d: 1,
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e: 20,
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f: 30
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});
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});
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it("Matrix.x", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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var result = matrix.x(10, -10);
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expect(result).to.be(30);
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});
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it("Matrix.y", function() {
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var matrix = new Snap.Matrix(1, 0, 0, 1, 20, 30);
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var result = matrix.y(10, -10);
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expect(result).to.be(20);
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});
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}); |