1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
|
describe('Matrix', function() {
let comp = {a:2, b:0, c:0, d:2, e:100, f:50}
describe('initialization', function() {
it('creates a new matrix with default values', function() {
let matrix = new SVG.Matrix()
expect(matrix).toEqual(jasmine.objectContaining(
{a:1, b:0, c:0, d:1, e:0, f:0}
))
})
it('parses the current transform matrix from an element', function() {
let rect = draw.rect(100, 100).transform(comp)
let matrix = new SVG.Matrix(rect)
expect(matrix).toEqual(jasmine.objectContaining(comp))
})
it('parses a string value correctly', function() {
let matrix = new SVG.Matrix('2, 0, 0, 2, 100, 50')
expect(matrix).toEqual(jasmine.objectContaining(comp))
})
it('parses an array correctly', function() {
let matrix = new SVG.Matrix([2, 0, 0, 2, 100, 50])
expect(matrix).toEqual(jasmine.objectContaining(comp))
})
it('parses an object correctly', function() {
let matrix = new SVG.Matrix(comp)
expect(matrix).toEqual(jasmine.objectContaining(comp))
})
it('parses a transform object correctly', function() {
let matrix = new SVG.Matrix({scale: 2, translate: [100, 50]})
expect(matrix).toEqual(jasmine.objectContaining(comp))
})
it('parses 6 arguments correctly', function() {
let matrix = new SVG.Matrix(2, 0, 0, 2, 100, 50)
expect(matrix).toEqual(jasmine.objectContaining(comp))
})
})
describe('toString()' , function() {
it('exports correctly to a string', function() {
expect(new SVG.Matrix().toString()).toBe('matrix(1,0,0,1,0,0)')
})
})
describe('compose()', function() {
it('composes a matrix to form the correct result', function() {
let composed = new SVG.Matrix().compose({
scaleX: 3, scaleY: 20, shear: 4, rotate: 50, translateX: 23, translateY: 52,
})
let expected = new SVG.Matrix().scale(3, 20).shear(4).rotate(50).translate(23, 52)
expect(composed).toEqual(expected)
})
})
describe('decompose()', function () {
it('decomposes a matrix properly', function () {
var matrix = new SVG.Matrix().scale(3, 2.5).shear(4).rotate(30).translate(20, 30)
var decomposed = matrix.decompose()
expect(decomposed.scaleX).toBeCloseTo(3)
expect(decomposed.scaleY).toBeCloseTo(2.5)
expect(decomposed.shear).toBeCloseTo(4)
expect(decomposed.rotate).toBeCloseTo(30)
expect(decomposed.translateX).toBeCloseTo(20)
expect(decomposed.translateY).toBeCloseTo(30)
})
it('can be recomposed to the same matrix', function () {
var matrix = new SVG.Matrix().scale(3, 2.5).shear(4).rotate(30).translate(20, 30)
var decomposed = matrix.decompose()
var composed = new SVG.Matrix().compose(decomposed)
expect(matrix.a).toBeCloseTo(composed.a)
expect(matrix.b).toBeCloseTo(composed.b)
expect(matrix.c).toBeCloseTo(composed.c)
expect(matrix.d).toBeCloseTo(composed.d)
expect(matrix.e).toBeCloseTo(composed.e)
expect(matrix.f).toBeCloseTo(composed.f)
})
})
describe('clone()', function() {
it('returns a clone of the matrix', function() {
var matrix = new SVG.Matrix(2, 0, 0, 5, 0, 0)
, clone = matrix.clone()
expect(matrix).not.toBe(clone)
for(var i in 'abcdef') {
expect(matrix[i]).toEqual(clone[i])
}
})
})
describe('multiply()', function() {
it('multiplies two matrices', function() {
var matrix1 = new SVG.Matrix(1, 4, 2, 5, 3, 6)
, matrix2 = new SVG.Matrix(7, 8, 8, 7, 9, 6)
, matrix3 = matrix1.multiply(matrix2)
expect(matrix1.toString()).toBe('matrix(1,4,2,5,3,6)')
expect(matrix2.toString()).toBe('matrix(7,8,8,7,9,6)')
expect(matrix3.toString()).toBe('matrix(23,68,22,67,24,72)')
})
it('accepts matrices in any form', function() {
var matrix1 = new SVG.Matrix(1, 4, 2, 5, 3, 6)
, matrix2 = matrix1.multiply('7,8,8,7,9,6')
expect(matrix1.toString()).toBe('matrix(1,4,2,5,3,6)')
expect(matrix2.toString()).toBe('matrix(23,68,22,67,24,72)')
})
})
describe('inverse()', function() {
it('inverses matrix', function() {
var matrix1 = new SVG.Matrix(2, 0, 0, 5, 4, 3)
, matrix2 = matrix1.inverse()
, abcdef = [0.5, 0, 0, 0.2, -2, -0.6]
for(var i in 'abcdef') {
expect(matrix2['abcdef'[i]]).toBeCloseTo(abcdef[i])
}
})
})
describe('translate()', function() {
it('translates matrix by given x and y values', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).translate(10, 12.5)
expect(matrix.e).toBe(14)
expect(matrix.f).toBe(15.5)
})
it('does nothing if you give it no x or y value', function() {
var matrix = new SVG.Matrix(1, 2, 3, 4, 5, 6).translate()
expect(matrix.e).toBe(5)
expect(matrix.f).toBe(6)
})
})
describe('scale()', function() {
it('performs a uniformal scale with one value', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).scale(3)
expect(matrix.a).toBe(3)
expect(matrix.d).toBe(3)
expect(matrix.e).toBe(4 * 3)
expect(matrix.f).toBe(3 * 3)
})
it('performs a non-uniformal scale with two values', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).scale(2.5, 3.5)
expect(matrix.a).toBe(2.5)
expect(matrix.d).toBe(3.5)
expect(matrix.e).toBe(4 * 2.5)
expect(matrix.f).toBe(3 * 3.5)
})
it('performs a uniformal scale at a given center point with three values', function() {
var matrix = new SVG.Matrix(1, 3, 2, 3, 4, 3).scale(3, 2, 3)
expect(matrix.a).toBe(3)
expect(matrix.b).toBe(9)
expect(matrix.c).toBe(6)
expect(matrix.d).toBe(9)
expect(matrix.e).toBe(8)
expect(matrix.f).toBe(3)
})
it('performs a non-uniformal scale at a given center point with four values', function() {
var matrix = new SVG.Matrix(1, 3, 2, 3, 4, 3).scale(3, 2, 2, 3)
expect(matrix.a).toBe(3)
expect(matrix.b).toBe(6)
expect(matrix.c).toBe(6)
expect(matrix.d).toBe(6)
expect(matrix.e).toBe(8)
expect(matrix.f).toBe(3)
})
})
describe('rotate()', function() {
it('performs a rotation with one argument', function() {
var matrix = new SVG.Matrix(1, 3, 2, 3, 4, 3).rotate(30)
expect(matrix.a).toBeCloseTo(-0.6339746)
expect(matrix.b).toBeCloseTo(3.09807621)
expect(matrix.c).toBeCloseTo(0.23205081)
expect(matrix.d).toBeCloseTo(3.59807621)
expect(matrix.e).toBeCloseTo(1.96410162)
expect(matrix.f).toBeCloseTo(4.59807621)
})
it('performs a rotation around a given point with three arguments', function() {
var matrix = new SVG.Matrix(1, 3, 2, 3, 4, 3).rotate(30, 2, 3)
expect(matrix.a).toBeCloseTo(-0.633974596216)
expect(matrix.b).toBeCloseTo(3.09807621135)
expect(matrix.c).toBeCloseTo(0.232050807569)
expect(matrix.d).toBeCloseTo(3.59807621135)
expect(matrix.e).toBeCloseTo(3.73205080757)
expect(matrix.f).toBeCloseTo(4.0)
})
})
describe('flip()', function() {
describe('with x given', function() {
it('performs a flip over the horizontal axis with one argument', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).flip('x')
expect(matrix.a).toBe(-1)
expect(matrix.d).toBe(1)
expect(matrix.e).toBe(-4)
expect(matrix.f).toBe(3)
})
it('performs a flip over the horizontal axis over a given point with two arguments', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).flip('x', 150)
expect(matrix.a).toBe(-1)
expect(matrix.d).toBe(1)
expect(matrix.e).toBe(296)
expect(matrix.f).toBe(3)
})
})
describe('with y given', function() {
it('performs a flip over the vertical axis with one argument', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).flip('y')
expect(matrix.a).toBe(1)
expect(matrix.d).toBe(-1)
expect(matrix.e).toBe(4)
expect(matrix.f).toBe(-3)
})
it('performs a flip over the vertical axis over a given point with two arguments', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).flip('y', 100)
expect(matrix.a).toBe(1)
expect(matrix.d).toBe(-1)
expect(matrix.e).toBe(4)
expect(matrix.f).toBe(197)
})
})
describe('with no axis given', function() {
it('performs a flip over the horizontal and vertical axis with no argument', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).flip()
expect(matrix.a).toBe(-1)
expect(matrix.d).toBe(-1)
expect(matrix.e).toBe(-4)
expect(matrix.f).toBe(-3)
})
it('performs a flip over the horizontal and vertical axis over a given point with one argument that represent both coordinates', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).flip(100)
expect(matrix.a).toBe(-1)
expect(matrix.d).toBe(-1)
expect(matrix.e).toBe(196)
expect(matrix.f).toBe(197)
})
it('performs a flip over the horizontal and vertical axis over a given point with two arguments', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).flip(50, 100)
expect(matrix.a).toBe(-1)
expect(matrix.d).toBe(-1)
expect(matrix.e).toBe(96)
expect(matrix.f).toBe(197)
})
})
})
describe('skew()', function() {
it('performs a uniformal skew with one value', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skew(30)
expect(matrix.a).toBe(1)
expect(matrix.b).toBeCloseTo(0.57735026919)
expect(matrix.c).toBeCloseTo(0.57735026919)
expect(matrix.d).toBe(1)
expect(matrix.e).toBeCloseTo(5.73205080757)
expect(matrix.f).toBeCloseTo(5.30940107676)
})
it('performs a non-uniformal skew with two values', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skew(30, 20)
expect(matrix.a).toBe(1)
expect(matrix.b).toBeCloseTo(0.363970234266)
expect(matrix.c).toBeCloseTo(0.57735026919)
expect(matrix.d).toBe(1)
expect(matrix.e).toBeCloseTo(5.73205080757)
expect(matrix.f).toBeCloseTo(4.45588093706)
})
it('performs a uniformal skew at a given center point with three values', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skew(30, 150, 100)
expect(matrix.a).toBe(1)
expect(matrix.b).toBeCloseTo(0.57735026919)
expect(matrix.c).toBeCloseTo(0.57735026919)
expect(matrix.d).toBe(1)
expect(matrix.e).toBeCloseTo(-52.0029761114)
expect(matrix.f).toBeCloseTo(-81.2931393017)
})
it('performs a non-uniformal skew at a given center point with four values', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skew(30, 20, 150, 100)
expect(matrix.a).toBe(1.0)
expect(matrix.b).toBeCloseTo(0.363970234266)
expect(matrix.c).toBeCloseTo(0.57735026919)
expect(matrix.d).toBe(1.0)
expect(matrix.e).toBeCloseTo(-52.0029761114)
expect(matrix.f).toBeCloseTo(-50.1396542029)
})
it('can be chained', function(){
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skew(20, 30).skew(30, 20)
expect(matrix.a).toBeCloseTo(1.33333333333)
expect(matrix.b).toBeCloseTo(0.941320503456)
expect(matrix.c).toBeCloseTo(0.941320503456)
expect(matrix.d).toBeCloseTo(1.13247433143)
expect(matrix.e).toBeCloseTo(8.1572948437)
expect(matrix.f).toBeCloseTo(7.16270500812)
})
})
describe('skewX', function(){
it('performs a skew along the x axis with one value', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skewX(30)
expect(matrix.a).toBe(1)
expect(matrix.b).toBe(0)
expect(matrix.c).toBeCloseTo(0.57735026919)
expect(matrix.d).toBe(1)
expect(matrix.e).toBeCloseTo(5.73205080757)
expect(matrix.f).toBe(3)
})
it('performs a skew along the x axis at a given center point with three values', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skewX(30, 150, 100)
expect(matrix.a).toBe(1)
expect(matrix.b).toBe(0)
expect(matrix.c).toBeCloseTo(0.57735026919)
expect(matrix.d).toBe(1)
expect(matrix.e).toBeCloseTo(-52.0029761114)
expect(matrix.f).toBe(3)
})
})
describe('skewY', function(){
it('performs a skew along the y axis with one value', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skewY(30)
expect(matrix.a).toBe(1)
expect(matrix.b).toBeCloseTo(0.57735026919)
expect(matrix.c).toBe(0)
expect(matrix.d).toBe(1)
expect(matrix.e).toBe(4)
expect(matrix.f).toBeCloseTo(5.30940107676)
})
it('performs a skew along the y axis at a given center point with three values', function() {
var matrix = new SVG.Matrix(1, 0, 0, 1, 4, 3).skewY(30, 150, 100)
expect(matrix.a).toBe(1)
expect(matrix.b).toBeCloseTo(0.57735026919)
expect(matrix.c).toBe(0)
expect(matrix.d).toBe(1)
expect(matrix.e).toBe(4)
expect(matrix.f).toBeCloseTo(-81.2931393017)
})
})
})
|
