Takes a point and puts it through the transformation matrix, handling translation, rotation and scaling at once. >>> context = FlatContext() >>> w = 800 >>> h = 600 >>> dx = 6 >>> dy = 8 >>> context.newPage(w, h) >>> x, y = 4, 5
(self, x, y, z=0)
| 369 | height = property(_get_height) |
| 370 | |
| 371 | def getTransformed(self, x, y, z=0): |
| 372 | """Takes a point and puts it through the transformation matrix, |
| 373 | handling translation, rotation and scaling at once. |
| 374 | |
| 375 | >>> context = FlatContext() |
| 376 | >>> w = 800 |
| 377 | >>> h = 600 |
| 378 | >>> dx = 6 |
| 379 | >>> dy = 8 |
| 380 | >>> context.newPage(w, h) |
| 381 | >>> x, y = 4, 5 |
| 382 | >>> p1 = context.getTransformed(x, y) |
| 383 | >>> p1 |
| 384 | (4.0, 595.0) |
| 385 | >>> context.translate(dx, dy) |
| 386 | >>> p1 = context.getTransformed(x, y) |
| 387 | >>> p1 |
| 388 | (10.0, 587.0) |
| 389 | >>> p1[0] == 4 + dx |
| 390 | True |
| 391 | >>> p1[1] == h - (dy + 5) |
| 392 | True |
| 393 | >>> context.scale(2) |
| 394 | >>> p2 = context.getTransformed(x, y) |
| 395 | >>> p2[0] == (4 * 2) + dx |
| 396 | True |
| 397 | >>> p2[1] == h - ((5 * 2) + dy) |
| 398 | True |
| 399 | >>> p2 |
| 400 | (14.0, 582.0) |
| 401 | """ |
| 402 | p0 = (x, y, z) |
| 403 | p1 = self.transform3D.transformPoint(p0) |
| 404 | x1, y1, _ = p1 |
| 405 | |
| 406 | # Makes sure the page height has been initiated. |
| 407 | assert self.height |
| 408 | |
| 409 | '''Because the origin is at the bottom, like in DrawBot and as opposed |
| 410 | to Flat, we need to subtract all vertical coordinates from the page |
| 411 | height before an object gets placed. In case of (bounding) boxes, we |
| 412 | also need to subtract the box height.''' |
| 413 | |
| 414 | y1 = self.height - y1 |
| 415 | return upt(x1, y1) |
| 416 | |
| 417 | # S T A T E |
| 418 |