wok
annotate libspiro/description.txt @ rev 20783
updated chemtool (1.6.12 -> 1.6.14)
| author |
Hans-G?nter Theisgen |
| date |
Thu Feb 14 15:04:32 2019 +0100 (2019-02-14) |
| parents |
|
| children |
|
| rev |
line source |
|
al@17914
|
1 Spiro is the creation of Raph Levien. It simplifies the drawing of beautiful
|
|
al@17914
|
2 curves.
|
|
al@17914
|
3
|
|
al@17914
|
4 Using bézier splines an artist can easily draw curves with the same slope on
|
|
al@17914
|
5 either side of an on-curve point. Spiros, on the other hand, are based on
|
|
al@17914
|
6 clothoid splines which make it easy to maintain constant curvature as well as
|
|
al@17914
|
7 constant slope. Such curves will simply look nicer.
|
|
al@17914
|
8
|
|
al@17914
|
9 Raph Levien's spiro splines only use on-curve points and so are easier to use
|
|
al@17914
|
10 and more intuitive to the artist.
|
|
al@17914
|
11
|
|
al@17914
|
12 This library will take an array of spiro control points and convert them into
|
|
al@17914
|
13 a series of bézier splines which can then be used in the myriad of ways the
|
|
al@17914
|
14 world has come to use béziers.
|