Board logo

标题: 也试椭圆滚动 [打印本页]

作者: inRm    时间: 2009-6-28 08:02     标题: 也试椭圆滚动

但凡滚动,必涉及弧长。而椭圆的弧长得用微积分计算!
inRm3D里,轨迹线长度原只是为拖动约束点而计算的,这里却间接的用于计算弧长了。
抛块砖,椭圆在直线上滚动:

图片附件: 滚动椭圆1.gif (2009-6-28 08:02, 293.85 KB) / 下载次数 0
http://forums.netpad.net.cn/attachment.php?aid=100&k=fe3ebdf9894f0a01bdf6321788ae3408&t=1765407918&sid=B1A0wP



附件: 滚动椭圆1.sgf (2009-6-28 08:02, 9.63 KB) / 下载次数 9
http://forums.netpad.net.cn/attachment.php?aid=101&k=b0a590d6fd5fadd1f910c35d20d7cb13&t=1765407918&sid=B1A0wP
作者: inRm    时间: 2009-6-28 08:04

稍加改动,就滚到圆周上了:

图片附件: 滚动椭圆2.gif (2009-6-28 08:04, 435.49 KB) / 下载次数 0
http://forums.netpad.net.cn/attachment.php?aid=102&k=a1262266ea1ceb4f9b701ed3a533739e&t=1765407918&sid=B1A0wP



附件: 滚动椭圆2.sgf (2009-6-28 08:04, 12.81 KB) / 下载次数 9
http://forums.netpad.net.cn/attachment.php?aid=103&k=5c63ba487716df9b18e93df4ce4bb0f1&t=1765407918&sid=B1A0wP
作者: zhchgao    时间: 2009-6-28 08:14

高手。学习了。
作者: namtran    时间: 2009-6-29 22:31

I can't open this file.  Please tell me Why?
Please tell me more how to plot poin A(-1;-1;-1).
Thanks.
作者: inRm    时间: 2009-6-30 09:11

Try new version please.
This question tell me a BUG, has been fixed. thank you very much!

图片附件: test.gif (2009-6-30 09:11, 5.21 KB) / 下载次数 0
http://forums.netpad.net.cn/attachment.php?aid=108&k=7bc9a944e5b5eab6ed4cf79e5490d6c1&t=1765407918&sid=B1A0wP






欢迎光临 inRm3D: 画板论坛 (http://forums.netpad.net.cn/) Powered by Discuz! 7.0.0