geometry paint問題

[shape]

研究緊點model仙人掌
上網搵到一頁教學
http://ndhaussy.free.fr/maya_object_spreading/
想跟佢第一個方法做
但有3個問題
1)點樣令paint個樣野好似教學咁系腳癡住個球表面?
我做個陣系d方向亂曬之余仲完全遠離個目標(如圖)
2)paint點控制?如果我想click一下就出一舊要點set?而家要drag先有野出而且一出就幾舊.
3)geometry paint settings個d setting點解?我隨左geometry個格知道要做乜之外其他全部唔知點解.

[CraZ3D]

/簡單講下/
注意 .
1)三角cone要在 原位
2)click "Align"就會跟貼, 其他你跟我圖 click都得,其他自己玩下喇
3)留意Target 個波要有 UV set , 無UV唔得架 .

[stantang]

Also it's the pivot of the geometry will affect how it will be place on the target. Example, you will want to put the pivot to the bottom of the cone. It's better to freeze the transformation as well.

[shape]

1)真系要放原位先得，但點解要放原位呢？
2)點樣check個target有冇uv set?
3)我做個陣如果paint唔同方位個支針個方向都唔同(如圖).點解會咁?(control個度全部冇tick)
如果想全部位支針個方向都向上要點做?
4)freeze transformation會唔會freeze埋個pivot?
5)點樣令到paint個陣d針既size跟實物一樣?我而家系大舊好多(支針已經freeze左)