a question about object shielded
First I am so sorry about my poor English.
I am a Chinese graduate student. Nowadays, I'm coding a program about parachute. I meet some problems.
When parachute land on the earth, the rope of the parachute is above the earth. So the rope can be seen. But, to my surprise, the part of the rope which intersect to the earth is covered by the earth. it cannot be seen. I don't know why.
IndexedLineArray is used of making the rope of parachute. Earth is simply a quadrangle, and texture of the earth is a picture of grassland from Internet.
The state of parachute is always erect. It doesn't deform after it land on the earth.