Click face of patch object

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Sebastian
Sebastian 2015-5-14
回答： Chad Greene 2015-5-14
Hello,
I use patch(X, Y, Z, C) to view a 3D model and compute values for each face. I would like to click a face and get its value returned, thus I need the number of the face. I know there is the PickableParts property and ButtonDownFcn but I do not know how to implement this function. Ginput is not going to work either since it only captures mouse click coordinates. However I might be able to use these coordinates and the camera position to draw a line and work out which faces this line intersect, but this seems to be to much of an effort. Does anybody know a neat way to solve this problem?
Thank you for your answers

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回答（1 个）

Chad Greene
Chad Greene 2015-5-14
Perhaps ginput to get the mouse click coordinates, then you could use inpolygon to determine if the user clicked in a given polygon defined by the outline of each patch object. The solution is clunky and probably computationally slow, but it should get the job done.

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