How can we obtain the 3D shape of a blade? trueSpace has various tools to model such shape, but an easy way to make similar shape is to use the intersection of a cone and a cylinder.
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Please note that the cone's axis of rotation and the cylinder's one are not on a plane.
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The image above is the section of the cone after BooleanIntersectionWithCurrobj().
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Sliced the section with a cylinder with the same shape.
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It's not difficult to add hierarchical rotation for trueSpace as long as the grouping of parts is done properly.
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