Example of (a) a cutting plane (perpendicular to the best viewpoint direction and passing through the center of mass cm of the inner level) and (b) testing for a stable papercraft composition.

Contexts in source publication

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... cut the other levels similarly ( Figure 5). Figure 6 shows the steps of the optimal cutting based on the viewpoint calculation. To provide the optimal cutting plane (C2, R2), we need to conduct the following steps. ...

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... we compute the center of mass cm of the meshes of the inner level and we place at this location the origin of our cutting plane. We retrieve the normal n from the viewpoint calculation, as described in the previous section (Figure 6 (a)). Subsequently, we clip the envelope mesh (between the outer and inner level) using the cutting plane as an implicit function. ...

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... cut should guarantee that the decomposed subparts will integrate well with each other. Otherwise, an unstable cut will cause the model to fall apart ( Figure 6 (b), left column), while a slightly adapted cut ensures a stable composition based on gravitational and frictional forces (Figure 6 (b), right column). The articulated body algorithm by Featherstone [Fea87] for physics simulation is sufficient for our simple scenes. ...

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... cut should guarantee that the decomposed subparts will integrate well with each other. Otherwise, an unstable cut will cause the model to fall apart ( Figure 6 (b), left column), while a slightly adapted cut ensures a stable composition based on gravitational and frictional forces (Figure 6 (b), right column). The articulated body algorithm by Featherstone [Fea87] for physics simulation is sufficient for our simple scenes. ...