Three-dimensional model interactive method based on dynamitic depth hierarchy structure

Abstract

The invention discloses a three-dimensional model interactive method based on a dynamitic depth hierarchy structure. According to the method, after view transform, the depth hierarchy structure is reestablished, the hierarchy where the current edit point is located is found out according to depth information, and the editability of the current edit point is kept; and under the condition that shielded interest areas are popped up, after view transform, tracking of the interest areas is kept in the new depth hierarchy structure and the interest areas are automatically popped up. Support of tracking of the interest areas and popup algorithms is added in a static multi-layer drawing algorithm during view transform. Three-dimensional model navigation is controlled by strokes on the surface of three-dimensional models, the view transform direction and speed are consistent with the strokes, and current points of the strokes are always kept visible and fixed at the center of a window. The three-dimensional model interactive method solves the problems that original depth hierarchy structure information is lost during the view transform and processing time is too long in methods for performing surface properties of self-occlusion complex three-dimensional models in the prior art.

Description

technical field [0001] The invention mainly relates to the field of geometric model processing, in particular to a three-dimensional model interaction method based on a dynamic depth hierarchy. Background technique [0002] Geometric model processing is a very important operation in the fields of computer graphics, virtual reality, computer entertainment and computer-aided design. A conforming geometric model processing system allows users to efficiently and interactively process models. Using a specific 3D input device, such as a haptic sensor, to process the geometry model allows the user to have a high degree of freedom and a realistic experience. However, 3D input devices require additional costs and cannot edit surface properties for complex 3D models that are self-occluded. At the same time, many artists still prefer to use 2D input devices, such as a mouse, to process geometric models. In traditional 2D drawing, input devices such as a mouse have been used. If the ...

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Problems solved by technology

[0012] The present invention provides a 3D model interaction method based on a dynamic depth hierarchy. The method maintai

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