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3D model selection method and device

A model selection and model technology, applied in the field of precise selection of designated models, can solve problems such as multiple missteps, inability to select models, difficulty in selecting object models, etc., to improve user experience, ease of use, accuracy and ease of use practical effect

Active Publication Date: 2020-10-02
CHENGDU CTC TIANFU DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the models are relatively small, clustered together or overlap with each other, it is difficult for users to select the object model they want to select, especially when the model is blocked or there are a lot of other models around. At this time, it may occur Many missed points, or other models must be moved or rotated before selection can be made, or even the target model cannot be selected at all
At the same time, using the traditional method, only the first detected model can be selected at a time, but not all models that can be collided in the ray direction, so it is difficult to select the fine model inside the model

Method used

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Embodiment Construction

[0033] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0034] figure 1 Select the way schematic for the prior art model. In the existing technology, when a click event is triggered, a collision detection ray is launched from the click point to multiple 3D models; when the ray hits the model, the first model it touches or the earliest touched Model name, and stop collision detection so that the model is selected. However, it is difficult for users to select the object model they want to select when the models are relatively small, clustered together or overlap with each other, especially when the model is blocked or there are a lot of other models around. At this time, There may be multiple misclicks, or other models must be moved or rotated to select, or even the target model cannot be selected at all. At the same time, using the traditional method, one ray can only select one detected model at a t...

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Abstract

The invention provides a 3D model selection method and device. According to the 3D model selection method and device, a traditional collision detection ray detection mode is abandoned, a collision detection surface is used to move forwards in the direction of a collision detection ray to form a collision detection body, detection will not stop after the collision detection surface collides with a model, instead the collision detection surface continues to move in the ray direction till penetrating into all models which the collision detection surface collides with in the ray direction, and all the models obtained through collision detection are returned for a user to select. Through the 3D model selection method and device, the problem that when multiple tiny models are gathered and concealed, accurate selection cannot be realized is solved; especially the user has higher probability to include the tiny or concealed models into a detection range when using 3D human body teaching software, and therefore precision and usability during 3D model selection are improved.

Description

technical field [0001] The present invention relates to a method and device for accurately selecting a designated model among multiple 3D models, in particular to a method and device for accurately selecting a single or multiple designated models in complex and small 3D model combinations. Background technique [0002] For software with 3D model operation functions, it usually has the function of selecting models or positioning model parts. Especially in medical teaching software, it is necessary to accurately locate and select the human body structure for teaching. In the prior art, this function is realized by using a mouse or a finger to click on a model, and the clicked model becomes selected. see figure 1 , starting from clicking the mouse or touching the touch screen with the operating body (usually a finger), and launching a "collision detection ray" from the click to the model. When the ray hits the model, it returns to the program the first collision name of a mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/0484G06F3/0488G06T17/00G06T19/20
CPCG06F3/04842G06F3/0488G06F2203/04802G06T17/00G06T19/20G06T2219/2016
Inventor 林自成何俊学刘筱晗赵默涵王瑶刘磊郭慧莹
Owner CHENGDU CTC TIANFU DIGITAL TECH
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