基于OpenGL的三维模型渲染新方法

摘要

在测量领域,为了实时显示、模拟被测目标的测量信息(如目标表面的温度、压力、振动等物理信息),就需要对目标进行三维建模,在建模的基础上根据实测信息,进行模型渲染,方便试验人员判读目标的测量状态信息.提出一种基于OpenGL的渲染方法,首先对三维模型的曲面作近似四边形划分,然后对相关物理量作插值运算,最后调用OpenGL的渲染接口完成模型渲染.方法真实反映了被测目标的测量信息,实现了模型渲染颜色的平滑过渡,为三维模型动态模拟显示提供了一种新方法.数值仿真结果验证了方法的可行性和有效性.%In the field of measurement, three-dimensional modeling is necessary for the display and simulation of target's measurement information in real time, such as surface temperature, pressure, vibration and other physical information. Model rendering according to the measurement information can help the tester judge the target's status.In this paper, a new rendering method based on OpenGL is proposed, which divides the 3D model's curved surface into approximate quadrilaterals, calculates the related physical quantities by interpolation operation, and implements the model rendering on the basis of OpenGL. This method reflects the real measurement information of the measured target, achieves the smooth transition of model rendering color, and provides a new way for 3D model dynamic simulation. The numerical simulation results verify the feasibility and effectiveness of the proposed method.