Reading method of material simplified luminance coefficient table for lighting design computing platform

Abstract

The invention discloses a reading method of a material simplification brightness coefficient table for an illumination design computing platform. The method comprises the following steps that a simplification brightness coefficient file *.RT file is opened, and a file pointer is read as the data path of the next-step operation; the first line of the *.RT file is read, and file version attribute information, the material reflection coefficient Q0 and the material category are obtained; the abscissa beta superscript is read and assigned, and ordinate tggamma superscript is read and assigned; a dividing end mark is read, on the next line of the dividing end mark, the simplification brightness coefficient data is read line by line, and a simplification brightness coefficient matrix is assembled in a memory; filename pointer and variable space which are used up are closed. The simplification brightness coefficient file *.RT file can be read, and reading and computing requirements of different versions can be sufficiently met. When non-integer abscissa and ordinate are processed, a determinant mapping method is adopted, and data table storage and computing after future data sampling pass point can be achieved in a compatible mode.

Description

technical field [0001] The invention belongs to the technical field of an online lighting design computing platform, and in particular relates to a method for reading a simplified brightness coefficient table of a material used in a lighting design computing platform. Background technique [0002] In computer graphics calculations, it is necessary to use numerical methods to describe the reflection properties of different materials to ambient light, so that when implementing object lighting simulation calculations, the ability to reflect light closest to real physical conditions can be obtained with the minimum calculation cost The fitting calculation results. To reflect the ability of an object to reflect light, it is generally described by a simplified luminance coefficient. When subjected to the same intensity of light, an object with a larger simplified luminance coefficient will have a higher brightness. In the calculation of outdoor public lighting, especially in the ...

AI Technical Summary

Problems solved by technology

The existing solution not only limits the application of new data formats, but also greatly limits the expansion performance of the program by solidifying related modules, and cannot adapt to the requirements of new applications in a timely manner.

[0007] 2. No code-level openness

This greatly restricts users from carrying out personalized custom development work according to actual needs

[0008] 3. Does not support building a personalized material reflection tool set

Because the existing solutions cannot provide data or code interfaces, they do not allow third-party solutions to connect and collaborate, and cannot build a mature auxiliary tool group similar to 3DS MAX and other rendering platforms to further enrich various user needs in the lighting design market.

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