A map color matching method and shader

Abstract

The embodiment of the present invention discloses a map color matching method and a shader. The method in the embodiment of the present invention includes: the shader receives an operation instruction input by the user, and the shader generates a plurality of corresponding texture map objects according to the pre-stored map slice data , for each texture map object, the shader obtains the color value of the texture map object, and the shader judges whether the texture map object is located in the color matching area of ​​the map, and if so, the shader takes the texture map object The color value of is set equal to the color value of the map color region. The embodiment of the present invention achieves the purpose of map color matching, and the user only needs to modify the color value of the corresponding map color matching area to change the color of the map element displayed in the map color matching area, without the need for the user to draw other graphics, which effectively improves the efficiency.

Description

technical field [0001] The invention relates to the technical field of image display, in particular to a map color matching method and a shader. Background technique [0002] Map color matching refers to the use of a specific color for a certain type of elements in the process of map making. For example, blue is generally used for rivers, green for parks, yellow for roads, and so on. Generally, there is a standard that stipulates how to match colors. After the color matching is completed, the map tile data is often saved as a kind of raster data in the hard disk to become a map cache. When it needs to be displayed, the application obtains the corresponding area map for display. It can be seen that after the map is made, the original data is generally not modified, and it takes a lot of energy and time to modify the data. [0003] In the application, it is sometimes necessary to modify the color of a certain type of element for highlighting according to actual needs. For...

AI Technical Summary

Problems solved by technology

However, this method needs to record the coordinates of the area in advance and form the coordinates into a polygon; in addition, after the preprocessing is completed, it is necessary to draw some more vector graphics when displaying

[0004] Because the user needs to record the coordinates of the area in advance and perform corresponding drawing, the user's operation is increased, and the efficiency is not high

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