A drawing method and device

Abstract

The invention provides a drawing method and device. The method comprises the steps that graph data is loaded; whether graph transformation properties are included in the graph data is judged, wherein the graph transformation properties are used for defining transformation operation performed on a graph; when the judgment result is yes, coordinates of graph sampling points in the graph data are transformed according to the graph transformation properties; when the judgment result is not or after the coordinates are transformed when the judgment result is yes, a bounding box is calculated according to the coordinates of the graph sampling points; metrics are calculated according to the width and height of the bounding box and canvas; the coordinates of the graph sampling points are transformed into canvas coordinates, displayed on the canvas, of the graph sampling points according to the metrics; and a graph corresponding to the graph data is drawn according to the canvas coordinates. Through the drawing method and device, the drawing process is simplified, and drawing efficiency is improved.

Description

technical field [0001] The present disclosure relates to computer technology, in particular to a drawing method and device. Background technique [0002] In diagramming, one of the types of diagrams can be called an illustration, and the illustration is a supplement to the main diagram, which is equivalent to a small diagram attached to the main diagram; the role of the illustration can include: forming a clear contrast with the main diagram, or avoiding contrast Illustrations can also provide readers with more comprehensive information, helping to understand and analyze the content of the main picture. Insets can often be displayed adjacent to the main figure. Take the drawing of map illustrations as an example. For example, a country’s map contains a wide range of territories. For example, the map of the United States includes the independent Alaska territory. The primary and secondary distinction is not obvious and the effect is poor, so the territory of Alaska can be r...

AI Technical Summary

Problems solved by technology

However, the illustration part needs to be drawn separately, and its data description format may not be consistent with the data format of the main map part. For example, instead of the GeoJSON format, SVG is used to draw the illustration and obtain the path points of the illustration; this will result in the need to modify the illustration when drawing the map It is more cumbersome to process differently from the main picture

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