57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
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#pragma once
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#include <QtCore/QRectF>
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#include <QtCore/QString>
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#include <crs.h>
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#include <pointxy.h>
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namespace LAMPMainWidget
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{
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/**
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* Web莫卡托投影，一般用于web地图投影坐标系。
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* google地图，openstreetmap等，将原点移至了左上角。
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*/
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class WebMercator : public CRS
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{
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public:
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/**
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* 返回该坐标系在proj4中的转换公式
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* @return 转换公式的字符串
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*/
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QString proj4Cvt() const override;
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/**
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* 返回该坐标系的wkt定义
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* @return 坐标系的wkt定义字符串
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*/
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QString wktDef() const override;
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/**
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* 返回该坐标系的proj4定义
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* @return proj4的定义字符串
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*/
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QString proj4Def() const override;
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/**
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* 返回该坐标系的整个投影大小
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* @return 投影的整个大小
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*/
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QRectF extent() const override;
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/**
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* 将wgs84的经纬度坐标装换为该坐标系坐标
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* @param point 点坐标
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* @return wgs84坐标
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*/
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PointXY forward(const PointXY& point) const override;
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/**
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* 将该坐标系坐标转换为wgs84的经纬度坐标
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* @param point 点坐标
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* @return wgs84坐标
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*/
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PointXY inverse(const PointXY& point) const override;
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};
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}
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