Draw a beautiful outline of the middle school playground and generate longitude and latitude data

The following figure shows a middle school building 、 playground 、 Green space polygon data , These data are based on geobuilding Draw the , Here is the drawing method of the playground .

The playground can be understood as 2 A semicircle plus a rectangle merge , We use the reference line tool to draw , adopt 【 Turn left 】、【 Turn right 】 Adjust the map rotation , Make sure that the horizontal line of the playground coincides with the horizontal scale . Drag the reference ball ( green ) To the right rectangular position . Drag to the appropriate position ,【 Lock the reference line 】. Here's the picture

Now start to draw the circle on the left , step

Drag the reference ball 410*410, Square box ,1 Click on 【 Drawing graphics 】 Button ,2、 Then select the rectangle just drawn , Enter positive 40 edge , Click on 【 Inside the frame 】 Button

Select this circle , Click the reference line tool 【 Copy symmetrically left and right 】 Generate the right circle

Next we need a rectangle in the middle , Also make sure that the four vertices of the rectangle are exactly on the upper and lower points of the circle . Drag the crosshairs to the left 205px; The right reference ball to the upper and lower points of the circle . After dragging , Click on 【 Create graphics 】 Get the rectangle

Press shift key , At the same time choose 2 A circle and a rectangle in the middle , Click on 【 Face merging 】 Button

Hide guides after merging , Here's the picture , We got a beautiful outline of the playground .

Map information in this tutorial , open geobuilding, Paste the map information on the right to this location . {"zoom":17.06123136912676,"center":[116.14629597404104,39.72563348924925],"pitch":0} Mapped runway geojson data {"id":"b34dcb8a432a1a216310cf80d2ccc14a","type":"Feature","properties":{"floor":1,"name":"","id":"b34dcb8a432a1a216310cf80d2ccc14a"},"geometry":{"coordinates":[[[116.14557110400716,39.72538878432343],[116.14557129756217,39.725388783946336],[116.1455771175672,39.725330004406715],[116.14559539120063,39.72527080266312],[116.14562548117965,39.72521452836315],[116.14566664659083,39.72516256717577],[116.1457178738039,39.72511619856854],[116.14577790143557,39.72507656430338],[116.14584525140629,39.72504464031917],[116.14591826533592,39.72502121270233],[116.14599514537991,39.725006858326196],[116.1460739984962,39.72500193064994],[116.146152883058,39.725006551011006],[116.1462298566683,39.72502060563855],[116.14630302397796,39.725043748456045],[116.14637058336751,39.725075409601374],[116.1464308713002,39.72511480946042],[116.14648240328614,39.72516097786615],[116.14652391043694,39.72521277798688],[116.14655437071013,39.72526893432095],[116.14657303407103,39.72532806410271],[116.1465792411826,39.72538682021288],[116.14657943473634,39.72538681983579],[116.1465820014106,39.72616612222848],[116.14658180785683,39.72616612260556],[116.14658200764103,39.72616801372865],[116.14657600031313,39.72622868443011],[116.14655772668124,39.726287885350644],[116.14652763670068,39.726344158774566],[116.14648647129104,39.72639611907155],[116.14643524407637,39.72644248681803],[116.14637521644465,39.72648212029736],[116.14630786647405,39.72651404361605],[116.1462348525443,39.72653747072627],[116.1461579725003,39.7265518247838],[116.14607911938566,39.72655675234927],[116.14600023482228,39.72655213209211],[116.14592326121198,39.7265380777761],[116.14585009390225,39.726514935460756],[116.1457825345127,39.72648327497646],[116.14572224658167,39.726443875899406],[116.14567071459578,39.72639770835198],[116.14562920744333,39.726345909121505],[116.14559874717179,39.72628975366521],[116.14558008380925,39.72623062470754],[116.14557367691185,39.72616997819466],[116.14557386423661,39.7261680863168],[116.14557367067982,39.72616808669389],[116.14557110400716,39.72538878432343]]],"type":"Polygon"}}

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