polyline

问题 I want to draw a curved polyline between two points on a map with the Mapbox SDK. I could not find any solution from the Mapbox SDK. The Turf library is not ready yet to use it on Android. 回答1: I found a solution with the google maps sdk so I converted it to use only the Mapbox sdk : Inspired by Can I draw a curved dashed line in Google Maps Android? public static List<LatLng> computeCurvedPolyline(LatLng from, LatLng to, double k) { //Calculate distance and heading between two points double

问题 I want to draw a curved polyline between two points on a map with the Mapbox SDK. I could not find any solution from the Mapbox SDK. The Turf library is not ready yet to use it on Android. 回答1: I found a solution with the google maps sdk so I converted it to use only the Mapbox sdk : Inspired by Can I draw a curved dashed line in Google Maps Android? public static List<LatLng> computeCurvedPolyline(LatLng from, LatLng to, double k) { //Calculate distance and heading between two points double

问题 I am trying to add multiple poly lines onto a map using mkmapkit. These poly lines indicate walking zones in my area. The problem is that my code is too bulky for a large amount of walking zones. At the moment my code only indicates 2 walking routes but for instance if I want to add 100 or 1000 walking routes the code would be massive. I'm sure there is a way I could stream line this code so I could add in multiple walking zones with a lot less code but in not too sure the best way to go

问题 I want to place multiple polylines on Google maps in react-native. I'm using the react-native-maps and @mapbox/polyline for creating polylines which I imported at the top: import MapView from 'react-native-maps'; import Polyline from '@mapbox/polyline'; Here is the rest of the code: import { Marker } from 'react-native-maps'; import React, { Component } from 'react'; import { Platform, StyleSheet, Text, View, Button } from 'react-native'; export default class consults extends Component {

问题 I am creating autocad plugin which get points from existing geometry, pass it to another windows and create object with same geometry on canvas as polyline. Autocad object is polyline so some points (vertices) must be overdrawn. I gather points from autocad, length of vertices and transform that to center object in real coordinates on canvas. Then when I draw it, i get this: The points that i collect are correct, they are transformed simetrically. And the code for drawing on canvas is here:

问题 I am creating autocad plugin which get points from existing geometry, pass it to another windows and create object with same geometry on canvas as polyline. Autocad object is polyline so some points (vertices) must be overdrawn. I gather points from autocad, length of vertices and transform that to center object in real coordinates on canvas. Then when I draw it, i get this: The points that i collect are correct, they are transformed simetrically. And the code for drawing on canvas is here:

问题 well, im a begginer in android and i need to use maps on the device more specifically (polylines) i need to do something like this. this is a web app i did to track down bus routes and bus-stops on my city , and i've been asked to do the same thing in android! ive been checking the maps api for android and did not found anything similar to polyline in JS api , is there a way to achieve this? i have no problem adding simple overlays i've been checking the basic tutorials in android developer

问题 I am using Google Map API to get lines on the map in my application. I am loading the nodes of the lines from a database using following code: // Add polyline "walks voda" List<WalkLine> dbwalknodes = dbclass.queryWalksFromDatabase(this); // list of latlng for (int i = 0; i < dbwalknodes.size() - 1 ; i++) { WalkLine source = dbwalknodes.get(i); WalkLine destination = dbwalknodes.get(i+1); Polyline line = mMap.addPolyline(new PolylineOptions() .add(new LatLng(source.getLat(), source.getLon()),

问题 I am using Google Map API to get lines on the map in my application. I am loading the nodes of the lines from a database using following code: // Add polyline "walks voda" List<WalkLine> dbwalknodes = dbclass.queryWalksFromDatabase(this); // list of latlng for (int i = 0; i < dbwalknodes.size() - 1 ; i++) { WalkLine source = dbwalknodes.get(i); WalkLine destination = dbwalknodes.get(i+1); Polyline line = mMap.addPolyline(new PolylineOptions() .add(new LatLng(source.getLat(), source.getLon()),

问题 the python code given below draws a triangle, how can I fill inside? Or other easier way to draw a triangle in OpenCV? pts = np.array([[100,350],[165,350],[165,240]], np.int32) cv2.polylines(img,[pts],True,(0,255,255),2) 回答1: You have to use cv2.fillPoly() . Change the second line to: cv2.fillPoly(img, [pts], 255) Illustration: img = np.zeros([400, 400],dtype=np.uint8) pts = np.array([[100,350],[165,350],[165,240]], np.int32) cv2.fillPoly(img, [pts], 255) cv2.imshow('Original', img) Result: