in the first image, the world map is a result with TopoJSON/GeoJSON. Turkey zoomed in. Second image is Turkey map. As you can see, there are differences in the borders. When I add the map of Turkey on the world map, distortions appear as in the third image. How can I combine the world map and Turkey cities?
I added the SVG on top of the SVG.
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Basically, my setup is similar to https://echarts.apache.org/examples/en/editor.html?c=map-usa.
We need to draw dashed line of custom color on one of the borders.
For example, Texas - New Mexico border.
Tried editing the GeoJson file, and add some line objects, but the problem is that those objects are drawn with same color as state borders.
I have 2D color image. All colored points are located inside round area in center of this rectangle image, all points outside circle are black (I get these rectangle images from fisheye camera).
I know the coordinates of center of this circle and its radius.
I need to move all colored points from circle area on 2D image to the surface of sphere. More precisely hemisphere, because my camera has 180 degrees FOV.
My question is. How to move these colored points correctly? Will it be correct to just assign Z coordinate to all points inside circle area in accordance with sphere equation?
To make my question more clear I attached 2D image from my fisheye camera and image with desirable result.
First, you need the lens calibration data of your camera. Ocam or opencv will do a great job for you.
Second, as you mentioned that you already know your optical center, you can convert image coordinate into the sphere coordinate. So, now you have mapping function that maps image coordinate to sphere coordinate.
Third, you need some sort of rendering tool to observe your image mapped sphere. The simplest way is to use OpenGL. Map your texture on a sphere and move the camera inside the sphere.
Can someone explain to me what is the math behind this pie menu? I don't understand how it's rendered at all. Helps are appreciated
Most of graphics libraries have function like Pie for drawing of circular sector. To draw ring sector, like your bottom picture, one could draw all needed circular sectors with large radius, then circle or circular sector with lesser radius to fill center region.
I have a script that gets the coordinate of a map by clicking. At the same time, there are circle overlays spread across the map. I can get the coordinate of anywhere but the area covered by the overlays. What is a good work-around for this problem?
Either make the circles with {clickable: false} or capture the click event on the circles also
In google maps api v3, is there a way to scale a polyline's stroke weight relative to the map's zoom level (similar to how a polygon acts on zoom)?
problem example: if I have the map at full zoom and draw a polyline on a road with the polyline's stroke weight set-up to match the width of the road, when I zoom the map out to display the city, the polyline's width (the road) appears to be roughly a mile wide. Is there a way to keep the polyline the same size as the road would be when the map is zoomed?
I do not believe that there is a built in method of scaling the strokeWeight so you may need to build your own. One method of doing this, just off the top of my head is to add an event listener to the map for the zoom_changed event and adjust the strokeWeight there.