I’d like to use a Shapefile to generate an interactive world map. I was able to import the data and use CG Paths to draw the map into one large view.
The map needs to support panning, zooming and touch interaction. For that, I've created a UIScrollView and placed the MapView (large view with all of the countries drawn) into it.
I have drawn the map much larger than the screen size, in order to make it look reasonable when I zoom in. There are a few problems with this. First, when I'm zoomed out, I need the border stroke/line to be wider so they are visible. When I zoom in, I'd like the stroke to be a thinner. Also, when I zoom in, I can still see that the map is a blurry. I don't want to increase the view size too much.
How can I make the map look crisp when I'm zoomed in? I attempted to redraw the map on zoom in, but it takes far too long. Can I somehow only re render onscreen stuff?
Touch Interaction - I need to be able to have a touch event for every different country.
I was thinking of trying to separate every country onto it’s own view. That should make touches easy to handle. Then I’m thinking I can possibly redraw the appropriate views that are on screen/zoomed to.
I've played with an app that does something similar ("World Maps"), and I can see that when you pan or zoom, the map is blurry for a second but then becomes clear. What is going on there?
If anyone could lend some advice, or point me in the right direct, it would be greatly appreciated!
The map needs to support panning, zooming and touch interaction. For that, I've created a UIScrollView and placed the MapView (large view with all of the countries drawn) into it.
I have drawn the map much larger than the screen size, in order to make it look reasonable when I zoom in. There are a few problems with this. First, when I'm zoomed out, I need the border stroke/line to be wider so they are visible. When I zoom in, I'd like the stroke to be a thinner. Also, when I zoom in, I can still see that the map is a blurry. I don't want to increase the view size too much.
How can I make the map look crisp when I'm zoomed in? I attempted to redraw the map on zoom in, but it takes far too long. Can I somehow only re render onscreen stuff?
Touch Interaction - I need to be able to have a touch event for every different country.
I was thinking of trying to separate every country onto it’s own view. That should make touches easy to handle. Then I’m thinking I can possibly redraw the appropriate views that are on screen/zoomed to.
I've played with an app that does something similar ("World Maps"), and I can see that when you pan or zoom, the map is blurry for a second but then becomes clear. What is going on there?
If anyone could lend some advice, or point me in the right direct, it would be greatly appreciated!