VTS Browser Utility API
David Levinsky edited this page May 9, 2019
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2 revisions
Usage of the Proj4.js library is documented at this page.
| Method | Returns | Description |
|---|---|---|
| isEqual(<Number> a, <Number> b, delta) | Bool | Compares two number with delta tolerance. |
| clamp(<Number> a, <Number> min, <Number> max) | Number | Clamps provided number into the min, max range |
| radians(<Number> a) | Number | Converts degrees to the radians |
| degrees(<Number> a) | Number | Converts radians to the degrees |
Usage of these interfaces is very similar to glMatrix whic is documented at this page.
- mat4 is a 4x4 row major matrix (array of 16 numbers)
- mat3 is a 3x3 row major matrix (array of 9 numbers)
- vec3 is an array of 3 numbers [x,y,z]
- vec4 is an array of 3 numbers [x,y,z,w]
| Method | Returns | Description |
|---|---|---|
| preventDefault(<Event> e) | Null | More about function |
| stopPropagation(<Event> e) | Null | More about function |
| Method | Returns | Description |
|---|---|---|
| loadImage(<String> URL, <Function> onLoaded, <Function> onError) | Image | Creates a DOM image object from the provided URL which points to the image resource. Once the image is loaded the onLoaded function is called. If some error occurs the onError function is called. |
| loadJSON(<String> URL, <Function> onLoaded, <Function> onError) | null | Loads a JSON from the provided URL. Once the JSON is loaded the onLoaded(data) function is called. The first argument of this function is a data object with the file content. If an error occurs the onError function is called. |
| loadBinary(<String> URL, <Function> onLoaded, <Function> onError) | null | Loads a binary file from the provided URL. Once the file is loaded the onLoaded(data) function is called. The first argument of this function is an array buffer object with the file content. If an error occurs the onError function is called. |