I really beg about help because I'm trying to do some things for a few days, and I really don't know how. I want to do road manipulate by hold and drag . I think I need to start with adding new point in polyline geometry exaclly in the pointer place (or linestring, linstring points and polyline geometry seems to be almost the same). But it seems to be impossible.
Of course, there is no problem with getting coordinates, but adding this new coordinates to polyline or linestring in appropriate place.
There is no code, because every here map methods (pushPoints, setGeopetry) seems to be usless, and give points in the wrong place.
See please this example: https://demo.support.here.com/examples/v3/fleet - you can drag-n-drop there
and src code of it : https://demo.support.here.com/javascripts/examples/v3/fleet.js
Search there in the code the variable clipedPolyline and func clipPolyline:
var clipPolyline = function(polyline, viewportX, viewportY, bboxSize){
var pleft = viewportX - bboxSize,
pright = viewportX + bboxSize,
ptop = viewportY - bboxSize,
pbottom = viewportY + bboxSize,
coordLeftTop = map.screenToGeo(pleft, ptop),
coordRigthBottom = map.screenToGeo(pright, pbottom),
rect = new H.geo.Rect(coordLeftTop.lat,coordLeftTop.lng,coordRigthBottom.lat,coordRigthBottom.lng),
clipedPolyline = polyline.clip(rect);
return clipedPolyline;
};
Read please documentation for method clip on:
https://developer.here.com/documentation/maps/3.1.31.0/api_reference/H.map.Polyline.html#clip
Related
I'm sorry I don't know what to call these kind of chart. I've already made a square grid map, rectangle located on every centroid. (pic 1)
Pic 1
Now I want to make like a percentage map (isotype?), but I don't know how to do it. (pic 2--photoshopped)
Pic 2
This is the code, I modified it from a simple map code
d3.json(url).then(function(dataset){
group = canvas.selectAll("g")
.data(dataset.features)
.enter()
.append("g")
areas = group.append("path")
.attr("d", path)
.attr("class","area")
.style("fill","white")
.style("opacity",0)
;
group.append("rect")
.attr("x",function (d) { return path.centroid(d)[0];})
.attr("y",function (d) { return path.centroid(d)[1];})
.attr("width",10)
.attr("height",10)
.style("fill","orange");
});
I already have an idea, by manually adding the data on the JSON, but I want to know how to do it from dynamic input. I want to google it but don't have any clue or keyword.
Thanks
I've been following a tutorial to create an AR Ruler. Therefore, with the code below, I'm able to place 3D sphere's in my scene (which im looking to keep for the tracking functionality). However, instead of a 3d image, I'm looking to place an image. I attempted changing the dotGeometry and setting it to a UIImage and commenting out the material code but wasn't sure how to deal with with dotNode piece of code. Therefore, how would I be able to set my image as the resulting on-screen addition?
let dotGeometry = SCNSphere(radius: 0.005)
let material = SCNMaterial()
material.diffuse.contents = UIColor.red
dotGeometry.materials = [material]
let dotNode = SCNNode(geometry: dotGeometry)
dotNode.position = SCNVector3(hitResult.worldTransform.columns.3.x, hitResult.worldTransform.columns.3.y, hitResult.worldTransform.columns.3.z)
sceneView.scene.rootNode.addChildNode(dotNode)
You could create a SCNBox and set its length to a very small value to make it appear flat.
let box = SCNBox(width: 0.2, height: 0.2, length: 0.005, chamferRadius: 0)
let material = SCNMaterial()
material.diffuse.contents = UIImage(named: "image.png")
box.materials = [material]
boxNode = SCNNode(geometry: box)
boxNode.opacity = 1.0
boxNode.position = SCNVector3(0,0,-0.5)
scene.rootNode.addChildNode(boxNode)
Or you could follow another approach and add an overlay SKScene (2D) to the SCNScene(3D) as described here : How can I overlay a SKScene over a SCNScene in Swift?
If we have NON-axis-aligned box, how can we best check if a point lies inside it? (I'm using three.js, so any utility from there can be of help. Three.js contains bounding box concept, but that is axis-aligned bounding box)
If your box is a THREE.BoxGeometry that is rotated, translated and scaled, then you can use its transformation matrix m to find if it intersects your point v:
transform v and the box by the inverse of m
check if transformed v is inside the transformed box (which is now axis aligned)
Here is the code:
var box = <Your non-aligned box>
var point = <Your point>
box.geometry.computeBoundingBox(); // This is only necessary if not allready computed
box.updateMatrixWorld(true); // This might be necessary if box is moved
var boxMatrixInverse = new THREE.Matrix4().getInverse(box.matrixWorld);
var inverseBox = box.clone();
var inversePoint = point.clone();
inverseBox.applyMatrix(boxMatrixInverse);
inversePoint.applyMatrix4(boxMatrixInverse);
var bb = new THREE.Box3().setFromObject(inverseBox);
var isInside = bb.containsPoint(inversePoint);
And here is a running demonstration: https://jsfiddle.net/holgerl/q0z979uy/
I have created a mobile map with Cloudmade Leaflet and have it so a number of markers are generated to coincide with LatLong values in a database. However, I can't figure out how to set the initial Map view to set the zoom and centre the map on the group of markers. I presume I need to use setBounds but for this I need to know what the NorthEast and SouthWest coordinates are.
Do I need to go through the whole array of marker coordinates to find the North-most, East-most, South-most and West-mode values or is there an easier way?
You can use the fitBounds() method.
Leaflets reference
Create a L.LatLngBounds object and loop through your markers calling L.LatLngBounds.extend() for each lat/lng.
I think the easiest way would be to do something like this:
int minLat = int.MaxValue;
int minLong = int.MaxValue;
int maxLat = int.MinValue;
int maxLong = int.MinValue;
foreach (var point in coordinates)
{
minLat = Math.Min(point.Latitude(), minLat);
minLong = Math.Min(point.Longitude(), minLong);
maxLat = Math.Max(point.Latitude(), maxLat);
maxLong = Math.Max(point.Longitude(), maxLong);
}
This has worked well for me in C#.
map.fitBounds(markers.getBounds());
should work...provided you have same names as the examples..
I've ran into a weird problem with getCharBoundaries, I could not figure out what coordinate space the coordinates returned from the function was in. What ever I tried I could not get it to match up with what I expected.
So I made a new project and and added simple code to highlight the last charater in a textfield, and all of a sudden it worked fine. I then tried to copy over the TextField that had been causing me problems, into the new project. And now the same weird offset appeared 50px on the x axis. Everything else was spot on.
So after some headscracthing comparing the two TextFields, I simply can not see a difference in their properties or transformation.
So I was hoping that someone might now what property might affect the coordinates returned by getCharBoundaries.
I am using Flash CS4.
I've just had exactly the same problem and thought I'd help out by offering what my findings are. With a help from this thread, I tried to find everything that wasn't 'default' about the textfield I was using. I found that when I had switched my TextFormatAlign (or 'align' in the IDE) and TextFieldAutoSize properties to 'LEFT' as opposed to 'CENTER', it solved the problem.
A little late in the game perhaps, but worth knowing for anyone running into the same problem. This was the only thread I could find that raised the right flag...
Well the getCharBoundaries returns the boundaries in the textfield coordinate system. Where the origin is topleft corner of the textfield.
getCharBoundaries does not take into consideration the scrolling. you need to check if there are scrollbars on its parent (textarea) and if so relocate. One quick way of doing it is using localtoglobal and globaltolocal. Use the first to translate from the textfield coordinate system to the application coordinate system and then use the second to translate from the app coordinate system to the coordinate system of the parent of the textfield which is the textarea. I'm fine tuning a my method to get char boundaries i will publish it today on my blog
http://flexbuzz.blogspot.com/
Works For Me(tm) (Flex Builder AS3 project):
[Embed(systemFont="Segoe UI", fontWeight="bold", fontName="emb",
mimeType="application/x-font")]
private var EmbeddedFont:Class;
public function ScratchAs3()
{
stage.scaleMode = 'noScale';
stage.align = 'tl';
var m:Matrix = new Matrix(.8, .1, -.1, 1.1, 26, 78);
var t:TextField = new TextField();
t.autoSize = 'left';
t.wordWrap = false;
t.embedFonts = true;
t.defaultTextFormat = new TextFormat("emb", 100, 0, true);
t.transform.matrix = m;
t.text = "TEST STRING.";
addChild(t);
var r:Rectangle = t.getCharBoundaries(8);
var tl:Point = m.transformPoint(r.topLeft);
var tr:Point = m.transformPoint(new Point(r.right, r.top));
var bl:Point = m.transformPoint(new Point(r.left, r.bottom));
var br:Point = m.transformPoint(r.bottomRight);
graphics.beginFill(0xFF, .6);
graphics.moveTo(tl.x, tl.y);
graphics.lineTo(tr.x, tr.y);
graphics.lineTo(br.x, br.y);
graphics.lineTo(bl.x, bl.y);
graphics.lineTo(tl.x, tl.y);
}
To literally answer your question, it returns the coordinates in the TextField's coordinate system, not it's parent, and it is affected by DisplayObject.transform.matrix, which is the backing for the .x, .y, .scaleX, .scaleY, .width, .height, and .rotation properties.
What ever it was the solution was simple to add a new TextField, never found out what property screwed everything up.
The first answer is correct in most cases. However if your field is parented to another movie clip it may still return the wrong y coordinate. try this code:
//if this doesn't work:
myTextFormat = new TextFormat();
myTextFormat.align = TextFormatAlign.LEFT;
myFieldsParent.myField.autoSize = TextFieldAutoSize.LEFT;
myFieldsParent.myField.setTextFormat( myTextFormat);
//try this:
var x = myFieldsParent.myField.getCharBoundaries(o).x;
var y = myFieldsParent.myField.getCharBoundaries(o).y;
var myPoint:Point = new Point(myField.getCharBoundaries(o).x,myField.getCharBoundaries(o).y);
var pt:Point = new Point(myFieldsParent.myField.getCharBoundaries(o).x, myFieldsParent.myField.getCharBoundaries(o).y);
pt = myFieldsParent.myField.localToGlobal(pt);
//pt is the variable containing the coordinates of the char in the stage's coordinate space. You may still need to offset it with a fixed value but it should be constant.
I didn't test this code as I have adapted this example from code that is embedded into my project so I apologize if I'm missing something...