The variable pos is the position of the point in 3D space, "under the mouse", and in the plane z=0.ĮDIT: If you need the point "under the mouse" and in the plane z = targetZ, replace the distance computation with: var distance = ( targetZ - ) / vec. JavaScript Code is given below, clientX and clientY property returns the horizontal and vertical coordinates of the mouse cursor which are then displayed inside. Pos.copy( camera.position ).add( vec.multiplyScalar( distance ) ) The JavaScript script presented in this page can be used to Get Mouse coordinates inside a HTML element, usually a Div or an Image. ( event.clientY / window.innerHeight ) * 2 + 1,
( event.clientX / window.innerWidth ) * 2 - 1, Var pos = new THREE.Vector3() // create once and reuse You can do that like so: var vec = new THREE.Vector3() // create once and reuse To get the mouse click coordinates for image with JavaScript, we can add a click event listener to the img element. So as a public service, I offer this page which has JavaScript examples for finding the coordinates of the mouse for different reference points. Then we set img.onclick to a function that gets the x and y coordinates of the mouse click in the page with e.pageX - e.target.offsetLeft and e.pageY - e.target.offsetTop. Being based on the edge of the document as it is, this property takes into. Dealing with mouse position in JavaScript is annoying. This includes any portion of the document not currently visible. You just need to extend that ray, from the camera position, until the z-coordinate of the tip of the ray is zero. The pageX read-only property of the MouseEvent interface returns the X (horizontal) coordinate (in pixels) at which the mouse was clicked, relative to the left edge of the entire document. Using vector.unproject( camera ) you can get a ray pointing in the direction you want.
Subtract offsetLeft from clientX and offsetTop from clientY.You do not need to have any objects in your scene to do this. This example uses the mousemove event to get two values from the MapMouseEvent object: the x-y point coordinates of the mouse cursor on the HTML map. To get the mouse coordinates relative to an element on the page, we had to The system variable mouseX always contains the current horizontal position of the mouse, relative to (0, 0) of the canvas.
The coordinates x and y are interpreted in pixels relative to a position (0, 0) of the selected. The mousemove event is triggered at an element when the user's mouse is moved This function moves the mouse cursor to the position ( x, y ). So, the task is to find the coordinates of the mouse over the screen. This means that vertical zero is topmost point and horizontal zero is the leftmost point. Copied! import Įvent on a div element or on the window object. The top left corner of the screen is (0, 0) i,e, X and Y coordinate is (0, 0).
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