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. var canvas = document.getElementById("m圜anvas") Ĭanvas. The top left corner of the screen is (0, 0) i,e, X and Y coordinate is (0, 0). The e.clientX and e.clientY will get the mouse positions relative to the top of the document, to change this to be based on the top of the canvas we subtract the left and right positions of the canvas from the client X and Y. If your game involved you clicking on a target or object, canvas needs to know where your mouse is and if it is in the same position as the object you are. If( example will show how to get the mouse position relative to the canvas, such that (0,0) will be the top-left hand corner of the HTML5 Canvas. Get X, Y coords, and displays Mouse coordinates returns an object with "xp" (Left), "=yp" (Top) position Y = parseInt(y) + parseInt(elm.offsetTop) X = parseInt(x) + parseInt(elm.offsetLeft) At this point, the solution for transforming the mouse cursor into canvas space is simple, subtract the translation amount from the mouse cursor position. ![]() evt is an event object equivalent to window.event evt.clientX and evt.clientY giv. offsetTop to y and set elm to its offsetParent Report the mouse position on a canvas when the mouse is clicked. How To Get Mouse Coordinates In JS Flash: Tracking mouse position after Mouse Position Prediction Library Translate mouse coordinates to a 3D Get Mouse. if not then add current elm’s offsetLeft to x Y = elm.offsetTop // set y to elm’s offsetTopĮlm = elm.offsetParent // set elm to its offsetParent X = elm.offsetLeft // set x to elm’s offsetLeft Get X and Y position of the elm (from: ) Question: How do I determine the x, y values when the mouse is clicked on the
0 Comments
Leave a Reply. |