2014/10/16 上午 12:03:05

jquery Programming Glossary: dx

How to drag images / objects within Canvas?

http://stackoverflow.com/questions/18333936/how-to-drag-images-objects-within-canvas

how much the mouse has moved since we were last here var dx mouseX lastX var dy mouseY lastY set the lastXY for next time.. var i 0 i dragging.length i img images dragging i img.x dx img.y dy else we're panning the tiger set the panXY by how much.. tiger set the panXY by how much the mouse has moved panX dx panY dy draw And here is code to determine which color images..

Get relative position between 2 DOM elements using JavaScript

http://stackoverflow.com/questions/225563/get-relative-position-between-2-dom-elements-using-javascript

var o1 element1 .offset var o2 element2 .offset var dx o1.left o2.left var dy o1.top o2.top var distance Math.sqrt..

Find html element nearest to position (relative or absolute)

http://stackoverflow.com/questions/2337630/find-html-element-nearest-to-position-relative-or-absolute

var el null elOffset x offset.left y offset.top distance dx dy minDistance this.each function elOffset this .offset if x.. elOffset.right elOffset.bottom for off in offsets dx offsets off 0 x dy offsets off 1 y distance Math.sqrt dx dx.. dx offsets off 0 x dy offsets off 1 y distance Math.sqrt dx dx dy dy if minDistance undefined distance minDistance minDistance..

jQuery .position() strangeness while using CSS3 rotate attribute

http://stackoverflow.com/questions/5078897/jquery-position-strangeness-while-using-css3-rotate-attribute

var p this .position return left p.left this.data 'dx' top p.top this.data 'dy' function var img 'img' pos Calculate.. this .addClass 'rot' .position rotated position this .data dx pr.left po.left delta X dy pr.top po.top delta Y Read the position..

set Interval and Clear Interval

http://stackoverflow.com/questions/5978519/set-interval-and-clear-interval

x 4 setInterval drawAll 20 else setInterval drawAll 20 x dx break Hi all I want to call drawAll once not creating a loop..

HTML5 Panning based on Mouse Movement

http://stackoverflow.com/questions/7096921/html5-panning-based-on-mouse-movement

matrix by setting the amount of movement 1 0 dx 0 1 dy 0 0 1 ctx.setTransform 1 0 0 1 x startCoords 0 y startCoords..

How to drag images / objects within Canvas?

http://stackoverflow.com/questions/18333936/how-to-drag-images-objects-within-canvas

e.clientX offsetX mouseY parseInt e.clientY offsetY calc how much the mouse has moved since we were last here var dx mouseX lastX var dy mouseY lastY set the lastXY for next time we're here lastX mouseX lastY mouseY handle drags pans if.. move all affected images by how much the mouse has moved for var i 0 i dragging.length i img images dragging i img.x dx img.y dy else we're panning the tiger set the panXY by how much the mouse has moved panX dx panY dy draw And here is code.. images dragging i img.x dx img.y dy else we're panning the tiger set the panXY by how much the mouse has moved panX dx panY dy draw And here is code to determine which color images are under the mouse and will be dragged. Any color image under..

Get relative position between 2 DOM elements using JavaScript

http://stackoverflow.com/questions/225563/get-relative-position-between-2-dom-elements-using-javascript

Find html element nearest to position (relative or absolute)

http://stackoverflow.com/questions/2337630/find-html-element-nearest-to-position-relative-or-absolute

offset within the collection closestToOffset function offset var el null elOffset x offset.left y offset.top distance dx dy minDistance this.each function elOffset this .offset if x elOffset.left x elOffset.right y elOffset.top y elOffset.bottom.. elOffset.right elOffset.top elOffset.left elOffset.bottom elOffset.right elOffset.bottom for off in offsets dx offsets off 0 x dy offsets off 1 y distance Math.sqrt dx dx dy dy if minDistance undefined distance minDistance minDistance.. elOffset.right elOffset.bottom for off in offsets dx offsets off 0 x dy offsets off 1 y distance Math.sqrt dx dx dy dy if minDistance undefined distance minDistance minDistance distance el this return el Few notes If the offset..

jQuery .position() strangeness while using CSS3 rotate attribute

http://stackoverflow.com/questions/5078897/jquery-position-strangeness-while-using-css3-rotate-attribute

Needed to read the real position .fn.adjustedPosition function var p this .position return left p.left this.data 'dx' top p.top this.data 'dy' function var img 'img' pos Calculate the delta img.each function var po this .position original.. function var po this .position original position pr this .addClass 'rot' .position rotated position this .data dx pr.left po.left delta X dy pr.top po.top delta Y Read the position pos img.adjustedPosition alert pos.left ' ' pos.top..

set Interval and Clear Interval

http://stackoverflow.com/questions/5978519/set-interval-and-clear-interval

event switch event.keyCode case 32 Space bar was pressed if x 4 setInterval drawAll 20 else setInterval drawAll 20 x dx break Hi all I want to call drawAll once not creating a loop that call drawAll again and again should I use recursive..

HTML5 Panning based on Mouse Movement

http://stackoverflow.com/questions/7096921/html5-panning-based-on-mouse-movement

pressed var x e.offsetX var y e.offsetY set the canvas' transformation matrix by setting the amount of movement 1 0 dx 0 1 dy 0 0 1 ctx.setTransform 1 0 0 1 x startCoords 0 y startCoords 1 render render to show changes share improve this..