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2014/10/16 ¤W¤È 12:04:38
jquery Programming Glossary: lastxHow to drag images / objects within Canvas? http://stackoverflow.com/questions/18333936/how-to-drag-images-objects-within-canvas needed in mousemove to determine how far we have dragged lastX mouseX lastY mouseY test if we're over any of the images if.. 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.. 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..
How to drag images / objects within Canvas? http://stackoverflow.com/questions/18333936/how-to-drag-images-objects-within-canvas e.clientY offsetY set the starting drag position this is needed in mousemove to determine how far we have dragged lastX mouseX lastY mouseY test if we're over any of the images if yes put those image s in an array called dragging dragging imagesHitTests.. 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 dragging.length.. 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 dragging.length 0 we're dragging images move all..
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