Created
January 2, 2013 13:16
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Edge pan component for Isogenic Engine 1.1.0
Add it to viewport entity and use detectarea (pixels of edges), speed properties.
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| var EdgePan = IgeClass.extend({ | |
| classId: 'EdgePan', | |
| componentId: 'edgepan', | |
| init: function (entity, options) { | |
| var self = this; | |
| self._entity = entity; | |
| self._options = options; | |
| self.edgePanEntity = new IgeEntity() | |
| .id('edgePanEntity') | |
| .depth(1) | |
| .translateTo(0, 0, 0) | |
| .drawBounds(false) | |
| .drawBoundsData(false) | |
| .width(1) | |
| .height(1) | |
| .mount(ige); | |
| self.edgePanEntity.tick = function (ctx) { | |
| if (self.xStep !== 0 || self.yStep !== 0) { | |
| self.edgePanEntity.translateBy(self.xStep, self.yStep, 0); | |
| } | |
| }; | |
| entity.camera.trackTranslate(self.edgePanEntity); | |
| self.xStep = 0; | |
| self.yStep = 0; | |
| self._detectArea = 30; | |
| self._speed = 7; | |
| ige.input.on('mouseMove', function (event, x, y, button) { | |
| var sp, a=ige._geometry.x2 - self._detectArea, b=ige._geometry.y2 - self._detectArea; | |
| if (Math.abs(x) > a) { | |
| sp = ((Math.abs(x) - a) / self._detectArea) * self._speed; | |
| self.xStep = x < 0 ? -sp : sp; | |
| } else { | |
| self.xStep = 0; | |
| } | |
| if (Math.abs(y) > b) { | |
| sp = ((Math.abs(y) - b) / self._detectArea) * self._speed; | |
| self.yStep = y < 0 ? -sp : sp; | |
| } else { | |
| self.yStep = 0; | |
| } | |
| }); | |
| }, | |
| detectArea: function(value){ | |
| if (value!==undefined) { | |
| this._detectArea = value; | |
| return this._entity; | |
| } else { | |
| return this._detectArea; | |
| } | |
| }, | |
| speed : function(value){ | |
| if (value!==undefined) { | |
| this._speed = value; | |
| return this._entity; | |
| } else { | |
| return this._speed; | |
| } | |
| } | |
| }); | |
| if (typeof(module) !== 'undefined' && typeof(module.exports) !== 'undefined') { | |
| module.exports = EdgePan; | |
| } |
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Copied from @volkans80 post on usage in another thread for anyone who is interested: