/* -----------------------------presentation.js documentation-------------------------------*/ presentations = new Array(); curPresNum = 0; function createPresentation(name,top,left,restartDelay,numLoops){ presString = name+" = new presentation("; presString += "name,curPresNum,top,left,restartDelay,numLoops);"; eval(presString); presentations[curPresNum] = eval(name); curPresNum++; } function presentation(name,number,left,top,restartDelay,numLoops){ this.isNS4 = (document.layers) ? 1 : 0; this.name = name; this.number = number; this.left = left; this.top = top; this.items = new Array(); this.isPaused = false; this.restartDelay = restartDelay; this.numLoops = numLoops; this.curLoop = 0; this.curItemNum = 0; this.createItem = createItem; this.startPresent = startPresent; this.pausePresent = pausePresent; this.restartPresent = restartPresent; this.resetPresent = resetPresent; this.readyToRestart = false; } function createItem(name,pathType,startX,startY,endX,endY,speed,whenShow,whenHide){ this.items[this.curItemNum] = new presItem(this,this.curItemNum,name,startX,startY,endX,endY,speed,whenShow,whenHide); this.items[this.curItemNum].buildPath(pathType,startX,startY,endX,endY); this.curItemNum++; } function presItem(parent,number,name,startX,startY,endX,endY,speed,whenShow,whenHide){ this.parent = parent; this.number = number; this.name = name; this.layer = (parent.isNS4) ? document.layers[name] : document.all[name]; this.sty = (parent.isNS4) ? this.layer : this.layer.style; this.startX=startX; this.startY=startY; this.endX=endX; this.endY=endY; this.speed=speed; this.setRunTimer=setRunTimer; this.setStopTimer=setStopTimer; this.whenShow=whenShow; this.whenHide=whenHide; this.isDone = false; this.buildPath = buildPath; this.moveIt = moveIt; } function startPresent(){ this.curLoop++; for (itemCount=0;itemCount=startY) ? "yLoop <= (endY-startY)" : "yLoop >= (endY-startY)"; yIncrement = (endY>=startY) ? "yLoop++" : "yLoop--"; for(yLoop=0;eval(loopYEnd);eval(yIncrement)){ this.incs[Math.abs(yLoop)] = {xLoc : startX, yLoc : startY+yLoop}; } return; } if (slope <= 1) { loopXEnd = (endX>=startX) ? "xLoop <= (endX-startX)" : "xLoop >= (endX-startX)"; xIncrement = (endX>=startX) ? "xLoop++" : "xLoop--"; xLength = endX - startX; for (xLoop=0;eval(loopXEnd);eval(xIncrement)){ xVal = xLoop; straightYVal = Math.round(slope * xLoop); switch (baseType) { case "straight" : yVal = straightYVal; break; case "sine" : amplitude = param1; yVal = straightYVal + Math.round(amplitude*Math.sin(xVal)*slope); break; case "bounce": amplitude = param1; tYVal = Math.round(amplitude*Math.sin(xVal)*slope); yVal = straightYVal + Math.abs(tYVal); break; default: window.alert("Invalid path type in presentation "+this.parent.number+" item "+this.number+"."); break; } dispX = this.parent.left + startX + xVal; dispY = this.parent.top + startY + yVal; this.incs[Math.abs(xLoop)] = {xLoc : dispX, yLoc : dispY}; } } else { yLength = endY - startY; loopYEnd = (endY>=startY) ? "yLoop <= (endY-startY)" : "yLoop >= (endY-startY)"; yIncrement = (endY>=startY) ? "yLoop++" : "yLoop--"; for (yLoop=0;eval(loopYEnd);eval(yIncrement)){ yVal = yLoop; straightXVal = Math.round(yVal / slope); switch (baseType) { case "straight" : xVal = straightXVal; break; case "sine" : amplitude = param1; xVal = straightXVal+Math.round(amplitude*Math.sin(yVal)/slope); break; case "bounce": amplitude = param1; tXVal = Math.round(amplitude*Math.sin(yVal)*slope); xVal = straightXVal + Math.abs(tXVal); break; } dispX = this.parent.left + startX + xVal; dispY = this.parent.top + startY + yVal; this.incs[Math.abs(xLoop)] = {xLoc : dispX, yLoc : dispY}; } } } function moveIt(incNum){ if (this.parent.isPaused) { incNum += 1; clearTimeout(this.movingTimer); repeatString = "presentations["+this.parent.number+"].items["+this.number+"].moveIt("+incNum+");"; this.movingTimer =setTimeout(repeatString,100); return; } if (incNum * this.speed > this.incs.length-1) { this.isDone = true; this.parent.restartPresent(); return; } this.sty.top = this.incs[incNum*this.speed].yLoc; this.sty.left = this.incs[incNum*this.speed].xLoc; incNum++; repeatString = "presentations["+this.parent.number+"].items["+this.number+"].moveIt("+incNum+");"; clearTimeout(this.movingTimer); this.movingTimer =setTimeout(repeatString,1); } function pausePresent(runSwitch){ vis = (this.isNS4) ? "show" : "visible"; invis = (this.isNS4) ? "hide" : "hidden"; this.isPaused = runSwitch; for (setVis=0;setVis this.numLoops) && (this.numLoops != -1)) this.readyToRestart = false; if (this.readyToRestart) { restartString = "presentations["+this.number+"].resetPresent();"; restartString += "presentations["+this.number+"].startPresent();"; clearTimeout(this.restartTimer); this.restartTimer = setTimeout(restartString,this.restartDelay); } }