function xyspeed() { this.m_xspeed=0; this.m_yspeed=0; } function calculateSpeed (xactual, yactual, xtarget, ytarget) { my_xyspeed=new xyspeed(); var Angle=Math.atan2(yactual-ytarget,xactual-xtarget); var Modul=Math.sqrt(Math.pow(yactual-ytarget,2)+Math.pow(xactual-xtarget,2)); my_xyspeed.m_xspeed=-(Modul*Math.cos(Angle))*.5; my_xyspeed.m_yspeed=-(Modul*Math.sin(Angle))*.5; return my_xyspeed; } function attraction() { this.m_xRightAttracts=-1; this.m_xLeftAttracts=-1; this.m_yTopAttracts=-1; this.m_yBottomAttracts=-1; this.m_xRightAttracted=-1; this.m_xLeftAttracted=-1; this.m_yTopAttracted=-1; this.m_yBottomAttracted=-1; } function oneletter(xletter,numletter) { this.m_Order=numletter; this.m_NameLetter=""; this.m_letter=xletter; this.m_xDim=0; this.m_yDim=0; this.m_xPos=0; this.m_yPos=0; this.m_xSpeed=0; this.m_ySpeed=0; this.m_FixedStartingLine=0; this.m_xtarget=0; this.m_ytarget=0; this.m_Row=0; this.m_DanceOrder=0; this.m_danceAttraction=new attraction(); this.m_targetAttraction=new attraction(); } function letters_list(stringresult, fontsize) { this.m_fontsize=fontsize; this.m_listSize=stringresult.length; this.m_TargetCharWidth=Math.floor((chalkboard_width-this.m_fontsize*5)/(this.m_fontsize/1.5)); this.m_TargetCharHeigth=Math.floor(chalkboard_height/this.m_fontsize); this.m_ExistsTarget=0; this.m_ltrLst= new Object(this.m_listSize); this.m_scrambled=1; this.AuxTabNumber=0; this.AuxCRNumber=0; for (x=0;x=this.m_TargetCharWidth)&&(this.m_ltrLst[x].m_letter==" ")) { this.AuxTabNumber=0; this.AuxCRNumber++; this.m_ltrLst[x].m_FixedStartingLine=1; this.m_ltrLst[x].m_Row=this.AuxCRNumber; this.m_ltrLst[x].m_xtarget=0; this.m_ltrLst[x].m_ytarget=this.m_ltrLst[x].m_Row*(this.m_fontsize+1); } else { this.AuxTabNumber++ this.m_ltrLst[x].m_Row=this.AuxCRNumber; this.m_ltrLst[x].m_targetAttraction.m_xLeftAttracted=x-1; } } } } //////////////MAIN INSTANCE OBJECT////////////////////////// True_LettersList=new letters_list(result,fontsizeresult); /////////////MAIN INSTANCE OBJECT/////////////////////////// /////////////////EXTERNAL INTERFACE///////////////// function target(yesno) { True_LettersList.m_ExistsTarget=yesno; } /////////////END EXTERNAL INTERFACE///////////////// ////////////////INTERNAL INTERFACE//////////////// function PaintOnChalkboard() { for(x=0;x'); document.write(True_LettersList.m_ltrLst[x].m_letter); document.write(''); // alert(True_LettersList.m_ltrLst[x].m_xPos); } } function getChalkboardOffset() { objecteChalkboard=document.getElementById("MathCatAnswer"); chalboardxOffset=objecteChalkboard.offsetLeft; chalboardyOffset=objecteChalkboard.offsetTop; //alert(chalboardxOffset+" "+chalboardyOffset); } function RepaintChalkboard() { for(x=0;x=chalkboard_width-fontsizeresult){True_LettersList.m_ltrLst[x].m_xSpeed=-Math.abs(True_LettersList.m_ltrLst[x].m_xSpeed);} True_LettersList.m_ltrLst[x].m_xPos+=True_LettersList.m_ltrLst[x].m_xSpeed; if((True_LettersList.m_ltrLst[x].m_xPos>chalkboard_width-fontsizeresult)||(True_LettersList.m_ltrLst[x].m_xPos<0)){True_LettersList.m_ltrLst[x].m_xSpeed*=(-1);} True_LettersList.m_ltrLst[x].m_yPos+=True_LettersList.m_ltrLst[x].m_ySpeed; if((True_LettersList.m_ltrLst[x].m_yPos>chalkboard_height)||(True_LettersList.m_ltrLst[x].m_yPos<0)){True_LettersList.m_ltrLst[x].m_ySpeed*=(-1);} } RepaintChalkboard(); if(True_LettersList.m_ExistsTarget==1) { for (x=0;x

JavaScript Animated Text | 00786