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Commit 5099cb78 authored by Alexander.Trofimov's avatar Alexander.Trofimov
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delete unused file 

use common/Drawings/ArcTo.js
parent d6de2669
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"use strict";
var ArcToCurvers = null;
var ArcToOnCanvas = null;
var HitToArc = null;
(function(){
// arcTo new version
function Arc3(ctx, fX, fY, fWidth, fHeight, fStartAngle, fSweepAngle)
{
var sin1 = Math.sin(fStartAngle);
var cos1 = Math.cos(fStartAngle);
var __x = cos1 / fWidth;
var __y = sin1 / fHeight;
var l = 1 / Math.sqrt(__x * __x + __y * __y);
var cx = fX - l * cos1;
var cy = fY - l * sin1;
Arc2(ctx, cx - fWidth, cy - fHeight, 2 * fWidth, 2 * fHeight, fStartAngle, fSweepAngle);
}
function Arc2(ctx, fX, fY, fWidth, fHeight, fStartAngle, fSweepAngle)
{
if (0 >= fWidth || 0 >= fHeight)
return;
fStartAngle = -fStartAngle;
fSweepAngle = -fSweepAngle;
if (false /*is path closed*/ )
{
var fStartX = fX + fWidth / 2.0 + fWidth / 2 * Math.cos( AngToEllPrm( fStartAngle, fWidth / 2, fHeight / 2 ) );
var fStartY = fY + fHeight / 2.0 - fHeight / 2 * Math.sin( AngToEllPrm ( fStartAngle, fWidth / 2, fHeight / 2 ) );
if ( fSweepAngle < (2 * Math.PI) )
{
ctx._m(fStartX, fStartY);
}
}
var bClockDirection = false;
var fEndAngle = (2 * Math.PI) -(fSweepAngle + fStartAngle);
var fSrtAngle = (2 * Math.PI) - fStartAngle;
if( fSweepAngle > 0 )
bClockDirection = true;
if(Math.abs(fSweepAngle) >= (2 * Math.PI))
{
Ellipse(ctx, fX + fWidth / 2, fY + fHeight / 2, fWidth / 2, fHeight / 2);
}
else
{
EllipseArc(ctx, fX + fWidth / 2, fY + fHeight / 2, fWidth / 2, fHeight / 2, fSrtAngle, fEndAngle, bClockDirection);
}
}
function AngToEllPrm(fAngle, fXRad, fYRad)
{
return Math.atan2( Math.sin( fAngle ) / fYRad, Math.cos( fAngle ) / fXRad );
}
function Ellipse(ctx, fX, fY, fXRad, fYRad)
{
ctx._m(fX - fXRad, fY);
var c_fKappa = 0.552;
ctx._c(fX - fXRad, fY + fYRad * c_fKappa, fX - fXRad * c_fKappa, fY + fYRad, fX, fY + fYRad);
ctx._c(fX + fXRad * c_fKappa, fY + fYRad, fX + fXRad, fY + fYRad * c_fKappa, fX + fXRad, fY);
ctx._c(fX + fXRad, fY - fYRad * c_fKappa, fX + fXRad * c_fKappa, fY - fYRad, fX, fY - fYRad);
ctx._c(fX - fXRad * c_fKappa, fY - fYRad, fX - fXRad, fY - fYRad * c_fKappa, fX - fXRad, fY);
}
function EllipseArc(ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, bClockDirection)
{
while ( fAngle1 < 0 )
fAngle1 += (2 * Math.PI);
while ( fAngle1 > (2 * Math.PI) )
fAngle1 -= (2 * Math.PI);
while ( fAngle2 < 0 )
fAngle2 += (2 * Math.PI);
while ( fAngle2 >= (2 * Math.PI) )
fAngle2 -= (2 * Math.PI);
if ( !bClockDirection )
{
if ( fAngle1 <= fAngle2 )
EllipseArc2(ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, false);
else
{
EllipseArc2(ctx, fX, fY, fXRad, fYRad, fAngle1, 2 * Math.PI, false);
EllipseArc2(ctx, fX, fY, fXRad, fYRad, 0, fAngle2, false);
}
}
else
{
if ( fAngle1 >= fAngle2 )
EllipseArc2(ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, true);
else
{
EllipseArc2(ctx, fX, fY, fXRad, fYRad, fAngle1, 0, true);
EllipseArc2(ctx, fX, fY, fXRad, fYRad, 2 * Math.PI, fAngle2, true);
}
}
}
function EllipseArc2(ctx, fX, fY, fXRad, fYRad, dAngle1, dAngle2, bClockDirection)
{
var nFirstPointQuard = ((2 * dAngle1 / Math.PI) >> 0) + 1;
var nSecondPointQuard = ((2 * dAngle2 / Math.PI) >> 0) + 1;
nSecondPointQuard = Math.min( 4, Math.max( 1, nSecondPointQuard ) );
nFirstPointQuard = Math.min( 4, Math.max( 1, nFirstPointQuard ) );
var fStartX = fX + fXRad * Math.cos( AngToEllPrm( dAngle1, fXRad, fYRad ) );
var fStartY = fY + fYRad * Math.sin( AngToEllPrm( dAngle1, fXRad, fYRad ) );
var EndPoint = {X: 0, Y: 0};
//ctx._l(fStartX, fStartY);
var fCurX = fStartX, fCurY = fStartY;
var dStartAngle = dAngle1;
var dEndAngle = 0;
if ( !bClockDirection )
{
for( var nIndex = nFirstPointQuard; nIndex <= nSecondPointQuard; nIndex++ )
{
if ( nIndex == nSecondPointQuard )
dEndAngle = dAngle2;
else
dEndAngle = nIndex * Math.PI / 2;
if ( !( nIndex == nFirstPointQuard ) )
dStartAngle = (nIndex - 1 ) * Math.PI / 2;
EndPoint = EllipseArc3(ctx, fX, fY, fXRad, fYRad, AngToEllPrm( dStartAngle, fXRad, fYRad ), AngToEllPrm( dEndAngle, fXRad, fYRad ), false);
}
}
else
{
for( var nIndex = nFirstPointQuard; nIndex >= nSecondPointQuard; nIndex-- )
{
if ( nIndex == nFirstPointQuard )
dStartAngle = dAngle1;
else
dStartAngle = nIndex * Math.PI / 2;
if ( !( nIndex == nSecondPointQuard ) )
dEndAngle = (nIndex - 1 ) * Math.PI / 2;
else
dEndAngle = dAngle2;
EndPoint = EllipseArc3(ctx, fX, fY, fXRad, fYRad, AngToEllPrm( dStartAngle, fXRad, fYRad ), AngToEllPrm( dEndAngle, fXRad, fYRad ), false);
}
}
}
function EllipseArc3(ctx, fX, fY, fXRad, fYRad, dAngle1, dAngle2, bClockDirection)
{
var fAlpha = Math.sin( dAngle2 - dAngle1 ) * ( Math.sqrt( 4.0 + 3.0 * Math.tan( (dAngle2 - dAngle1) / 2.0 ) * Math.tan( (dAngle2 - dAngle1) / 2.0 ) ) - 1.0 ) / 3.0;
var sin1 = Math.sin(dAngle1);
var cos1 = Math.cos(dAngle1);
var sin2 = Math.sin(dAngle2);
var cos2 = Math.cos(dAngle2);
var fX1 = fX + fXRad * cos1;
var fY1 = fY + fYRad * sin1;
var fX2 = fX + fXRad * cos2;
var fY2 = fY + fYRad * sin2;
var fCX1 = fX1 - fAlpha * fXRad * sin1;
var fCY1 = fY1 + fAlpha * fYRad * cos1;
var fCX2 = fX2 + fAlpha * fXRad * sin2;
var fCY2 = fY2 - fAlpha * fYRad * cos2;
if ( !bClockDirection )
{
ctx._c(fCX1, fCY1, fCX2, fCY2, fX2, fY2);
return {X: fX2, Y: fY2};
}
else
{
ctx._c(fCX2, fCY2, fCX1, fCY1, fX1, fY1);
return {X: fX1, Y: fY1};
}
}
ArcToCurvers = Arc3;
// ----------------------------------------------------------------------- //
function _ArcToOnCanvas(context, start_x, start_y, width_r, height_r, start_ang, sweep_ang)
{
var _sin = Math.sin(start_ang);
var _cos = Math.cos(start_ang);
var _x = _cos / width_r;
var _y = _sin / height_r;
var _l = 1 / Math.sqrt(_x * _x + _y * _y);
var _cx = start_x - _l * _cos;
var _cy = start_y - _l * _sin;
ArcTo2OnCanvas(context, _cx - width_r, _cy - height_r, 2 * width_r, 2 * height_r, start_ang, sweep_ang);
}
function ArcTo2OnCanvas(context, _l_c_x, _l_c_y, width, height, start_ang, sweep_ang)
{
if (0 >= width || 0 >= height)
return;
start_ang = -start_ang;
sweep_ang = -sweep_ang;
var bClockDirection = false;
var fEndAngle = (2 * Math.PI) - (sweep_ang + start_ang);
var fSrtAngle = (2 * Math.PI) - start_ang;
if (sweep_ang > 0)
{
bClockDirection = true;
}
if (Math.abs(sweep_ang) >= (2 * Math.PI))
{
EllipseOnCanvas(context, _l_c_x + width / 2, _l_c_y + height / 2, width / 2, height / 2);
}
else
{
EllipseArcOnCanvas(context, _l_c_x + width / 2, _l_c_y + height / 2, width / 2, height / 2, fSrtAngle, fEndAngle, bClockDirection);
}
}
function EllipseOnCanvas(ctx, fX, fY, fXRad, fYRad)
{
ctx.moveTo(fX - fXRad, fY);
var c_fKappa = 0.552;
ctx.bezierCurveTo(fX - fXRad, fY + fYRad * c_fKappa, fX - fXRad * c_fKappa, fY + fYRad, fX, fY + fYRad);
ctx.bezierCurveTo(fX + fXRad * c_fKappa, fY + fYRad, fX + fXRad, fY + fYRad * c_fKappa, fX + fXRad, fY);
ctx.bezierCurveTo(fX + fXRad, fY - fYRad * c_fKappa, fX + fXRad * c_fKappa, fY - fYRad, fX, fY - fYRad);
ctx.bezierCurveTo(fX - fXRad * c_fKappa, fY - fYRad, fX - fXRad, fY - fYRad * c_fKappa, fX - fXRad, fY);
}
function EllipseArcOnCanvas(ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, bClockDirection)
{
while ( fAngle1 < 0 )
fAngle1 += (2 * Math.PI);
while ( fAngle1 > (2 * Math.PI) )
fAngle1 -= (2 * Math.PI);
while ( fAngle2 < 0 )
fAngle2 += (2 * Math.PI);
while ( fAngle2 >= (2 * Math.PI) )
fAngle2 -= (2 * Math.PI);
if ( !bClockDirection )
{
if ( fAngle1 <= fAngle2 )
EllipseArc2OnCanvas(ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, false);
else
{
EllipseArc2OnCanvas(ctx, fX, fY, fXRad, fYRad, fAngle1, 2 * Math.PI, false);
EllipseArc2OnCanvas(ctx, fX, fY, fXRad, fYRad, 0, fAngle2, false);
}
}
else
{
if ( fAngle1 >= fAngle2 )
EllipseArc2OnCanvas(ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, true);
else
{
EllipseArc2OnCanvas(ctx, fX, fY, fXRad, fYRad, fAngle1, 0, true);
EllipseArc2OnCanvas(ctx, fX, fY, fXRad, fYRad, 2 * Math.PI, fAngle2, true);
}
}
}
function EllipseArc2OnCanvas(ctx, fX, fY, fXRad, fYRad, dAngle1, dAngle2, bClockDirection)
{
var nFirstPointQuard = ((2 * dAngle1 / Math.PI) >> 0) + 1;
var nSecondPointQuard = ((2 * dAngle2 / Math.PI) >> 0) + 1;
nSecondPointQuard = Math.min( 4, Math.max( 1, nSecondPointQuard ) );
nFirstPointQuard = Math.min( 4, Math.max( 1, nFirstPointQuard ) );
var fStartX = fX + fXRad * Math.cos( AngToEllPrm( dAngle1, fXRad, fYRad ) );
var fStartY = fY + fYRad * Math.sin( AngToEllPrm( dAngle1, fXRad, fYRad ) );
var EndPoint = {X: 0, Y: 0};
ctx.lineTo(fStartX, fStartY);
var fCurX = fStartX, fCurY = fStartY;
var dStartAngle = dAngle1;
var dEndAngle = 0;
if ( !bClockDirection )
{
for( var nIndex = nFirstPointQuard; nIndex <= nSecondPointQuard; nIndex++ )
{
if ( nIndex == nSecondPointQuard )
dEndAngle = dAngle2;
else
dEndAngle = nIndex * Math.PI / 2;
if ( !( nIndex == nFirstPointQuard ) )
dStartAngle = (nIndex - 1 ) * Math.PI / 2;
EndPoint = EllipseArc3OnCanvas(ctx, fX, fY, fXRad, fYRad, AngToEllPrm( dStartAngle, fXRad, fYRad ), AngToEllPrm( dEndAngle, fXRad, fYRad ), false);
}
}
else
{
for( var nIndex = nFirstPointQuard; nIndex >= nSecondPointQuard; nIndex-- )
{
if ( nIndex == nFirstPointQuard )
dStartAngle = dAngle1;
else
dStartAngle = nIndex * Math.PI / 2;
if ( !( nIndex == nSecondPointQuard ) )
dEndAngle = (nIndex - 1 ) * Math.PI / 2;
else
dEndAngle = dAngle2;
EndPoint = EllipseArc3OnCanvas(ctx, fX, fY, fXRad, fYRad, AngToEllPrm( dStartAngle, fXRad, fYRad ), AngToEllPrm( dEndAngle, fXRad, fYRad ), false);
}
}
}
function EllipseArc3OnCanvas(ctx, fX, fY, fXRad, fYRad, dAngle1, dAngle2, bClockDirection)
{
var fAlpha = Math.sin( dAngle2 - dAngle1 ) * ( Math.sqrt( 4.0 + 3.0 * Math.tan( (dAngle2 - dAngle1) / 2.0 ) * Math.tan( (dAngle2 - dAngle1) / 2.0 ) ) - 1.0 ) / 3.0;
var sin1 = Math.sin(dAngle1);
var cos1 = Math.cos(dAngle1);
var sin2 = Math.sin(dAngle2);
var cos2 = Math.cos(dAngle2);
var fX1 = fX + fXRad * cos1;
var fY1 = fY + fYRad * sin1;
var fX2 = fX + fXRad * cos2;
var fY2 = fY + fYRad * sin2;
var fCX1 = fX1 - fAlpha * fXRad * sin1;
var fCY1 = fY1 + fAlpha * fYRad * cos1;
var fCX2 = fX2 + fAlpha * fXRad * sin2;
var fCY2 = fY2 - fAlpha * fYRad * cos2;
if ( !bClockDirection )
{
ctx.bezierCurveTo(fCX1, fCY1, fCX2, fCY2, fX2, fY2);
return {X: fX2, Y: fY2};
}
else
{
ctx.bezierCurveTo(fCX2, fCY2, fCX1, fCY1, fX1, fY1);
return {X: fX1, Y: fY1};
}
}
function _HitToArc(context, px, py, start_x, start_y, width_r, height_r, start_ang, sweep_ang)
{
var _sin = Math.sin(start_ang);
var _cos = Math.cos(start_ang);
var _x = _cos / width_r;
var _y = _sin / height_r;
var _l = 1 / Math.sqrt(_x * _x + _y * _y);
var _cx = start_x - _l * _cos;
var _cy = start_y - _l * _sin;
return HitToArc2(px, py, context, _cx - width_r, _cy - height_r, 2 * width_r, 2 * height_r, start_ang, sweep_ang);
}
function HitToArc2(px, py, context, _l_c_x, _l_c_y, width, height, start_ang, sweep_ang)
{
if (0 >= width || 0 >= height)
return;
start_ang = -start_ang;
sweep_ang = -sweep_ang;
var bClockDirection = false;
var fEndAngle = (2 * Math.PI) - (sweep_ang + start_ang);
var fSrtAngle = (2 * Math.PI) - start_ang;
if (sweep_ang > 0)
{
bClockDirection = true;
}
if (Math.abs(sweep_ang) >= (2 * Math.PI))
{
return HitToEllipseOnCanvas(px, py, context, _l_c_x + width / 2, _l_c_y + height / 2, width / 2, height / 2);
}
else
{
return HitToEllipseArcOnCanvas(px, py, context, _l_c_x + width / 2, _l_c_y + height / 2, width / 2, height / 2, fSrtAngle, fEndAngle, bClockDirection);
}
}
function HitToEllipseOnCanvas(px, py, ctx, fX, fY, fXRad, fYRad)
{
var c_fKappa = 0.552;
return HitInBezier4(ctx, px, py, fX - fXRad, fY, fX - fXRad, fY + fYRad * c_fKappa, fX - fXRad * c_fKappa, fY + fYRad, fX, fY + fYRad) ||
HitInBezier4(ctx, px, py, fX, fY + fYRad, fX + fXRad * c_fKappa, fY + fYRad, fX + fXRad, fY + fYRad * c_fKappa, fX + fXRad, fY)||
HitInBezier4(ctx, px, py, fX + fXRad, fY, fX + fXRad, fY - fYRad * c_fKappa, fX + fXRad * c_fKappa, fY - fYRad, fX, fY - fYRad)||
HitInBezier4(ctx, px, py, fX, fY - fYRad, fX - fXRad * c_fKappa, fY - fYRad, fX - fXRad, fY - fYRad * c_fKappa, fX - fXRad, fY);
}
function HitToEllipseArcOnCanvas(px, py, ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, bClockDirection)
{
while ( fAngle1 < 0 )
fAngle1 += (2 * Math.PI);
while ( fAngle1 > (2 * Math.PI) )
fAngle1 -= (2 * Math.PI);
while ( fAngle2 < 0 )
fAngle2 += (2 * Math.PI);
while ( fAngle2 >= (2 * Math.PI) )
fAngle2 -= (2 * Math.PI);
if ( !bClockDirection )
{
if ( fAngle1 <= fAngle2 )
return HitToEllipseArc2OnCanvas(px, py,ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, false);
else
{
return HitToEllipseArc2OnCanvas(px, py,ctx, fX, fY, fXRad, fYRad, fAngle1, 2 * Math.PI, false)|| HitToEllipseArc2OnCanvas(px, py,ctx, fX, fY, fXRad, fYRad, 0, fAngle2, false);
}
}
else
{
if ( fAngle1 >= fAngle2 )
return HitToEllipseArc2OnCanvas(px, py,ctx, fX, fY, fXRad, fYRad, fAngle1, fAngle2, true);
else
{
return HitToEllipseArc2OnCanvas(px, py, ctx, fX, fY, fXRad, fYRad, fAngle1, 0, true) || HitToEllipseArc2OnCanvas(px, py,ctx, fX, fY, fXRad, fYRad, 2 * Math.PI, fAngle2, true);
}
}
}
function HitToEllipseArc2OnCanvas(px, py, ctx, fX, fY, fXRad, fYRad, dAngle1, dAngle2, bClockDirection)
{
var nFirstPointQuard = ((2 * dAngle1 / Math.PI) >> 0) + 1;
var nSecondPointQuard = ((2 * dAngle2 / Math.PI) >> 0) + 1;
nSecondPointQuard = Math.min( 4, Math.max( 1, nSecondPointQuard ) );
nFirstPointQuard = Math.min( 4, Math.max( 1, nFirstPointQuard ) );
var fStartX = fX + fXRad * Math.cos( AngToEllPrm( dAngle1, fXRad, fYRad ) );
var fStartY = fY + fYRad * Math.sin( AngToEllPrm( dAngle1, fXRad, fYRad ) );
var EndPoint = {X: fStartX, Y: fStartY, hit : false};
var dStartAngle = dAngle1;
var dEndAngle = 0;
if ( !bClockDirection )
{
for( var nIndex = nFirstPointQuard; nIndex <= nSecondPointQuard; nIndex++ )
{
if ( nIndex == nSecondPointQuard )
dEndAngle = dAngle2;
else
dEndAngle = nIndex * Math.PI / 2;
if ( !( nIndex == nFirstPointQuard ) )
dStartAngle = (nIndex - 1 ) * Math.PI / 2;
EndPoint = HitToEllipseArc3OnCanvas(px, py, EndPoint, ctx, fX, fY, fXRad, fYRad, AngToEllPrm( dStartAngle, fXRad, fYRad ), AngToEllPrm( dEndAngle, fXRad, fYRad ), false);
if(EndPoint.hit)
{
return true;
}
}
}
else
{
for( var nIndex = nFirstPointQuard; nIndex >= nSecondPointQuard; nIndex-- )
{
if ( nIndex == nFirstPointQuard )
dStartAngle = dAngle1;
else
dStartAngle = nIndex * Math.PI / 2;
if ( !( nIndex == nSecondPointQuard ) )
dEndAngle = (nIndex - 1 ) * Math.PI / 2;
else
dEndAngle = dAngle2;
EndPoint = HitToEllipseArc3OnCanvas(px, py, EndPoint, ctx, fX, fY, fXRad, fYRad, AngToEllPrm( dStartAngle, fXRad, fYRad ), AngToEllPrm( dEndAngle, fXRad, fYRad ), false);
if(EndPoint.hit)
{
return true;
}
}
}
return false;
}
function HitToEllipseArc3OnCanvas(px, py, EndPoint, ctx, fX, fY, fXRad, fYRad, dAngle1, dAngle2, bClockDirection)
{
var fAlpha = Math.sin( dAngle2 - dAngle1 ) * ( Math.sqrt( 4.0 + 3.0 * Math.tan( (dAngle2 - dAngle1) / 2.0 ) * Math.tan( (dAngle2 - dAngle1) / 2.0 ) ) - 1.0 ) / 3.0;
var sin1 = Math.sin(dAngle1);
var cos1 = Math.cos(dAngle1);
var sin2 = Math.sin(dAngle2);
var cos2 = Math.cos(dAngle2);
var fX1 = fX + fXRad * cos1;
var fY1 = fY + fYRad * sin1;
var fX2 = fX + fXRad * cos2;
var fY2 = fY + fYRad * sin2;
var fCX1 = fX1 - fAlpha * fXRad * sin1;
var fCY1 = fY1 + fAlpha * fYRad * cos1;
var fCX2 = fX2 + fAlpha * fXRad * sin2;
var fCY2 = fY2 - fAlpha * fYRad * cos2;
if ( !bClockDirection )
{
return {X: fX2, Y: fY2, hit : HitInBezier4(ctx, px, py,EndPoint.X, EndPoint.Y, fCX1, fCY1, fCX2, fCY2, fX2, fY2)};
}
else
{
return {X: fX1, Y: fY1, hit : HitInBezier4(ctx, px, py,EndPoint.X, EndPoint.Y, fCX2, fCY2, fCX1, fCY1, fX1, fY1)};
}
}
ArcToOnCanvas = _ArcToOnCanvas;
HitToArc = _HitToArc;
// ----------------------------------------------------------------------- //
})();
function getArrayPointsCurveBezierAtArcTo(fX, fY, fWidth, fHeight, fStartAngle, fSweepAngle, lastPointX, lastPointY)
{
var sin1 = Math.sin(fStartAngle);
var cos1 = Math.cos(fStartAngle);
var __x = cos1 / fWidth;
var __y = sin1 / fHeight;
var l = 1 / Math.sqrt(__x * __x + __y * __y);
var cx = fX - l * cos1;
var cy = fY - l * sin1;
return getArrayPointsCurveBezierAtArcTo2(cx - fWidth, cy - fHeight, 2 * fWidth, 2 * fHeight, fStartAngle, fSweepAngle, lastPointX, lastPointY);
}
function getArrayPointsCurveBezierAtArcTo2(fX, fY, fWidth, fHeight, fStartAngle, fSweepAngle, lastPointX, lastPointY)
{
if (0 >= fWidth || 0 >= fHeight)
return [];
fStartAngle = -fStartAngle;
fSweepAngle = -fSweepAngle;
var bClockDirection = false;
var fEndAngle = (2 * Math.PI) -(fSweepAngle + fStartAngle);
var fSrtAngle = (2 * Math.PI) - fStartAngle;
if( fSweepAngle > 0 )
bClockDirection = true;
if(Math.abs(fSweepAngle) >= (2 * Math.PI))
{
return getArrayPointsCurveBezierAtArcToEllipse(fX + fWidth / 2, fY + fHeight / 2, fWidth / 2, fHeight / 2);
}
else
{
return getArrayPointsCurveBezierAtArcToEllipseArc(fX + fWidth / 2, fY + fHeight / 2, fWidth / 2, fHeight / 2, fSrtAngle, fEndAngle, bClockDirection, lastPointX, lastPointY);
}
}
function getArrayPointsCurveBezierAtArcToEllipse(fX, fY, fXRad, fYRad)
{
var c_fKappa = 0.552;
var ret_arr = [];
ret_arr.push(
{
x0: fX - fXRad,
y0: fY,
x1: fX - fXRad,
y1: fY + fYRad * c_fKappa,
x2: fX - fXRad * c_fKappa,
y2: fY + fYRad,
x3: fX,
y3: fY + fYRad
}
);
ret_arr.push(
{
x0: fX,
y0: fY + fYRad,
x1: fX + fXRad * c_fKappa,
y1: fY + fYRad,
x2: fX + fXRad,
y2: fY + fYRad * c_fKappa,
x3: fX + fXRad,
y3: fY
}
);
ret_arr.push(
{
x0: fX + fXRad,
y0: fY,
x1: fX + fXRad,
y1: fY - fYRad * c_fKappa,
x2: fX + fXRad * c_fKappa,
y2: fY - fYRad,
x3: fX,
y3: fY - fYRad
}
);
ret_arr.push(
{
x0: fX + fXRad,
y0: fY,
x1: fX + fXRad,
y1: fY - fYRad * c_fKappa,
x2: fX + fXRad * c_fKappa,
y2: fY - fYRad,
x3: fX,
y3: fY - fYRad
}
);
ret_arr.push(
{
x0: fX,
y0: fY - fYRad,
x1: fX - fXRad * c_fKappa,
y1: fY - fYRad,
x2: fX - fXRad,
y2: fY - fYRad * c_fKappa,
x3: fX - fXRad,
y3: fY
}
);
return ret_arr;
}
function getArrayPointsCurveBezierAtArcToEllipseArc(fX, fY, fXRad, fYRad, fAngle1, fAngle2, bClockDirection, lastPointX, lastPointY)
{
while ( fAngle1 < 0 )
fAngle1 += (2 * Math.PI);
while ( fAngle1 > (2 * Math.PI) )
fAngle1 -= (2 * Math.PI);
while ( fAngle2 < 0 )
fAngle2 += (2 * Math.PI);
while ( fAngle2 >= (2 * Math.PI) )
fAngle2 -= (2 * Math.PI);
if ( !bClockDirection )
{
if ( fAngle1 <= fAngle2 )
return getArrayPointsCurveBezierAtArcToEllipseArc2(fX, fY, fXRad, fYRad, fAngle1, fAngle2, false, lastPointX, lastPointY);
else
{
var tmp = getArrayPointsCurveBezierAtArcToEllipseArc2(fX, fY, fXRad, fYRad, fAngle1, 2 * Math.PI, false, lastPointX, lastPointY);
return tmp.concat(getArrayPointsCurveBezierAtArcToEllipseArc2(fX, fY, fXRad, fYRad, 0, fAngle2, false, tmp.x4, tmp.y4));
}
}
else
{
if ( fAngle1 >= fAngle2 )
return getArrayPointsCurveBezierAtArcToEllipseArc2(fX, fY, fXRad, fYRad, fAngle1, fAngle2, true, lastPointX, lastPointY);
else
{
tmp = getArrayPointsCurveBezierAtArcToEllipseArc2(fX, fY, fXRad, fYRad, fAngle1, 0, true, lastPointX, lastPointY);
return tmp.concat(getArrayPointsCurveBezierAtArcToEllipseArc2(fX, fY, fXRad, fYRad, 2 * Math.PI, fAngle2, true, tmp.x4, tmp.y4));
}
}
}
function getArrayPointsCurveBezierAtArcToEllipseArc2( fX, fY, fXRad, fYRad, dAngle1, dAngle2, bClockDirection, lastPointX, lastPointY)
{
var nFirstPointQuard = ((2 * dAngle1 / Math.PI) >> 0) + 1;
var nSecondPointQuard = ((2 * dAngle2 / Math.PI) >> 0) + 1;
nSecondPointQuard = Math.min( 4, Math.max( 1, nSecondPointQuard ) );
nFirstPointQuard = Math.min( 4, Math.max( 1, nFirstPointQuard ) );
var fStartX = fX + fXRad * Math.cos( AngToEllPrm( dAngle1, fXRad, fYRad ) );
var fStartY = fY + fYRad * Math.sin( AngToEllPrm( dAngle1, fXRad, fYRad ) );
var EndPoint = {X: 0, Y: 0};
//ctx._l(fStartX, fStartY);
var fCurX = fStartX, fCurY = fStartY;
var dStartAngle = dAngle1;
var dEndAngle = 0;
if ( !bClockDirection )
{
for( var nIndex = nFirstPointQuard; nIndex <= nSecondPointQuard; nIndex++ )
{
if ( nIndex == nSecondPointQuard )
dEndAngle = dAngle2;
else
dEndAngle = nIndex * Math.PI / 2;
if ( !( nIndex == nFirstPointQuard ) )
dStartAngle = (nIndex - 1 ) * Math.PI / 2;
return getArrayPointsCurveBezierAtArcToEllipseArc3(fX, fY, fXRad, fYRad, AngToEllPrm( dStartAngle, fXRad, fYRad ), AngToEllPrm( dEndAngle, fXRad, fYRad ), false, lastPointX, lastPointY);
}
}
else
{
for( var nIndex = nFirstPointQuard; nIndex >= nSecondPointQuard; nIndex-- )
{
if ( nIndex == nFirstPointQuard )
dStartAngle = dAngle1;
else
dStartAngle = nIndex * Math.PI / 2;
if ( !( nIndex == nSecondPointQuard ) )
dEndAngle = (nIndex - 1 ) * Math.PI / 2;
else
dEndAngle = dAngle2;
return getArrayPointsCurveBezierAtArcToEllipseArc3(fX, fY, fXRad, fYRad, AngToEllPrm( dStartAngle, fXRad, fYRad ), AngToEllPrm( dEndAngle, fXRad, fYRad ), false, lastPointX, lastPointY);
}
}
}
function getArrayPointsCurveBezierAtArcToEllipseArc3(fX, fY, fXRad, fYRad, dAngle1, dAngle2, bClockDirection, lastPointX, lastPointY)
{
var fAlpha = Math.sin( dAngle2 - dAngle1 ) * ( Math.sqrt( 4.0 + 3.0 * Math.tan( (dAngle2 - dAngle1) / 2.0 ) * Math.tan( (dAngle2 - dAngle1) / 2.0 ) ) - 1.0 ) / 3.0;
var sin1 = Math.sin(dAngle1);
var cos1 = Math.cos(dAngle1);
var sin2 = Math.sin(dAngle2);
var cos2 = Math.cos(dAngle2);
var fX1 = fX + fXRad * cos1;
var fY1 = fY + fYRad * sin1;
var fX2 = fX + fXRad * cos2;
var fY2 = fY + fYRad * sin2;
var fCX1 = fX1 - fAlpha * fXRad * sin1;
var fCY1 = fY1 + fAlpha * fYRad * cos1;
var fCX2 = fX2 + fAlpha * fXRad * sin2;
var fCY2 = fY2 - fAlpha * fYRad * cos2;
if ( !bClockDirection )
{
return [{x0: lastPointX, y0:lastPointY, x1:fCX1, y1: fCY1, x2:fCX2, y2: fCY2, x3:fX2, y3: fY2}];
}
else
{
return [{x0: lastPointX, y0:lastPointY, x1:fCX2, y1: fCY2, x2:fCX1, y2: fCY1, x3:fX1, y3: fY1}];
}
}
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