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// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#include <e32test.h>
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#include "TTYPES.H"
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TestLine::TestLine(const TPoint& aStart,const TPoint& aFinish, CTTypes* aTest):
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iStart(aStart),
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iFinish(aFinish),
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iTest(aTest)
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{}
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/**
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TestLine::Test
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Method to test the functionality within the TLinearDDA class (Linear Digital Differential Analyser)
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Called from the TTypes test script
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*/
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void TestLine::Test()
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{
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iLine.Construct(iStart,iFinish);
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TestSingleStep();
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iLine.Construct(iStart,iFinish);
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TestSingleScanLine();
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iLine.Construct(iStart,iFinish);
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TestNextStep();
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iLine.Construct(iStart,iFinish);
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TestJumpToXCoord();
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iLine.Construct(iStart,iFinish);
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TestJumpToYCoord();
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iLine.Construct(iStart,iFinish);
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TestJumpToRect();
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}
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/**
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TestLine::TestSingleStep
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Iterate through a line of pixels & confirm the final call to SingleStep rests on the last pixel
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*/
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void TestLine::TestSingleStep()
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{
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TPoint point;
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while(!iLine.SingleStep(point))
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{
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iTest->TEST((point.iX>=iStart.iX && point.iX<=iFinish.iX) || (point.iX<=iStart.iX && point.iX>=iFinish.iX));
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iTest->TEST((point.iY>=iStart.iY && point.iY<=iFinish.iY) || (point.iY<=iStart.iY && point.iY>=iFinish.iY));
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}
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iTest->TEST(point==iFinish);
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}
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/**
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TestLine::TestSingleScanLine
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Iterate through each scaline & confirm successive scan lines are concatenated.
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Confirm the last scanline holds the endppoint that was specified during construction of TLinearDDA
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*/
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void TestLine::TestSingleScanLine()
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{
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TPoint point1,point2;
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if(!iLine.SingleScanline(point1,point2))
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iTest->TEST(point1==iStart);
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TInt lastycoord=point1.iY;
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while(!iLine.SingleScanline(point1,point2))
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{
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iTest->TEST((point1.iX>=iStart.iX && point1.iX<=iFinish.iX) || (point1.iX<=iStart.iX && point1.iX>=iFinish.iX));
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iTest->TEST((point1.iY>=iStart.iY && point1.iY<=iFinish.iY) || (point1.iY<=iStart.iY && point1.iY>=iFinish.iY));
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iTest->TEST((point2.iX>=iStart.iX && point2.iX<=iFinish.iX) || (point2.iX<=iStart.iX && point2.iX>=iFinish.iX));
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iTest->TEST(point1.iY==point2.iY);
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iTest->TEST(Abs(point1.iY-lastycoord)==1);
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lastycoord=point1.iY;
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}
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iTest->TEST(point2==iFinish);
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}
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/**
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TestLine::TestNextStep
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Iterate trhough a the start position of each scanline & confirm they are concatenated.
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Confirm the last scanline holds the endpoint specified during TLinearDDA construction (iFinish)
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*/
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void TestLine::TestNextStep()
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{
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TPoint point,oldpoint;
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iLine.NextStep(oldpoint);
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iTest->TEST(oldpoint==iStart);
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while(!iLine.NextStep(point))
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{
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iTest->TEST((point.iX>=iStart.iX && point.iX<=iFinish.iX) || (point.iX<=iStart.iX && point.iX>=iFinish.iX));
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iTest->TEST((point.iY>=iStart.iY && point.iY<=iFinish.iY) || (point.iY<=iStart.iY && point.iY>=iFinish.iY));
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iTest->TEST(Abs(point.iY-oldpoint.iY)==1);
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oldpoint=point;
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}
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iTest->TEST(point==iFinish);
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}
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/**
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TestLine::TestJumpToRect
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Test the JumpToRect functionality, confirming that the start of the clipping rectangle is correctly detected (note we iterate through SingleStep to find the position exactly)
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*/
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void TestLine::TestJumpToRect()
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{
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TPoint midpoint=iStart+iFinish;
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midpoint.iX>>=1;
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midpoint.iY>>=1;
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TSize rsize(Abs(iStart.iX-iFinish.iX),Abs(iStart.iY-iFinish.iY));
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TRect rect(TPoint(iFinish.iX-(rsize.iWidth>>1),iFinish.iY-(rsize.iHeight>>1)),rsize);
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TRect largerect(TPoint(iFinish.iX-(rsize.iWidth<<1),iFinish.iY-(rsize.iHeight<<1)),TSize(rsize.iWidth<<2,rsize.iHeight<<2));
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TRect offsetrect(rect);
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offsetrect.Move(iStart-iFinish);
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if(iFinish.iX>iStart.iX)
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offsetrect.Move(TPoint(-(rsize.iWidth>>2),0));
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else
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offsetrect.Move(TPoint(rsize.iWidth>>2,0));
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if(iFinish.iY>iStart.iY)
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offsetrect.Move(TPoint(0,(rsize.iHeight>>1)+4));
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else
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offsetrect.Move(TPoint(0,-(rsize.iHeight>>1)-4));
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TPoint intersect,point;
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TLinearDDA line;
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iLine.JumpToRect(rect);
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iLine.SingleStep(intersect);
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line.Construct(iStart,iFinish);
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while(!line.SingleStep(point))
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if(point==intersect)
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break;
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iTest->TEST(point==intersect);
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while(!iLine.SingleStep(intersect))
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{
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line.SingleStep(point);
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iTest->TEST(point==intersect);
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}
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line.SingleStep(point);
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iTest->TEST(point==intersect);
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iTest->TEST(intersect==iFinish);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToRect(largerect);
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iLine.SingleStep(point);
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iTest->TEST(Abs(point.iX-iStart.iX)<=1);
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iTest->TEST(Abs(point.iY-iStart.iY)<=1);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToRect(offsetrect);
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iLine.SingleStep(point);
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if(rsize.iWidth>rsize.iHeight)
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iTest->TEST(point==iStart);
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else
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iTest->TEST(Min(Abs(point.iY-offsetrect.iTl.iY),Abs(point.iY-offsetrect.iBr.iY))==1);
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}
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/**
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TestLine::TestJumpToXCoord
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Test the JumpToXCoord functionailty, confirming the positions by SingleStep calls
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*/
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void TestLine::TestJumpToXCoord()
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{
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TInt xc1=(iStart.iX+iFinish.iX)>>1;
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TInt xc2=iStart.iX;
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TInt xc3=iFinish.iX;
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TInt xc4=Min(iStart.iX,iFinish.iX)-Abs(xc1);
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TInt xc5=Max(iStart.iX,iFinish.iX)+Abs(xc1);
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TInt y=0;
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TPoint intersect,point;
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TLinearDDA line;
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iLine.JumpToXCoord(xc1,y);
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line.Construct(iStart,iFinish);
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while(!line.SingleStep(point))
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if(point.iX==xc1)
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break;
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iTest->TEST(y==point.iY);
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while(!iLine.SingleStep(point))
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{
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line.SingleStep(intersect);
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iTest->TEST(point.iX==intersect.iX);
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iTest->TEST(point.iY==intersect.iY);
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}
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TBool done=line.SingleStep(intersect);
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iTest->TEST(done);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToXCoord(xc2,y);
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iTest->TEST(y==iStart.iY);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToXCoord(xc3,y);
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iLine.SingleStep(point);
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iTest->TEST(point.iX==xc3);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToXCoord(xc4,y);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToXCoord(xc5,y);
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}
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/**
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TestLine::TestJumpToYCoord
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Test the JumpToYCoord functionailty, confirming the positions by SingleStep calls
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*/
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void TestLine::TestJumpToYCoord()
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{
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TInt yc1=(iStart.iY+iFinish.iY)>>1;
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TInt yc2=iStart.iY;
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TInt yc3=iFinish.iY;
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TInt yc4=Min(iStart.iY,iFinish.iY)-Abs(yc1);
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TInt yc5=Max(iStart.iY,iFinish.iY)+Abs(yc1);
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TInt x=0;
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TPoint intersect,point;
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TLinearDDA line;
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iLine.JumpToYCoord(x,yc1);
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line.Construct(iStart,iFinish);
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while(!line.SingleStep(point))
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if(point.iY==yc1)
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break;
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iTest->TEST(TPoint(x,yc1)==point);
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while(!iLine.SingleStep(point))
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{
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line.SingleStep(intersect);
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iTest->TEST(point==intersect);
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}
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TBool done=line.SingleStep(intersect);
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iTest->TEST(done);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToYCoord(x,yc2);
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iTest->TEST(x==iStart.iX);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToYCoord(x,yc3);
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iLine.SingleStep(point);
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iTest->TEST(point.iY==yc3);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToYCoord(x,yc4);
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iLine.Construct(iStart,iFinish);
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iLine.JumpToYCoord(x,yc5);
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}
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