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1 // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // |
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15 |
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16 #include <e32test.h> |
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17 #include "TTYPES.H" |
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18 |
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19 TestLine::TestLine(const TPoint& aStart,const TPoint& aFinish, CTTypes* aTest): |
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20 iStart(aStart), |
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21 iFinish(aFinish), |
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22 iTest(aTest) |
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23 {} |
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24 |
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25 /** |
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26 TestLine::Test |
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27 |
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28 Method to test the functionality within the TLinearDDA class (Linear Digital Differential Analyser) |
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29 Called from the TTypes test script |
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30 */ |
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31 void TestLine::Test() |
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32 { |
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33 iLine.Construct(iStart,iFinish); |
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34 TestSingleStep(); |
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35 iLine.Construct(iStart,iFinish); |
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36 TestSingleScanLine(); |
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37 iLine.Construct(iStart,iFinish); |
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38 TestNextStep(); |
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39 iLine.Construct(iStart,iFinish); |
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40 TestJumpToXCoord(); |
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41 iLine.Construct(iStart,iFinish); |
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42 TestJumpToYCoord(); |
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43 iLine.Construct(iStart,iFinish); |
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44 TestJumpToRect(); |
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45 } |
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46 |
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47 /** |
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48 TestLine::TestSingleStep |
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49 |
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50 Iterate through a line of pixels & confirm the final call to SingleStep rests on the last pixel |
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51 */ |
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52 void TestLine::TestSingleStep() |
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53 { |
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54 TPoint point; |
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55 while(!iLine.SingleStep(point)) |
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56 { |
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57 iTest->TEST((point.iX>=iStart.iX && point.iX<=iFinish.iX) || (point.iX<=iStart.iX && point.iX>=iFinish.iX)); |
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58 iTest->TEST((point.iY>=iStart.iY && point.iY<=iFinish.iY) || (point.iY<=iStart.iY && point.iY>=iFinish.iY)); |
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59 } |
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60 iTest->TEST(point==iFinish); |
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61 } |
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62 |
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63 /** |
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64 TestLine::TestSingleScanLine |
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65 |
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66 Iterate through each scaline & confirm successive scan lines are concatenated. |
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67 Confirm the last scanline holds the endppoint that was specified during construction of TLinearDDA |
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68 */ |
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69 void TestLine::TestSingleScanLine() |
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70 { |
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71 TPoint point1,point2; |
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72 if(!iLine.SingleScanline(point1,point2)) |
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73 iTest->TEST(point1==iStart); |
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74 TInt lastycoord=point1.iY; |
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75 while(!iLine.SingleScanline(point1,point2)) |
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76 { |
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77 iTest->TEST((point1.iX>=iStart.iX && point1.iX<=iFinish.iX) || (point1.iX<=iStart.iX && point1.iX>=iFinish.iX)); |
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78 iTest->TEST((point1.iY>=iStart.iY && point1.iY<=iFinish.iY) || (point1.iY<=iStart.iY && point1.iY>=iFinish.iY)); |
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79 iTest->TEST((point2.iX>=iStart.iX && point2.iX<=iFinish.iX) || (point2.iX<=iStart.iX && point2.iX>=iFinish.iX)); |
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80 iTest->TEST(point1.iY==point2.iY); |
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81 iTest->TEST(Abs(point1.iY-lastycoord)==1); |
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82 lastycoord=point1.iY; |
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83 } |
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84 iTest->TEST(point2==iFinish); |
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85 } |
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86 |
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87 /** |
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88 TestLine::TestNextStep |
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89 |
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90 Iterate trhough a the start position of each scanline & confirm they are concatenated. |
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91 Confirm the last scanline holds the endpoint specified during TLinearDDA construction (iFinish) |
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92 */ |
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93 void TestLine::TestNextStep() |
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94 { |
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95 TPoint point,oldpoint; |
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96 iLine.NextStep(oldpoint); |
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97 iTest->TEST(oldpoint==iStart); |
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98 while(!iLine.NextStep(point)) |
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99 { |
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100 iTest->TEST((point.iX>=iStart.iX && point.iX<=iFinish.iX) || (point.iX<=iStart.iX && point.iX>=iFinish.iX)); |
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101 iTest->TEST((point.iY>=iStart.iY && point.iY<=iFinish.iY) || (point.iY<=iStart.iY && point.iY>=iFinish.iY)); |
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102 iTest->TEST(Abs(point.iY-oldpoint.iY)==1); |
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103 oldpoint=point; |
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104 } |
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105 iTest->TEST(point==iFinish); |
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106 } |
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107 |
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108 /** |
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109 TestLine::TestJumpToRect |
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110 |
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111 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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112 */ |
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113 void TestLine::TestJumpToRect() |
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114 { |
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115 TPoint midpoint=iStart+iFinish; |
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116 midpoint.iX>>=1; |
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117 midpoint.iY>>=1; |
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118 TSize rsize(Abs(iStart.iX-iFinish.iX),Abs(iStart.iY-iFinish.iY)); |
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119 TRect rect(TPoint(iFinish.iX-(rsize.iWidth>>1),iFinish.iY-(rsize.iHeight>>1)),rsize); |
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120 TRect largerect(TPoint(iFinish.iX-(rsize.iWidth<<1),iFinish.iY-(rsize.iHeight<<1)),TSize(rsize.iWidth<<2,rsize.iHeight<<2)); |
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121 TRect offsetrect(rect); |
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122 offsetrect.Move(iStart-iFinish); |
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123 if(iFinish.iX>iStart.iX) |
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124 offsetrect.Move(TPoint(-(rsize.iWidth>>2),0)); |
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125 else |
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126 offsetrect.Move(TPoint(rsize.iWidth>>2,0)); |
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127 if(iFinish.iY>iStart.iY) |
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128 offsetrect.Move(TPoint(0,(rsize.iHeight>>1)+4)); |
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129 else |
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130 offsetrect.Move(TPoint(0,-(rsize.iHeight>>1)-4)); |
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131 TPoint intersect,point; |
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132 TLinearDDA line; |
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133 iLine.JumpToRect(rect); |
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134 iLine.SingleStep(intersect); |
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135 line.Construct(iStart,iFinish); |
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136 while(!line.SingleStep(point)) |
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137 if(point==intersect) |
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138 break; |
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139 iTest->TEST(point==intersect); |
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140 while(!iLine.SingleStep(intersect)) |
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141 { |
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142 line.SingleStep(point); |
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143 iTest->TEST(point==intersect); |
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144 } |
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145 line.SingleStep(point); |
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146 iTest->TEST(point==intersect); |
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147 iTest->TEST(intersect==iFinish); |
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148 iLine.Construct(iStart,iFinish); |
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149 iLine.JumpToRect(largerect); |
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150 iLine.SingleStep(point); |
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151 iTest->TEST(Abs(point.iX-iStart.iX)<=1); |
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152 iTest->TEST(Abs(point.iY-iStart.iY)<=1); |
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153 iLine.Construct(iStart,iFinish); |
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154 iLine.JumpToRect(offsetrect); |
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155 iLine.SingleStep(point); |
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156 if(rsize.iWidth>rsize.iHeight) |
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157 iTest->TEST(point==iStart); |
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158 else |
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159 iTest->TEST(Min(Abs(point.iY-offsetrect.iTl.iY),Abs(point.iY-offsetrect.iBr.iY))==1); |
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160 } |
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161 |
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162 /** |
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163 TestLine::TestJumpToXCoord |
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164 |
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165 Test the JumpToXCoord functionailty, confirming the positions by SingleStep calls |
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166 */ |
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167 void TestLine::TestJumpToXCoord() |
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168 { |
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169 TInt xc1=(iStart.iX+iFinish.iX)>>1; |
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170 TInt xc2=iStart.iX; |
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171 TInt xc3=iFinish.iX; |
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172 TInt xc4=Min(iStart.iX,iFinish.iX)-Abs(xc1); |
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173 TInt xc5=Max(iStart.iX,iFinish.iX)+Abs(xc1); |
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174 TInt y=0; |
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175 TPoint intersect,point; |
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176 TLinearDDA line; |
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177 iLine.JumpToXCoord(xc1,y); |
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178 line.Construct(iStart,iFinish); |
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179 while(!line.SingleStep(point)) |
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180 if(point.iX==xc1) |
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181 break; |
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182 iTest->TEST(y==point.iY); |
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183 while(!iLine.SingleStep(point)) |
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184 { |
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185 line.SingleStep(intersect); |
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186 iTest->TEST(point.iX==intersect.iX); |
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187 iTest->TEST(point.iY==intersect.iY); |
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188 } |
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189 TBool done=line.SingleStep(intersect); |
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190 iTest->TEST(done); |
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191 iLine.Construct(iStart,iFinish); |
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192 iLine.JumpToXCoord(xc2,y); |
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193 iTest->TEST(y==iStart.iY); |
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194 iLine.Construct(iStart,iFinish); |
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195 iLine.JumpToXCoord(xc3,y); |
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196 iLine.SingleStep(point); |
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197 iTest->TEST(point.iX==xc3); |
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198 iLine.Construct(iStart,iFinish); |
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199 iLine.JumpToXCoord(xc4,y); |
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200 iLine.Construct(iStart,iFinish); |
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201 iLine.JumpToXCoord(xc5,y); |
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202 } |
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203 |
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204 /** |
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205 TestLine::TestJumpToYCoord |
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206 |
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207 Test the JumpToYCoord functionailty, confirming the positions by SingleStep calls |
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208 */ |
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209 void TestLine::TestJumpToYCoord() |
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210 { |
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211 TInt yc1=(iStart.iY+iFinish.iY)>>1; |
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212 TInt yc2=iStart.iY; |
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213 TInt yc3=iFinish.iY; |
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214 TInt yc4=Min(iStart.iY,iFinish.iY)-Abs(yc1); |
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215 TInt yc5=Max(iStart.iY,iFinish.iY)+Abs(yc1); |
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216 TInt x=0; |
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217 TPoint intersect,point; |
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218 TLinearDDA line; |
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219 iLine.JumpToYCoord(x,yc1); |
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220 line.Construct(iStart,iFinish); |
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221 while(!line.SingleStep(point)) |
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222 if(point.iY==yc1) |
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223 break; |
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224 iTest->TEST(TPoint(x,yc1)==point); |
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225 while(!iLine.SingleStep(point)) |
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226 { |
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227 line.SingleStep(intersect); |
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228 iTest->TEST(point==intersect); |
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229 } |
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230 TBool done=line.SingleStep(intersect); |
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231 iTest->TEST(done); |
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232 iLine.Construct(iStart,iFinish); |
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233 iLine.JumpToYCoord(x,yc2); |
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234 iTest->TEST(x==iStart.iX); |
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235 iLine.Construct(iStart,iFinish); |
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236 iLine.JumpToYCoord(x,yc3); |
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237 iLine.SingleStep(point); |
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238 iTest->TEST(point.iY==yc3); |
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239 iLine.Construct(iStart,iFinish); |
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240 iLine.JumpToYCoord(x,yc4); |
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241 iLine.Construct(iStart,iFinish); |
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242 iLine.JumpToYCoord(x,yc5); |
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243 } |
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244 |