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1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 #include "hgtransformedquad.h" |
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19 #include "hgquad.h" |
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20 #include "trace.h" |
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21 #include <qvector2d> |
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22 #include <qpolygon> |
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23 #include <qmatrix4x4> |
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24 #include <qpainter> |
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25 |
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26 HgTransformedQuad::HgTransformedQuad(qreal yDir) : mYDir(yDir) |
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27 { |
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28 |
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29 } |
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30 |
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31 HgTransformedQuad::~HgTransformedQuad() |
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32 { |
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33 |
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34 } |
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35 |
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36 int HgTransformedQuad::index() const |
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37 { |
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38 return mIndex; |
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39 } |
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40 |
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41 bool HgTransformedQuad::isPointInside(const QPointF& point) const |
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42 { |
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43 QPolygonF poly; |
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44 getTransformedPoints(poly); |
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45 QRectF rect = poly.boundingRect(); |
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46 if (rect.contains(point)) |
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47 { |
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48 return true; |
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49 } |
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50 return false; |
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51 } |
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52 |
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53 void HgTransformedQuad::transformQuad(int index, const QMatrix4x4& projView, HgQuad* quad, |
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54 qreal mirroringPlaneY, const QVector2D& translate, const QPointF& center, |
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55 const QSizeF& windowSize) |
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56 { |
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57 mIndex = index; |
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58 mQuad = quad; |
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59 |
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60 QMatrix4x4 tm; |
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61 tm.setToIdentity(); |
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62 tm.rotate(quad->outerRotation()); |
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63 |
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64 if (mQuad->mirrorImageEnabled()) |
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65 { |
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66 computeMirroredPoints(tm, projView, mirroringPlaneY, translate, center, windowSize); |
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67 } |
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68 |
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69 tm.translate(quad->position()); |
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70 tm.rotate(quad->rotation()); |
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71 tm.scale(quad->scale().x(), quad->scale().y()); |
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72 |
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73 tm = projView * tm; |
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74 |
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75 perspectiveTransformPoints(mTransformedPoints, tm, center, windowSize); |
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76 |
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77 for (int i = 0; i < 4; i++) |
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78 mTransformedPoints[i] += translate; |
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79 |
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80 } |
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81 |
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82 void HgTransformedQuad::getTransformedPoints(QPolygonF& poly) const |
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83 { |
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84 poly.clear(); |
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85 poly.append(mTransformedPoints[0].toPointF()); |
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86 poly.append(mTransformedPoints[1].toPointF()); |
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87 poly.append(mTransformedPoints[2].toPointF()); |
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88 poly.append(mTransformedPoints[3].toPointF()); |
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89 } |
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90 |
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91 bool HgTransformedQuad::quadSorter(HgTransformedQuad* a, HgTransformedQuad* b) |
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92 { |
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93 return a->mQuad->position().z() < b->mQuad->position().z(); |
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94 } |
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95 |
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96 HgQuad* HgTransformedQuad::quad() const |
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97 { |
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98 return mQuad; |
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99 } |
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100 |
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101 void HgTransformedQuad::computeMirroredPoints(const QMatrix4x4& trans, const QMatrix4x4& projView, |
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102 qreal mirroringPlaneY, const QVector2D& translate, const QPointF& center, |
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103 const QSizeF& windowSize) |
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104 { |
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105 HgQuad* quad = mQuad; |
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106 |
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107 QMatrix4x4 mirror = trans; |
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108 |
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109 qreal distToPlane = qAbs(quad->position().y() - mirroringPlaneY); |
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110 |
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111 mirror.translate(quad->position().x(), mirroringPlaneY - distToPlane/1, quad->position().z()); |
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112 mirror.scale(quad->scale().x(), -quad->scale().y()/1); |
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113 mirror.rotate(quad->rotation()); |
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114 |
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115 QMatrix4x4 modelViewProjMatrix = projView * mirror; |
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116 |
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117 perspectiveTransformPoints(mMirroredPoints, modelViewProjMatrix, center, windowSize); |
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118 |
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119 for (int i = 0; i < 4; i++) |
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120 mMirroredPoints[i] += translate; |
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121 |
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122 } |
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123 |
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124 void HgTransformedQuad::perspectiveTransformPoints(QVector2D* outPoints, const QMatrix4x4& matrix, |
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125 const QPointF& center, const QSizeF& windowSize) |
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126 { |
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127 const QVector4D points[] = |
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128 { |
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129 QVector4D(-0.5f, -0.5f, 0.0f, 1.0f), |
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130 QVector4D( 0.5f, -0.5f, 0.0f, 1.0f), |
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131 QVector4D( 0.5f, 0.5f, 0.0f, 1.0f), |
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132 QVector4D(-0.5f, 0.5f, 0.0f, 1.0f) |
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133 }; |
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134 |
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135 qreal hw = windowSize.width() * 0.5f; |
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136 qreal hh = windowSize.height() * 0.5f; |
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137 |
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138 for (int i = 0; i < 4; i++) |
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139 { |
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140 QVector4D temp = matrix * points[i]; |
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141 |
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142 outPoints[i] = QVector2D( |
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143 center.x() + temp.x() / temp.w() * hw, |
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144 center.y() + (temp.y() / temp.w() * hh) * mYDir); |
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145 |
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146 } |
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147 |
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148 } |
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149 |