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1 // Copyright (c) 2010 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 // Implementation of OpenVGU stub functions |
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15 |
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16 #include "vghwutils.h" |
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17 |
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18 #define __VG_OPENVG_H_ |
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19 #include <VG/1.1/openvg.h> |
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20 |
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21 #include "openvgrfc.h" |
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22 |
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23 class RemoteFunctionCall; |
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24 |
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25 // tracing |
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26 #ifdef _DEBUG |
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27 #include <e32debug.h> |
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28 #define OPENVGU_TRACE(fmt, args...) RDebug::Printf(fmt, ##args) |
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29 #else |
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30 #define OPENVGU_TRACE(fmt, args...) |
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31 #endif |
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32 |
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33 |
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34 extern "C" { |
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35 /* |
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36 Note: Comments at the start of each Open VG api are adapted from the Open VG 1.1 specification. |
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37 The text has been chosen/adapted to give a helpful overview of the function, and the errors |
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38 that it may generate. For more details and diagrams see the full Open VG specification. |
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39 */ |
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40 |
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41 |
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42 /* |
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43 Append a line segment to a path. |
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44 |
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45 ERRORS |
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46 VGU_BAD_HANDLE_ERROR |
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47 – if path is not a valid path handle, or is not shared with the current context |
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48 VGU_PATH_CAPABILITY_ERROR |
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49 – if VG_PATH_CAPABILITY_APPEND_TO is not enabled for path |
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50 */ |
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51 EXPORT_C VGUErrorCode |
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52 vguLine(VGPath path, |
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53 VGfloat x0, VGfloat y0, |
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54 VGfloat x1, VGfloat y1) |
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55 { |
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56 OPENVGU_TRACE("vguLine path=%d x0=0x%x, y0=0x%x, x1=0x%x, y1=0x%x", path, x0, y0, x1, y1); |
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57 |
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58 MVgContext* vgContext = CVghwUtils::VgContext(); |
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59 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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60 if (vgContext) |
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61 { |
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62 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData(rfcdata); |
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63 vguApiData.Init(OpenVgRFC::EvguLine); |
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64 vguApiData.AppendParam(path); |
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65 vguApiData.AppendParam(x0); |
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66 vguApiData.AppendParam(y0); |
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67 vguApiData.AppendParam(x1); |
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68 vguApiData.AppendParam(y1); |
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69 // TODO return type specific functions for VGU operations |
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70 vgContext->ExecuteVgCommand(vguApiData); |
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71 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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72 } |
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73 return error; |
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74 } |
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75 |
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76 /* |
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77 Append a polyline (connected sequence of line segments) or polygon to a path. |
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78 |
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79 ERRORS |
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80 VGU_BAD_HANDLE_ERROR |
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81 – if path is not a valid path handle, or is not shared with the current context |
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82 VGU_PATH_CAPABILITY_ERROR |
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83 – if VG_PATH_CAPABILITY_APPEND_TO is not enabled for path |
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84 VGU_ILLEGAL_ARGUMENT_ERROR |
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85 – if points is NULL |
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86 – if points is not properly aligned |
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87 – if count is less than or equal to 0 |
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88 */ |
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89 EXPORT_C VGUErrorCode |
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90 vguPolygon(VGPath path, |
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91 const VGfloat * points, |
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92 VGint count, |
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93 VGboolean closed) |
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94 { |
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95 OPENVGU_TRACE("vguPolygon path=%d, points=0x%x, count=%d, closed=%d", path, points, count, closed); |
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96 |
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97 MVgContext* vgContext = CVghwUtils::VgContext(); |
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98 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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99 if (vgContext) |
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100 { |
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101 if ( (points == NULL) || (count <= 0) || (3ul & (unsigned)points) ) |
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102 { |
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103 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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104 } |
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105 else |
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106 { |
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107 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData(rfcdata); |
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108 vguApiData.Init(OpenVgRFC::EvguPolygon); |
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109 vguApiData.AppendParam(path); |
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110 vguApiData.AppendParam(count); |
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111 vguApiData.AppendParam(closed); |
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112 vguApiData.AppendVector(points, count * 2); |
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113 |
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114 vgContext->ExecuteVgCommand(vguApiData); |
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115 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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116 } |
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117 } |
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118 return error; |
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119 } |
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120 |
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121 /* |
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122 Append an axis-aligned rectangle with its lower-left corner at (x, y) and |
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123 a given width and height to a path. |
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124 |
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125 ERRORS |
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126 VGU_BAD_HANDLE_ERROR |
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127 – if path is not a valid path handle, or is not shared with the current context |
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128 VGU_PATH_CAPABILITY_ERROR |
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129 – if VG_PATH_CAPABILITY_APPEND_TO is not enabled for path |
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130 VGU_ILLEGAL_ARGUMENT_ERROR |
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131 – if width or height are less than or equal to 0 |
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132 */ |
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133 EXPORT_C VGUErrorCode |
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134 vguRect(VGPath path, |
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135 VGfloat x, VGfloat y, |
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136 VGfloat width, VGfloat height) |
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137 { |
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138 OPENVGU_TRACE("vguRect path=%d, x=0x%x, y=0x%x, width=0x%x, height=0x%x", path, x, y, width, height); |
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139 |
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140 MVgContext* vgContext = CVghwUtils::VgContext(); |
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141 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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142 if (vgContext) |
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143 { |
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144 if ( (width <= 0) || (height <= 0) ) |
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145 { |
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146 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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147 } |
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148 else |
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149 { |
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150 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData(rfcdata); |
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151 vguApiData.Init(OpenVgRFC::EvguRect); |
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152 vguApiData.AppendParam(path); |
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153 vguApiData.AppendParam(x); |
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154 vguApiData.AppendParam(y); |
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155 vguApiData.AppendParam(width); |
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156 vguApiData.AppendParam(height); |
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157 |
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158 vgContext->ExecuteVgCommand(vguApiData); |
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159 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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160 } |
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161 } |
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162 return error; |
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163 } |
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164 |
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165 /* |
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166 Append an axis-aligned round-cornered rectangle with the lower-left corner of |
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167 its rectangular bounding box at (x, y) and a given width, height, arcWidth, |
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168 and arcHeight to a path. |
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169 |
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170 ERRORS |
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171 VGU_BAD_HANDLE_ERROR |
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172 – if path is not a valid path handle, or is not shared with the current context |
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173 VGU_PATH_CAPABILITY_ERROR |
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174 – if VG_PATH_CAPABILITY_APPEND_TO is not enabled for path |
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175 VGU_ILLEGAL_ARGUMENT_ERROR |
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176 – if width or height is less than or equal to 0 |
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177 */ |
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178 EXPORT_C VGUErrorCode |
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179 vguRoundRect(VGPath path, |
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180 VGfloat x, VGfloat y, |
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181 VGfloat width, |
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182 VGfloat height, |
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183 VGfloat arcWidth, |
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184 VGfloat arcHeight) |
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185 { |
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186 OPENVGU_TRACE("vguRoundRect path=%d, x=0x%x, y=0x%x, width=0x%x, height=0x%x, arcWidth=0x%x, arcHeight=0x%x", |
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187 path, x, y, width, height, arcWidth, arcHeight); |
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188 |
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189 MVgContext* vgContext = CVghwUtils::VgContext(); |
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190 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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191 if (vgContext) |
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192 { |
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193 if ( (width <= 0) || (height <= 0) ) |
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194 { |
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195 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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196 } |
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197 else |
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198 { |
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199 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData(rfcdata); |
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200 vguApiData.Init(OpenVgRFC::EvguRoundRect); |
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201 vguApiData.AppendParam(path); |
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202 vguApiData.AppendParam(x); |
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203 vguApiData.AppendParam(y); |
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204 vguApiData.AppendParam(width); |
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205 vguApiData.AppendParam(height); |
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206 vguApiData.AppendParam(arcWidth); |
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207 vguApiData.AppendParam(arcHeight); |
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208 |
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209 vgContext->ExecuteVgCommand(vguApiData); |
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210 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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211 } |
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212 } |
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213 return error; |
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214 } |
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215 |
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216 /* |
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217 Append an axis-aligned ellipse to a path. The center of the ellipse is given by |
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218 (cx, cy) and the dimensions of the axis-aligned rectangle enclosing the ellipse are |
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219 given by width and height. The ellipse begins at (cx + width/2, cy) and is stroked |
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220 as two equal counter-clockwise arcs. |
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221 |
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222 ERRORS |
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223 VGU_BAD_HANDLE_ERROR |
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224 – if path is not a valid path handle, or is not shared with the current context |
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225 VGU_PATH_CAPABILITY_ERROR |
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226 – if VG_PATH_CAPABILITY_APPEND_TO is not enabled for path |
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227 VGU_ILLEGAL_ARGUMENT_ERROR |
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228 – if width or height is less than or equal to 0 |
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229 */ |
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230 EXPORT_C VGUErrorCode |
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231 vguEllipse(VGPath path, |
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232 VGfloat cx, VGfloat cy, |
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233 VGfloat width, |
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234 VGfloat height) |
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235 { |
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236 OPENVGU_TRACE("vguEllipse path=%d, cx=0x%x, cy=0x%x, width=0x%x, height=0x%x", path, cx, cy, width, height); |
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237 |
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238 MVgContext* vgContext = CVghwUtils::VgContext(); |
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239 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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240 if (vgContext) |
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241 { |
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242 if ( (width <= 0) || (height <= 0) ) |
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243 { |
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244 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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245 } |
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246 else |
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247 { |
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248 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData(rfcdata); |
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249 vguApiData.Init(OpenVgRFC::EvguEllipse); |
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250 vguApiData.AppendParam(path); |
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251 vguApiData.AppendParam(cx); |
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252 vguApiData.AppendParam(cy); |
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253 vguApiData.AppendParam(width); |
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254 vguApiData.AppendParam(height); |
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255 |
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256 vgContext->ExecuteVgCommand(vguApiData); |
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257 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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258 } |
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259 } |
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260 return error; |
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261 } |
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262 |
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263 /* |
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264 Append an elliptical arc to a path, possibly along with one or two line segments, |
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265 according to the arcType parameter. The startAngle and angleExtent parameters are |
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266 given in degrees, proceeding counter-clockwise from the positive X axis. The arc |
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267 is defined on the unit circle, then scaled by the width and height of the ellipse. |
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268 |
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269 ERRORS |
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270 VGU_BAD_HANDLE_ERROR |
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271 – if path is not a valid path handle, or is not shared with the current context |
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272 VGU_PATH_CAPABILITY_ERROR |
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273 – if VG_PATH_CAPABILITY_APPEND_TO is not enabled for path |
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274 VGU_ILLEGAL_ARGUMENT_ERROR |
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275 – if width or height is less than or equal to 0 |
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276 – if arcType is not one of the values from the VGUArcType enumeration |
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277 */ |
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278 EXPORT_C VGUErrorCode |
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279 vguArc(VGPath path, |
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280 VGfloat x, VGfloat y, |
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281 VGfloat width, VGfloat height, |
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282 VGfloat startAngle, |
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283 VGfloat angleExtent, |
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284 VGUArcType arcType) |
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285 { |
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286 OPENVGU_TRACE("vguArc path=%d, x=0x%x, y=0x%x, width=0x%x, height=0x%x, startAngle=0x%x, angleExtent=0x%x, arcType=%d", |
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287 path, x, y, width, height, startAngle, angleExtent, arcType); |
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288 |
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289 MVgContext* vgContext = CVghwUtils::VgContext(); |
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290 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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291 if (vgContext) |
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292 { |
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293 const unsigned int n_posinf = 0x7f800000u; |
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294 const unsigned int n_neginf = 0xff800000u; |
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295 VGfloat posinf = *(VGfloat*)&n_posinf; |
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296 VGfloat neginf = *(VGfloat*)&n_neginf; |
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297 |
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298 if ( (width <= 0) || (height <= 0) || ( (arcType != VGU_ARC_OPEN) && (arcType == VGU_ARC_CHORD) && (arcType == VGU_ARC_PIE) ) ) |
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299 { |
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300 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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301 } |
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302 // Tony TODO review NaN detection; not convinced that this works |
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303 else if ( ((x + x - x) != x) || ((y + y - y) != y) ) /* NaN's */ |
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304 { |
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305 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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306 } |
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307 else if ( ((startAngle + startAngle - startAngle) != startAngle) || ((angleExtent + angleExtent - angleExtent) != angleExtent) ) |
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308 { |
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309 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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310 } |
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311 else if ( (startAngle <= neginf) || (startAngle >= posinf) ) |
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312 { |
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313 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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314 } |
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315 else if ( (angleExtent <= neginf) || (angleExtent >= posinf) ) |
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316 { |
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317 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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318 } |
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319 else if ( (x <= neginf) || (x >= posinf) ) /*Infinity x */ |
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320 { |
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321 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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322 } |
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323 else if ( (y <= neginf) || (y >= posinf) ) /*Infinity x */ |
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324 { |
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325 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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326 } |
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327 else |
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328 { |
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329 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData(rfcdata); |
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330 vguApiData.Init(OpenVgRFC::EvguArc); |
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331 vguApiData.AppendParam(path); |
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332 vguApiData.AppendParam(x); |
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333 vguApiData.AppendParam(y); |
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334 vguApiData.AppendParam(width); |
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335 vguApiData.AppendParam(height); |
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336 vguApiData.AppendParam(startAngle); |
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337 vguApiData.AppendParam(angleExtent); |
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338 vguApiData.AppendParam(arcType); |
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339 |
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340 vgContext->ExecuteVgCommand(vguApiData); |
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341 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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342 } |
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343 } |
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344 return error; |
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345 } |
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346 |
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347 /* |
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348 Sets the entries of matrix to a projective transformation that maps the point |
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349 (sx0, sy0) to (0, 0); (sx1, sy1) to (1, 0); (sx2, sy2) to (0, 1); and (sx3, sy3) |
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350 to (1, 1). If no non-degenerate matrix satisfies the constraints, |
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351 VGU_BAD_WARP_ERROR is returned and matrix is unchanged. |
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352 |
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353 ERRORS |
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354 VGU_ILLEGAL_ARGUMENT_ERROR |
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355 – if matrix is NULL |
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356 – if matrix is not properly aligned |
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357 VGU_BAD_WARP_ERROR |
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358 – if no non-degenerate transformation satisfies the constraints |
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359 */ |
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360 EXPORT_C VGUErrorCode |
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361 vguComputeWarpQuadToSquare(VGfloat sx0, VGfloat sy0, |
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362 VGfloat sx1, VGfloat sy1, |
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363 VGfloat sx2, VGfloat sy2, |
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364 VGfloat sx3, VGfloat sy3, |
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365 VGfloat * matrix) |
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366 { |
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367 OPENVGU_TRACE("vguComputeWarpQuadToSquare sx0=0x%x, sy0=0x%x, sx1=0x%x, sy1=0x%x, sx2=0x%x, sy2=0x%x, sx3=0x%x, sy3=0x%x, matrix=0x%x", |
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368 sx0, sy0, sx1, sy1, sx2, sy2, sx3, sy3, matrix); |
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369 |
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370 MVgContext* vgContext = CVghwUtils::VgContext(); |
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371 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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372 if (vgContext) |
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373 { |
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374 if ( (matrix == NULL) || (3ul & (unsigned)matrix)) |
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375 { |
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376 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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377 } |
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378 else |
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379 { |
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380 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData( rfcdata ); |
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381 vguApiData.Init(OpenVgRFC::EvguComputeWarpQuadToSquare); |
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382 vguApiData.AppendParam(sx0); |
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383 vguApiData.AppendParam(sy0); |
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384 vguApiData.AppendParam(sx1); |
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385 vguApiData.AppendParam(sy1); |
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386 vguApiData.AppendParam(sx2); |
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387 vguApiData.AppendParam(sy2); |
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388 vguApiData.AppendParam(sx3); |
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389 vguApiData.AppendParam(sy3); |
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390 vguApiData.AppendVector(matrix, 9, RemoteFunctionCallData::EOut); |
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391 |
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392 vgContext->ExecuteVgCommand(vguApiData); |
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393 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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394 } |
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395 } |
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396 return error; |
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397 } |
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398 |
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399 /* |
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400 Sets the entries of matrix to a projective transformation that maps the point |
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401 (0, 0) to (dx0, dy0); (1, 0) to (dx1, dy1); (0, 1) to (dx2, dy2); and (1, 1) to |
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402 (dx3, dy3). If no non-degenerate matrix satisfies the constraints, VGU_BAD_WARP_ERROR |
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403 is returned and matrix is unchanged. |
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404 |
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405 ERRORS |
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406 VGU_ILLEGAL_ARGUMENT_ERROR |
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407 – if matrix is NULL |
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408 – if matrix is not properly aligned |
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409 VGU_BAD_WARP_ERROR |
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410 – if no non-degenerate transformation satisfies the constraints |
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411 */ |
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412 EXPORT_C VGUErrorCode |
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413 vguComputeWarpSquareToQuad(VGfloat dx0, VGfloat dy0, |
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414 VGfloat dx1, VGfloat dy1, |
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415 VGfloat dx2, VGfloat dy2, |
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416 VGfloat dx3, VGfloat dy3, |
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417 VGfloat * matrix) |
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418 { |
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419 OPENVGU_TRACE("vguComputeWarpSquareToQuad dx0=0x%x, dy0=0x%x, dx1=0x%x, dy1=0x%x, dx2=0x%x, dy2=0x%x, dx3=0x%x, dy3=0x%x, matrix=0x%x", |
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420 dx0, dy0, dx1, dy1, dx2, dy2, dx3, dy3, matrix); |
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421 |
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422 MVgContext* vgContext = CVghwUtils::VgContext(); |
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423 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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424 if (vgContext) |
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425 { |
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426 if ( (matrix == NULL) || (3ul & (unsigned)matrix)) |
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427 { |
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428 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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429 } |
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430 else |
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431 { |
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432 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData(rfcdata); |
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433 vguApiData.Init(OpenVgRFC::EvguComputeWarpSquareToQuad); |
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434 vguApiData.AppendParam(dx0); |
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435 vguApiData.AppendParam(dy0); |
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436 vguApiData.AppendParam(dx1); |
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437 vguApiData.AppendParam(dy1); |
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438 vguApiData.AppendParam(dx2); |
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439 vguApiData.AppendParam(dy2); |
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440 vguApiData.AppendParam(dx3); |
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441 vguApiData.AppendParam(dy3); |
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442 vguApiData.AppendVector(matrix, 9, RemoteFunctionCallData::EOut); |
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443 |
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444 vgContext->ExecuteVgCommand(vguApiData); |
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445 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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446 } |
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447 } |
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448 return error; |
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449 } |
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450 |
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451 /* |
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452 Sets the entries of matrix to a projective transformation that maps the point |
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453 (sx0, sy0) to (dx0, dy0); (sx1, sy1) to (dx1, dy1); (sx2, sy2) to (dx2, dy2); |
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454 and (sx3, sy3) to (dx3, dy3). If no non-degenerate matrix satisfies the constraints, |
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455 VGU_BAD_WARP_ERROR is returned and matrix is unchanged. |
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456 |
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457 ERRORS |
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458 VGU_ILLEGAL_ARGUMENT_ERROR |
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459 – if matrix is NULL |
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460 – if matrix is not properly aligned |
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461 VGU_BAD_WARP_ERROR |
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462 – if no non-degenerate transformation satisfies the constraints |
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463 */ |
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464 EXPORT_C VGUErrorCode |
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465 vguComputeWarpQuadToQuad(VGfloat dx0, VGfloat dy0, |
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466 VGfloat dx1, VGfloat dy1, |
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467 VGfloat dx2, VGfloat dy2, |
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468 VGfloat dx3, VGfloat dy3, |
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469 VGfloat sx0, VGfloat sy0, |
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470 VGfloat sx1, VGfloat sy1, |
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471 VGfloat sx2, VGfloat sy2, |
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472 VGfloat sx3, VGfloat sy3, |
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473 VGfloat * matrix) |
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474 { |
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475 OPENVGU_TRACE("vguComputeWarpQuadToQuad"); |
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476 MVgContext* vgContext = CVghwUtils::VgContext(); |
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477 |
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478 VGUErrorCode error = VGU_OUT_OF_MEMORY_ERROR; // nearest VGU has to an Invalid Context error |
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479 if (vgContext) |
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480 { |
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481 if ( (matrix == NULL) || (3ul & (unsigned)matrix)) |
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482 { |
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483 error = VGU_ILLEGAL_ARGUMENT_ERROR; |
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484 } |
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485 else |
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486 { |
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487 RemoteFunctionCallData rfcdata; OpenVgRFC vguApiData(rfcdata); |
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488 vguApiData.Init(OpenVgRFC::EvguComputeWarpQuadToQuad); |
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489 vguApiData.AppendParam(dx0); |
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490 vguApiData.AppendParam(dy0); |
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491 vguApiData.AppendParam(dx1); |
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492 vguApiData.AppendParam(dy1); |
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493 vguApiData.AppendParam(dx2); |
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494 vguApiData.AppendParam(dy2); |
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495 vguApiData.AppendParam(dx3); |
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496 vguApiData.AppendParam(dy3); |
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497 vguApiData.AppendParam(sx0); |
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498 vguApiData.AppendParam(sy0); |
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499 vguApiData.AppendParam(sx1); |
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500 vguApiData.AppendParam(sy1); |
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501 vguApiData.AppendParam(sx2); |
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502 vguApiData.AppendParam(sy2); |
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503 vguApiData.AppendParam(sx3); |
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504 vguApiData.AppendParam(sy3); |
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505 vguApiData.AppendVector(matrix, 9, RemoteFunctionCallData::EOut); |
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506 |
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507 vgContext->ExecuteVgCommand(vguApiData); |
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508 error = (VGUErrorCode)vguApiData.ReturnValue(); |
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509 } |
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510 } |
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511 return error; |
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512 } |
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513 |
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514 } /* extern "C" */ |