#include "gla.h"Go to the source code of this file.
Classes | |
| class | OffscreenAttrValue |
Functions | |
| FIXED16 | GetCurrentViewScale () |
| MILLIPOINT | ConvertMeasurementToMillipointsAtCurrentViewScale (INT32 Width, UnitType type) |
| UINT32 | ConvertMillipointsToPixelsAtCurrentViewScale (MILLIPOINT mp) |
| INT32 | PixelsPerMeterAtCurrentViewScale () |
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Definition at line 140 of file offattr.cpp. 00141 { 00142 const double dpi = (double)GRenderRegion::GetDefaultDPI(); 00143 const double MillipointsPerPixel = (dpi <= 0) ? 750.0 : MILLIPOINTS_PER_INCH / dpi; 00144 00145 double ScaledWidth = 0; 00146 00147 switch(type) 00148 { 00149 case MILLIPOINTS: 00150 ScaledWidth = Width; 00151 break; 00152 00153 case PIXELS: 00154 ScaledWidth = MillipointsPerPixel * Width; 00155 ScaledWidth /= GetCurrentViewScale().MakeDouble(); 00156 break; 00157 00158 // unsupported unit type. 00159 default: 00160 ScaledWidth = -1; 00161 break; 00162 } 00163 00164 return (MILLIPOINT)ScaledWidth; 00165 }
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Definition at line 167 of file offattr.cpp. 00168 { 00169 const double dpi = (double)GRenderRegion::GetDefaultDPI(); 00170 const double MillipointsPerPixel = (dpi <= 0) ? 750.0 : MILLIPOINTS_PER_INCH / dpi; 00171 00172 // NB this routine rounds to the nearest pixel, so if you convert 00173 // from mp to pixels and back again, you are highly unlikely 00174 // to get the value you started off with! 00175 double Pixels = (mp / MillipointsPerPixel); 00176 Pixels *= GetCurrentViewScale().MakeDouble(); 00177 00178 return (UINT32)(Pixels + 0.5); 00179 }
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Definition at line 131 of file offattr.cpp. 00132 { 00133 View* pView = View::GetCurrent(); 00134 if (pView == NULL) 00135 return FIXED16(0); 00136 00137 return pView->GetViewScale(); 00138 }
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Definition at line 181 of file offattr.cpp. 00182 { 00183 // NB return value is given to the nearest pixel. 00184 double ppm = PIXELS_PER_INCH * INCHES_PER_METRE; 00185 ppm *= GetCurrentViewScale().MakeDouble(); 00186 return (INT32)(ppm + 0.5); 00187 }
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1.4.4