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Location: cpp/openttd-patchpack/source/src/zoom_func.h - annotation
r10737:2346af7e04e8
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(svn r15070) -Update: WebTranslator2 update to 2009-01-13 18:42:22
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croatian - 24 fixed by tifached (24)
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dutch - 2 fixed by Excel20 (2)
finnish - 7 fixed, 1 changed by UltimateSephiroth (8)
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brazilian_portuguese - 16 fixed by tucalipe (16)
catalan - 8 fixed by arnaullv (8)
croatian - 24 fixed by tifached (24)
czech - 8 fixed by Hadez (8)
dutch - 2 fixed by Excel20 (2)
finnish - 7 fixed, 1 changed by UltimateSephiroth (8)
hungarian - 7 fixed, 2 changed by IPG (2), alyr (7)
indonesian - 23 fixed, 2 changed by fanioz (25)
italian - 7 fixed, 1 changed by lorenzodv (8)
japanese - 59 fixed by ickoonite (59)
polish - 3 fixed by xaxa (3)
romanian - 23 fixed, 1 changed by kkmic (24)
slovak - 59 fixed by James (59)
spanish - 58 fixed by Dominus (30), eusebio (28)
turkish - 7 fixed, 1 changed by Emin (8)
r8123:dde0a9a84019 r8123:dde0a9a84019 r9111:983de9c5a848 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 r8123:dde0a9a84019 | /* $Id$ */
/** @file zoom_func.h Functions related to zooming. */
#ifndef ZOOM_FUNC_H
#define ZOOM_FUNC_H
#include "zoom_type.h"
extern ZoomLevel _saved_scrollpos_zoom;
/**
* Scale by zoom level, usually shift left (when zoom > ZOOM_LVL_NORMAL)
* When shifting right, value is rounded up
* @param value value to shift
* @param zoom zoom level to shift to
* @return shifted value
*/
static inline int ScaleByZoom(int value, ZoomLevel zoom)
{
if (zoom == ZOOM_LVL_NORMAL) return value;
int izoom = zoom - ZOOM_LVL_NORMAL;
return (zoom > ZOOM_LVL_NORMAL) ? value << izoom : (value + (1 << -izoom) - 1) >> -izoom;
}
/**
* Scale by zoom level, usually shift right (when zoom > ZOOM_LVL_NORMAL)
* When shifting right, value is rounded up
* @param value value to shift
* @param zoom zoom level to shift to
* @return shifted value
*/
static inline int UnScaleByZoom(int value, ZoomLevel zoom)
{
if (zoom == ZOOM_LVL_NORMAL) return value;
int izoom = zoom - ZOOM_LVL_NORMAL;
return (zoom > ZOOM_LVL_NORMAL) ? (value + (1 << izoom) - 1) >> izoom : value << -izoom;
}
/**
* Scale by zoom level, usually shift left (when zoom > ZOOM_LVL_NORMAL)
* @param value value to shift
* @param zoom zoom level to shift to
* @return shifted value
*/
static inline int ScaleByZoomLower(int value, ZoomLevel zoom)
{
if (zoom == ZOOM_LVL_NORMAL) return value;
int izoom = zoom - ZOOM_LVL_NORMAL;
return (zoom > ZOOM_LVL_NORMAL) ? value << izoom : value >> -izoom;
}
/**
* Scale by zoom level, usually shift right (when zoom > ZOOM_LVL_NORMAL)
* @param value value to shift
* @param zoom zoom level to shift to
* @return shifted value
*/
static inline int UnScaleByZoomLower(int value, ZoomLevel zoom)
{
if (zoom == ZOOM_LVL_NORMAL) return value;
int izoom = zoom - ZOOM_LVL_NORMAL;
return (zoom > ZOOM_LVL_NORMAL) ? value >> izoom : value << -izoom;
}
#endif /* ZOOM_FUNC_H */
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