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/*
* MapViewModel.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#include "StdInc.h"
#include "MapViewModel.h"
#include "../../lib/int3.h"
void MapViewModel::setTileSize(const Point & newValue)
{
tileSize = newValue;
}
void MapViewModel::setViewCenter(const Point & newValue)
{
viewCenter = newValue;
}
void MapViewModel::setViewDimensions(const Point & newValue)
{
viewDimensions = newValue;
}
void MapViewModel::setLevel(int newLevel)
{
mapLevel = newLevel;
}
Point MapViewModel::getSingleTileSizeUpperLimit() const
{
// arbitrary-seleted upscaling limit
return Point(256, 256);
}
Point MapViewModel::getSingleTileSizeLowerLimit() const
{
// arbitrary-seleted downscaling limit
return Point(4, 4);
}
Point MapViewModel::getSingleTileSize() const
{
return tileSize;
}
Point MapViewModel::getMapViewCenter() const
{
return viewCenter;
}
Point MapViewModel::getPixelsVisibleDimensions() const
{
return viewDimensions;
}
int MapViewModel::getLevel() const
{
return mapLevel;
}
Point MapViewModel::getTilesVisibleDimensions() const
{
// total number of potentially visible tiles is:
// 1) number of completely visible tiles
// 2) additional tile that might be partially visible from left/top size
// 3) additional tile that might be partially visible from right/bottom size
return {
getPixelsVisibleDimensions().x / getSingleTileSize().x + 2,
getPixelsVisibleDimensions().y / getSingleTileSize().y + 2,
};
}
Rect MapViewModel::getTilesTotalRect() const
{
return Rect(
Point(getTileAtPoint(Point(0,0))),
getTilesVisibleDimensions()
);
}
int3 MapViewModel::getTileAtPoint(const Point & position) const
{
Point topLeftOffset = getMapViewCenter() - getPixelsVisibleDimensions() / 2;
Point absolutePosition = position + topLeftOffset;
// NOTE: using division via double in order to use std::floor
// which rounds to negative infinity and not towards zero (like integer division)
return {
static_cast<int>(std::floor(static_cast<double>(absolutePosition.x) / getSingleTileSize().x)),
static_cast<int>(std::floor(static_cast<double>(absolutePosition.y) / getSingleTileSize().y)),
getLevel()
};
}
Point MapViewModel::getCacheDimensionsPixels() const
{
return getPixelsVisibleDimensions() + getSingleTileSizeUpperLimit() * 2;
}
Rect MapViewModel::getCacheTileArea(const int3 & coordinates) const
{
assert(mapLevel == coordinates.z);
assert(getTilesVisibleDimensions().x + coordinates.x >= 0);
assert(getTilesVisibleDimensions().y + coordinates.y >= 0);
Point tileIndex{
(getTilesVisibleDimensions().x + coordinates.x) % getTilesVisibleDimensions().x,
(getTilesVisibleDimensions().y + coordinates.y) % getTilesVisibleDimensions().y
};
return Rect(tileIndex * getSingleTileSize(), getSingleTileSize());
}
Rect MapViewModel::getTargetTileArea(const int3 & coordinates) const
{
Point topLeftOffset = getMapViewCenter() - getPixelsVisibleDimensions() / 2;
Point tilePosAbsolute = Point(coordinates) * getSingleTileSize();
Point tilePosRelative = tilePosAbsolute - topLeftOffset;
return Rect(tilePosRelative, getSingleTileSize());
}
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