/*
* WorldPainter, a graphical and interactive map generator for Minecraft.
* Copyright © 2011-2015 pepsoft.org, The Netherlands
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.pepsoft.worldpainter.painting;
import org.pepsoft.worldpainter.Dimension;
import org.pepsoft.worldpainter.Tile;
import org.pepsoft.worldpainter.layers.Layer;
import static org.pepsoft.worldpainter.Constants.TILE_SIZE_BITS;
import static org.pepsoft.worldpainter.Constants.TILE_SIZE_MASK;
/**
* Paint which paints a nibble sized layer using a brush, with undo and dynamic level supports.
*
* <p><strong>Note:</strong> does <em>not</em> do any event inhibitation management.
*
* <p>Created by pepijn on 15-05-15.
*/
public final class NibbleLayerPaint extends LayerPaint {
public NibbleLayerPaint(Layer layer) {
super(layer);
if (layer.getDataSize() != Layer.DataSize.NIBBLE) {
throw new IllegalArgumentException("Layer " + layer + " not nibble-sized");
}
}
@Override
public void apply(Dimension dimension, int centreX, int centreY, float dynamicLevel) {
if (brush.getRadius() == 0) {
// Special case: if the radius is 0, assume that the user wants to paint complete pixels instead of trying
// to apply the brush
applyPixel(dimension, centreX, centreY);
return;
}
final int effectiveRadius = brush.getEffectiveRadius();
final int x1 = centreX - effectiveRadius, y1 = centreY - effectiveRadius, x2 = centreX + effectiveRadius, y2 = centreY + effectiveRadius;
final int tileX1 = x1 >> TILE_SIZE_BITS, tileY1 = y1 >> TILE_SIZE_BITS, tileX2 = x2 >> TILE_SIZE_BITS, tileY2 = y2 >> TILE_SIZE_BITS;
if ((tileX1 == tileX2) && (tileY1 == tileY2)) {
// The bounding box of the brush is entirely on one tile; optimize by painting directly to the tile
final Tile tile = dimension.getTileForEditing(tileX1, tileY1);
if (tile == null) {
return;
}
final int x1InTile = x1 & TILE_SIZE_MASK, y1InTile = y1 & TILE_SIZE_MASK, x2InTile = x2 & TILE_SIZE_MASK, y2InTile = y2 & TILE_SIZE_MASK;
final int tileXInWorld = tileX1 << TILE_SIZE_BITS, tileYInWorld = tileY1 << TILE_SIZE_BITS;
for (int y = y1InTile; y <= y2InTile; y++) {
for (int x = x1InTile; x <= x2InTile; x++) {
final int currentValue = tile.getLayerValue(layer, x, y);
final float strength = dynamicLevel * getStrength(centreX, centreY, tileXInWorld + x, tileYInWorld + y);
if (strength != 0f) {
int targetValue = 1 + (int) (strength * 14 + 0.5f);
if (targetValue > currentValue) {
tile.setLayerValue(layer, x, y, targetValue);
}
}
}
}
} else {
// The bounding box of the brush straddles more than one tile; paint to the dimension
for (int y = y1; y <= y2; y++) {
for (int x = x1; x <= x2; x++) {
final int currentValue = dimension.getLayerValueAt(layer, x, y);
final float strength = dynamicLevel * getStrength(centreX, centreY, x, y);
if (strength != 0f) {
int targetValue = 1 + (int) (strength * 14 + 0.5f);
if (targetValue > currentValue) {
dimension.setLayerValueAt(layer, x, y, targetValue);
}
}
}
}
}
}
@Override
public void remove(Dimension dimension, int centreX, int centreY, float dynamicLevel) {
if (brush.getRadius() == 0) {
// Special case: if the radius is 0, assume that the user wants to remove complete pixels instead of trying
// to apply the brush
removePixel(dimension, centreX, centreY);
return;
}
final int effectiveRadius = brush.getEffectiveRadius();
final int x1 = centreX - effectiveRadius, y1 = centreY - effectiveRadius, x2 = centreX + effectiveRadius, y2 = centreY + effectiveRadius;
final int tileX1 = x1 >> TILE_SIZE_BITS, tileY1 = y1 >> TILE_SIZE_BITS, tileX2 = x2 >> TILE_SIZE_BITS, tileY2 = y2 >> TILE_SIZE_BITS;
if ((tileX1 == tileX2) && (tileY1 == tileY2)) {
// The bounding box of the brush is entirely on one tile; optimize by painting directly to the tile
final Tile tile = dimension.getTileForEditing(tileX1, tileY1);
if (tile == null) {
return;
}
final int x1InTile = x1 & TILE_SIZE_MASK, y1InTile = y1 & TILE_SIZE_MASK, x2InTile = x2 & TILE_SIZE_MASK, y2InTile = y2 & TILE_SIZE_MASK;
final int tileXInWorld = tileX1 << TILE_SIZE_BITS, tileYInWorld = tileY1 << TILE_SIZE_BITS;
for (int y = y1InTile; y <= y2InTile; y++) {
for (int x = x1InTile; x <= x2InTile; x++) {
final int currentValue = tile.getLayerValue(layer, x, y);
final float strength = dynamicLevel * getFullStrength(centreX, centreY, tileXInWorld + x, tileYInWorld + y);
if (strength != 0f) {
int targetValue = 14 - (int) (strength * 14 + 0.5f);
if (targetValue < currentValue) {
tile.setLayerValue(layer, x, y, targetValue);
}
}
}
}
} else {
// The bounding box of the brush straddles more than one tile; paint to the dimension
for (int y = y1; y <= y2; y++) {
for (int x = x1; x <= x2; x++) {
final int currentValue = dimension.getLayerValueAt(layer, x, y);
final float strength = dynamicLevel * getFullStrength(centreX, centreY, x, y);
if (strength != 0f) {
int targetValue = 14 - (int) (strength * 14 + 0.f);
if (targetValue < currentValue) {
dimension.setLayerValueAt(layer, x, y, targetValue);
}
}
}
}
}
}
@Override
public void applyPixel(Dimension dimension, int x, int y) {
final Tile tile = dimension.getTileForEditing(x >> TILE_SIZE_BITS, y >> TILE_SIZE_BITS);
if (tile != null) {
final int xInTile = x & TILE_SIZE_MASK, yInTile = y & TILE_SIZE_MASK;
final int value = 1 + (int) (brush.getLevel() * 14 + 0.5f);
if (tile.getLayerValue(layer, xInTile, yInTile) < value) {
tile.setLayerValue(layer, xInTile, yInTile, value);
}
}
}
@Override
public void removePixel(Dimension dimension, int x, int y) {
dimension.setLayerValueAt(layer, x, y, 0);
}
}