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ScaleMode.java
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ScaleMode.java
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/*
* Copyright 2013 MovingBlocks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terasology.rendering.nui;
import org.terasology.math.Rect2i;
import javax.vecmath.Vector2f;
/**
* @author Immortius
*/
public enum ScaleMode {
/**
* Stretches to fill the given space
*/
STRETCH {
@Override
public Vector2f scaleForRegion(Rect2i region, int actualWidth, int actualHeight) {
return new Vector2f(region.width(), region.height());
}
},
/**
* Scales to fill the given space. Parts of the image will be cut off if it is a different shape to the space.
*/
SCALE_FILL {
@Override
public Vector2f scaleForRegion(Rect2i region, int actualWidth, int actualHeight) {
Vector2f scale = new Vector2f();
float aspect = ((float) actualWidth) / actualHeight;
if (aspect > 0) {
scale.x = (float) Math.ceil(region.height() * aspect);
scale.y = region.height();
} else {
scale.x = region.width();
scale.y = (float) Math.ceil(region.width() / aspect);
}
return scale;
}
},
/**
* Scales to fit in the given space. There will be gaps if the image is a different shape to the space.
*/
SCALE_FIT {
@Override
public Vector2f scaleForRegion(Rect2i region, int actualWidth, int actualHeight) {
Vector2f scale = new Vector2f();
float aspect = ((float) actualWidth) / actualHeight;
if (aspect > 0) {
scale.x = region.width();
scale.y = (float) Math.ceil(region.width() / aspect);
} else {
scale.x = (float) Math.ceil(region.height() * aspect);
scale.y = region.height();
}
return scale;
}
};
public abstract Vector2f scaleForRegion(Rect2i region, int actualWidth, int actualHeight);
}