/*******************************************************************************
* This file is part of RedReader.
*
* RedReader 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.
*
* RedReader 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 RedReader. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package org.quantumbadger.redreader.views.glview.displaylist;
import org.quantumbadger.redreader.views.glview.program.RRGLMatrixStack;
public abstract class RRGLRenderable {
private boolean mVisible = true;
private int mAttachmentCount = 0;
public final void hide() {
mVisible = false;
}
public final void show() {
mVisible = true;
}
public final boolean isVisible() {
return mVisible;
}
public final void startRender(final RRGLMatrixStack stack, final long time) {
if(mVisible) renderInternal(stack, time);
}
public void onAdded() {
mAttachmentCount++;
}
public boolean isAdded() {
return mAttachmentCount > 0;
}
protected abstract void renderInternal(RRGLMatrixStack stack, final long time);
public void onRemoved() {
mAttachmentCount--;
}
public boolean isAnimating() {
return false;
}
public void setOverallAlpha(float alpha) {
throw new UnsupportedOperationException();
}
}