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/**
* Copyright 2023 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package jogamp.graph.ui;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import com.jogamp.graph.ui.Container;
import com.jogamp.graph.ui.Scene;
import com.jogamp.graph.ui.Shape;
import com.jogamp.graph.ui.Shape.Visitor1;
import com.jogamp.graph.ui.Shape.Visitor2;
import com.jogamp.opengl.util.PMVMatrix;
/** Generic static {@link Shape} tree traversal tools, utilized by {@link Scene} and {@link Container} implementations. */
public class TreeTool {
/**
* Traverses through the graph up until {@code shape} and apply {@code action} on it.
* @param pmv
* @param shape
* @param action
* @return true to signal operation complete, i.e. {@code shape} found, otherwise false
*/
public static boolean forOne(final List<Shape> shapes, final PMVMatrix pmv, final Shape shape, final Runnable action) {
for(int i=shapes.size()-1; i>=0; i--) {
final Shape s = shapes.get(i);
if( s.equals(shape) ) {
pmv.glPushMatrix();
s.setTransform(pmv);
action.run();
pmv.glPopMatrix();
return true;
} else if( s instanceof Container ) {
final Container c = (Container)s;
if( !c.contains(shape) ) { // fast-path: skip container
continue;
}
pmv.glPushMatrix();
s.setTransform(pmv);
final boolean res = c.forOne(pmv, shape, action);
pmv.glPopMatrix();
if( !res ) { throw new InternalError("Not found "+shape+" in "+c+", but contained"); }
return true;
}
}
return false;
}
/**
* Traverses through the graph and apply {@link Visitor1#visit(Shape)} for each, stop if it returns true.
* @param v
* @return true to signal operation complete and to stop traversal, i.e. {@link Visitor1#visit(Shape)} returned true, otherwise false
*/
public static boolean forAll(final List<Shape> shapes, final Visitor1 v) {
for(int i=shapes.size()-1; i>=0; i--) {
final Shape s = shapes.get(i);
boolean res = v.visit(s);
if( !res && s instanceof Container ) {
final Container c = (Container)s;
res = c.forAll(v);
}
if( res ) {
return true;
}
}
return false;
}
/**
* Traverses through the graph and apply {@link Visitor2#visit(Shape, PMVMatrix)} for each, stop if it returns true.
* @param pmv
* @param v
* @return true to signal operation complete and to stop traversal, i.e. {@link Visitor2#visit(Shape, PMVMatrix)} returned true, otherwise false
*/
public static boolean forAll(final List<Shape> shapes, final PMVMatrix pmv, final Visitor2 v) {
for(int i=shapes.size()-1; i>=0; i--) {
final Shape s = shapes.get(i);
pmv.glPushMatrix();
s.setTransform(pmv);
boolean res = v.visit(s, pmv);
if( !res && s instanceof Container ) {
final Container c = (Container)s;
res = c.forAll(pmv, v);
}
pmv.glPopMatrix();
if( res ) {
return true;
}
}
return false;
}
/**
* Traverses through the graph and apply {@link Visitor#visit(Shape, PMVMatrix)} for each, stop if it returns true.
*
* Each {@link Container} level is sorted using {@code sortComp}
* @param sortComp
* @param pmv
* @param v
* @return true to signal operation complete and to stop traversal, i.e. {@link Visitor2#visit(Shape, PMVMatrix)} returned true, otherwise false
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
public static boolean forSortedAll(final Comparator<Shape> sortComp, final List<Shape> shapes, final PMVMatrix pmv, final Visitor2 v) {
final Object[] shapesS = shapes.toArray();
Arrays.sort(shapesS, (Comparator)sortComp);
for(int i=shapesS.length-1; i>=0; i--) {
final Shape s = (Shape)shapesS[i];
pmv.glPushMatrix();
s.setTransform(pmv);
boolean res = v.visit(s, pmv);
if( !res && s instanceof Container ) {
final Container c = (Container)s;
res = c.forSortedAll(sortComp, pmv, v);
}
pmv.glPopMatrix();
if( res ) {
return true;
}
}
return false;
}
}
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