| /* ==================================================================== |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You 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.apache.poi.xdgf.geom; |
| |
| import java.awt.geom.Point2D; |
| import java.util.ArrayList; |
| |
| import org.apache.poi.xdgf.usermodel.XDGFShape; |
| import org.apache.poi.xdgf.usermodel.section.geometry.SplineKnot; |
| import org.apache.poi.xdgf.usermodel.section.geometry.SplineStart; |
| |
| import com.graphbuilder.curve.ControlPath; |
| import com.graphbuilder.curve.ShapeMultiPath; |
| import com.graphbuilder.curve.ValueVector; |
| import com.graphbuilder.geom.PointFactory; |
| |
| public class SplineCollector { |
| |
| SplineStart _start; |
| ArrayList<SplineKnot> _knots = new ArrayList<SplineKnot>(); |
| |
| public SplineCollector(SplineStart start) { |
| _start = start; |
| } |
| |
| public void addKnot(SplineKnot knot) { |
| if (!knot.getDel()) |
| _knots.add(knot); |
| } |
| |
| public void addToPath(java.awt.geom.Path2D.Double path, XDGFShape parent) { |
| // ok, we have the start, and all knots... do something with this |
| |
| Point2D last = path.getCurrentPoint(); |
| |
| // create a control path and knots |
| ControlPath controlPath = new ControlPath(); |
| ValueVector knots = new ValueVector(_knots.size() + 3); |
| |
| double firstKnot = _start.getB(); |
| double lastKnot = _start.getC(); |
| int degree = _start.getD(); |
| |
| // first/second knot |
| knots.add(firstKnot); |
| knots.add(_start.getA()); |
| |
| // first/second control point |
| controlPath.addPoint(PointFactory.create(last.getX(), last.getY())); |
| controlPath.addPoint(PointFactory.create(_start.getX(), _start.getY())); |
| |
| // middle knots/control points |
| for (SplineKnot knot: _knots) { |
| knots.add(knot.getA()); |
| controlPath.addPoint(PointFactory.create(knot.getX(), knot.getY())); |
| } |
| |
| // last knot |
| knots.add(lastKnot); |
| |
| ShapeMultiPath shape = SplineRenderer.createNurbsSpline(controlPath, knots, null, degree); |
| path.append(shape, true); |
| } |
| } |