| /* ==================================================================== |
| 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.usermodel.section.geometry; |
| |
| import java.awt.geom.Point2D; |
| |
| import org.apache.poi.POIXMLException; |
| import org.apache.poi.xdgf.geom.SplineRenderer; |
| import org.apache.poi.xdgf.usermodel.XDGFCell; |
| import org.apache.poi.xdgf.usermodel.XDGFShape; |
| |
| import com.graphbuilder.curve.ControlPath; |
| import com.graphbuilder.curve.ShapeMultiPath; |
| import com.graphbuilder.curve.ValueVector; |
| import com.graphbuilder.geom.PointFactory; |
| import com.microsoft.schemas.office.visio.x2012.main.CellType; |
| import com.microsoft.schemas.office.visio.x2012.main.RowType; |
| |
| public class NURBSTo implements GeometryRow { |
| |
| NURBSTo _master = null; |
| |
| // The x-coordinate of the last control point of a NURBS. |
| Double x = null; |
| |
| // The y-coordinate of the last control point of a NURBS. |
| Double y = null; |
| |
| // The second to the last knot of the NURBS. |
| Double a = null; |
| |
| // The last weight of the NURBS. |
| Double b = null; |
| |
| // The first knot of the NURBS. |
| Double c = null; |
| |
| // The first weight of the NURBS. |
| Double d = null; |
| |
| // A NURBS formula. |
| String e = null; |
| |
| Boolean deleted = null; |
| |
| // TODO: support formulas |
| |
| public NURBSTo(RowType row) { |
| |
| if (row.isSetDel()) |
| deleted = row.getDel(); |
| |
| for (CellType cell : row.getCellArray()) { |
| String cellName = cell.getN(); |
| |
| if (cellName.equals("X")) { |
| x = XDGFCell.parseDoubleValue(cell); |
| } else if (cellName.equals("Y")) { |
| y = XDGFCell.parseDoubleValue(cell); |
| } else if (cellName.equals("A")) { |
| a = XDGFCell.parseDoubleValue(cell); |
| } else if (cellName.equals("B")) { |
| b = XDGFCell.parseDoubleValue(cell); |
| } else if (cellName.equals("C")) { |
| c = XDGFCell.parseDoubleValue(cell); |
| } else if (cellName.equals("D")) { |
| d = XDGFCell.parseDoubleValue(cell); |
| } else if (cellName.equals("E")) { |
| e = cell.getV(); |
| } else { |
| throw new POIXMLException("Invalid cell '" + cellName |
| + "' in NURBS row"); |
| } |
| } |
| } |
| |
| public boolean getDel() { |
| if (deleted != null) |
| return deleted; |
| |
| if (_master != null) |
| return _master.getDel(); |
| |
| return false; |
| } |
| |
| public Double getX() { |
| return x == null ? _master.x : x; |
| } |
| |
| public Double getY() { |
| return y == null ? _master.y : y; |
| } |
| |
| public Double getA() { |
| return a == null ? _master.a : a; |
| } |
| |
| public Double getB() { |
| return b == null ? _master.b : b; |
| } |
| |
| public Double getC() { |
| return c == null ? _master.c : c; |
| } |
| |
| public Double getD() { |
| return d == null ? _master.d : d; |
| } |
| |
| public String getE() { |
| return e == null ? _master.e : e; |
| } |
| |
| @Override |
| public void setupMaster(GeometryRow row) { |
| _master = (NURBSTo) row; |
| } |
| |
| @Override |
| public void addToPath(java.awt.geom.Path2D.Double path, XDGFShape parent) { |
| if (getDel()) |
| return; |
| |
| Point2D last = path.getCurrentPoint(); |
| |
| // A NURBS formula: knotLast, degree, xType, yType, x1, y1, knot1, |
| // weight1, .. |
| String formula = getE().trim(); |
| if (!formula.startsWith("NURBS(") || !formula.endsWith(")")) |
| throw new POIXMLException("Invalid NURBS formula: " + formula); |
| |
| String[] components = formula.substring(6, formula.length() - 1).split( |
| ","); |
| |
| if (components.length < 8) |
| throw new POIXMLException( |
| "Invalid NURBS formula (not enough arguments)"); |
| |
| if ((components.length - 4) % 4 != 0) |
| throw new POIXMLException( |
| "Invalid NURBS formula -- need 4 + n*4 arguments, got " |
| + components.length); |
| |
| double lastControlX = getX(); |
| double lastControlY = getY(); |
| double secondToLastKnot = getA(); |
| double lastWeight = getB(); |
| double firstKnot = getC(); |
| double firstWeight = getD(); |
| |
| double lastKnot = Double.parseDouble(components[0].trim()); |
| int degree = Integer.parseInt(components[1].trim()); |
| int xType = Integer.parseInt(components[2].trim()); |
| int yType = Integer.parseInt(components[3].trim()); |
| |
| double xScale = 1; |
| double yScale = 1; |
| |
| if (xType == 0) |
| xScale = parent.getWidth(); |
| if (yType == 0) |
| yScale = parent.getHeight(); |
| |
| // setup first knots/weights/control point |
| ControlPath controlPath = new ControlPath(); |
| ValueVector knots = new ValueVector(); |
| ValueVector weights = new ValueVector(); |
| |
| knots.add(firstKnot); |
| weights.add(firstWeight); |
| controlPath.addPoint(PointFactory.create(last.getX(), last.getY())); |
| |
| // iterate get knots/weights |
| int sets = (components.length - 4) / 4; |
| for (int i = 0; i < sets; i++) { |
| double x1 = Double.parseDouble(components[4 + i * 4 + 0].trim()); |
| double y1 = Double.parseDouble(components[4 + i * 4 + 1].trim()); |
| double k = Double.parseDouble(components[4 + i * 4 + 2].trim()); |
| double w = Double.parseDouble(components[4 + i * 4 + 3].trim()); |
| |
| controlPath.addPoint(PointFactory.create(x1 * xScale, y1 * yScale)); |
| knots.add(k); |
| weights.add(w); |
| } |
| |
| // last knots/weights/control point |
| knots.add(secondToLastKnot); |
| knots.add(lastKnot); |
| |
| weights.add(lastWeight); |
| |
| controlPath.addPoint(PointFactory.create(lastControlX, lastControlY)); |
| |
| ShapeMultiPath shape = SplineRenderer.createNurbsSpline(controlPath, |
| knots, weights, degree); |
| path.append(shape, true); |
| } |
| } |