package com.ximple.io.dgn7;
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//~--- JDK imports ------------------------------------------------------------
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import java.nio.BufferUnderflowException;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.ShortBuffer;
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import java.util.ArrayList;
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import java.util.List;
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import com.vividsolutions.jts.geom.Envelope;
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import com.ximple.util.DgnUtility;
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/**
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* Record
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*
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* @author Ulysses
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* @version 0.1
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* @since 2006/5/18 上午 11:14:50
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*/
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public class Element
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{
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public static final int CONSTRUCTION_CLASS = 0;
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public static final int CONSTRUCTION_RULE_CLASS = 0;
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public static final int DIMENSION_CLASS = 0;
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public static final int LINEAR_PATTERNED_CLASS = 0;
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public static final int MAX_ELEMENT_SIZE = 0;
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public static final int MAX_VERTICES = 100;
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public static final int PATTERN_AREA = 0;
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public static final int PATTERN_COMPONENT_CLASS = 0;
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public static final int PATTERN_CROSSHATCH = 0;
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public static final int PATTERN_HATCH = 0;
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public static final int PRIMARY_CLASS = 0;
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public static final int PRIMARY_RULE_CLASS = 0;
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protected short[] raw;
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protected byte attrOffset = 0;
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protected ByteBuffer rawBuffer;
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public Element(byte[] raw)
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{
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// this.raw = raw;
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this.raw = new short[raw.length / 2];
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rawBuffer = ByteBuffer.wrap(raw);
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rawBuffer.order(ByteOrder.LITTLE_ENDIAN);
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rawBuffer.asShortBuffer().get(this.raw);
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}
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public int getLineStyle()
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{
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return 0;
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}
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public Envelope getRange()
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{
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int lowCoorX = ((raw[3] << 16) & 0xffff0000) + (raw[2] & 0x0000ffff);
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lowCoorX = DgnUtility.convertFromDGN(lowCoorX);
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int lowCoorY = ((raw[5] << 16) & 0xffff0000) + (raw[4] & 0x0000ffff);
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lowCoorY = DgnUtility.convertFromDGN(lowCoorY);
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int highCoorX = ((raw[9] << 16) & 0xffff0000) + (raw[8] & 0x0000ffff);
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highCoorX = DgnUtility.convertFromDGN(highCoorX);
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int highCoorY = ((raw[11] << 16) & 0xffff0000) + (raw[10] & 0x0000ffff);
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highCoorY = DgnUtility.convertFromDGN(highCoorY);
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return new Envelope(DgnUtility.converUnitToCoord(lowCoorX), DgnUtility.converUnitToCoord(highCoorX),
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DgnUtility.converUnitToCoord(lowCoorY), DgnUtility.converUnitToCoord(highCoorY));
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}
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public void setRange(Envelope bbox)
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{
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int lowCoordX = DgnUtility.converCoordToUnit(bbox.getMinX());
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int temp = DgnUtility.converToDGN(lowCoordX);
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raw[3] = (short) (temp >> 16 & 0x0000ffff);
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raw[2] = (short) (temp & 0x0000ffff);
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int lowCoordY = DgnUtility.converCoordToUnit(bbox.getMinY());
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temp = DgnUtility.converToDGN(lowCoordY);
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raw[5] = (short) (temp >> 16 & 0x0000ffff);
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raw[4] = (short) (temp & 0x0000ffff);
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int highCoorX = DgnUtility.converCoordToUnit(bbox.getMaxX());
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temp = DgnUtility.converToDGN(highCoorX);
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raw[9] = (short) (temp >> 16 & 0x0000ffff);
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raw[8] = (short) (temp & 0x0000ffff);
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int highCoorY = DgnUtility.converCoordToUnit(bbox.getMaxY());
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temp = DgnUtility.converToDGN(highCoorY);
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raw[11] = (short) (temp >> 16 & 0x0000ffff);
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raw[10] = (short) (temp & 0x0000ffff);
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}
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public boolean isComponentElement()
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{
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return (short) ((raw[0] >>> 7) & 0x0001) == 1;
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}
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public boolean removeUserAttributeData(int iLinkageId)
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{
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return true;
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}
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public boolean removeUserAttributeData(int iLinkageId, int iLinkageIndex)
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{
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return true;
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}
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public boolean isDeleted()
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{
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return (short) ((raw[0] >>> 15) & 0x0001) == 1;
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}
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public int getColorIndex()
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{
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return ((raw[17] >>> 8) & 0x00ff);
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}
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public int getType()
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{
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return ((raw[0] >>> 8) & 0x007f);
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}
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public ElementType getElementType()
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{
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return ElementType.forID(getType());
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}
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public int getLevelIndex()
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{
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return (raw[0] & 0x003f);
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}
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public void setLevelIndex(int value)
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{
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raw[0] = (short) ((raw[0] & 0xffc0) | (value & 0x003f));
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}
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public int getWeight()
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{
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return ((raw[17] >>> 3) & 0x001f);
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}
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public void addUserAttributeData(byte[] pDataBlock, Class dataClass, int iLinkageId) throws Element.Exception
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{
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}
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public void addUserAttributeData(byte[] pDataBlock, int iLinkageId, Object oDataDef) throws Element.Exception
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{
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}
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public boolean hasUserAttributeData()
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{
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if (raw[15] <= 0)
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{
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return false;
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}
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short index = (short) (raw[15] + 16);
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if (index == -1)
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{
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return false;
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}
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return true;
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}
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public List<UserAttributeData> getUserAttributeData()
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{
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short[] data;
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short length, nextAttribute;
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if (raw[15] <= 0)
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{
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return new ArrayList<UserAttributeData>();
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}
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short index = (short) (raw[15] + 16 + attrOffset);
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if (index == -1)
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{
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return null;
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}
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ArrayList<UserAttributeData> aLinkageSet = new ArrayList<UserAttributeData>();
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while (index < raw.length)
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{
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length = (short) (raw[index] & (short) 0x00ff);
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if (length == 0)
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{
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break;
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}
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nextAttribute = (short) (index + length + 1);
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data = new short[length];
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System.arraycopy(raw, index + 1, data, 0, length);
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if (data[0] == (short) 0x0020)
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{
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aLinkageSet.add(new FrammeAttributeData(data));
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} else
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{
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aLinkageSet.add(new UserAttributeData(data));
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}
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index = nextAttribute;
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}
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return aLinkageSet;
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}
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public void getUserAttributeData(byte[] pDataBlock, Class dataClass, int iLinkageId, int iLinkageIndex)
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{
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}
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public void getUserAttributeData(byte[] pDataBlock, int iLinkageId, Object oDataDef)
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{
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}
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public ByteBuffer getRawBuffer()
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{
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return rawBuffer.asReadOnlyBuffer();
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}
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public short[] getRawArray()
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{
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if (raw == null) return null;
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short[] result = new short[raw.length];
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System.arraycopy(raw, 0, result, 0, raw.length);
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return result;
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}
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public static class Exception extends java.lang.Exception
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{
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public Exception()
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{
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}
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// Constructs an Record.Exception with no detail message.
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public Exception(String oStrMessage)
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{
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super(oStrMessage);
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}
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}
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protected static int getOffsetPosition(int offset)
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{
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return offset * 2;
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}
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public void resyncBuffer()
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{
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byte[] tempRaw = new byte[this.raw.length * 2];
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ByteBuffer tempBuffer = ByteBuffer.wrap(tempRaw);
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tempBuffer.order(ByteOrder.LITTLE_ENDIAN);
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tempBuffer.asShortBuffer().put(this.raw);
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int pos = rawBuffer.position();
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rawBuffer = tempBuffer;
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rawBuffer.position(pos);
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}
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public static class ElementHandler implements IElementHandler
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{
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ElementType elementType;
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public ElementHandler(ElementType elementType)
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{
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this.elementType = elementType;
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}
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public ElementType getElementType()
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{
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return elementType;
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}
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public Object read(ByteBuffer buffer, short signature, int length)
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{
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byte[] dst = new byte[length];
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try
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{
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buffer.get(dst, 4, dst.length - 4);
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} catch (BufferUnderflowException exception)
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{
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throw exception;
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}
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ByteBuffer tmpBuffer = ByteBuffer.wrap(dst);
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tmpBuffer.order(ByteOrder.LITTLE_ENDIAN);
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tmpBuffer.position(0);
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tmpBuffer.putShort(signature);
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tmpBuffer.putShort((short) ((length / 2) - 2));
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/*
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ShortBuffer sbuffer = tmpBuffer.asShortBuffer();
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short[] rawMem = new short[(length / 2)];
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sbuffer.get(rawMem, 2, rawMem.length - 2);
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rawMem[0] = signature;
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rawMem[1] = (short) ((length / 2) - 2);
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*/
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Element elm = createElement(dst);
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return elm;
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}
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public void write(ByteBuffer buffer, Object element)
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{
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buffer.put(((Element) element).rawBuffer);
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}
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public int getLength(Object element)
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{
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return ((Element) element).raw.length;
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}
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public int getBufferLength(Object element)
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{
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return ((Element) element).rawBuffer.limit();
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}
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protected Element createElement(byte[] raw)
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{
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return new Element(raw);
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}
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}
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}
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