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Mini Shell
Mini Shell
package pt.tumba.parser.swf;
import java.io.IOException;
/**
* Description of the Class
*
*@author unknown
*@created 15 de Setembro de 2002
*/
public class Matrix {
/**
* Description of the Field
*/
protected double scaleX = 1.0;
/**
* Description of the Field
*/
protected double scaleY = 1.0;
/**
* Description of the Field
*/
protected double skew0 = 0.0;
/**
* Description of the Field
*/
protected double skew1 = 0.0;
/**
* Description of the Field
*/
protected double translateX = 0.0;
/**
* Description of the Field
*/
protected double translateY = 0.0;
/**
* Gets the scaleX attribute of the Matrix object
*
*@return The scaleX value
*/
public double getScaleX() {
return scaleX;
}
/**
* Gets the scaleY attribute of the Matrix object
*
*@return The scaleY value
*/
public double getScaleY() {
return scaleY;
}
/**
* Gets the skew0 attribute of the Matrix object
*
*@return The skew0 value
*/
public double getSkew0() {
return skew0;
}
/**
* Gets the skew1 attribute of the Matrix object
*
*@return The skew1 value
*/
public double getSkew1() {
return skew1;
}
/**
* Gets the translateX attribute of the Matrix object
*
*@return The translateX value
*/
public double getTranslateX() {
return translateX;
}
/**
* Gets the translateY attribute of the Matrix object
*
*@return The translateY value
*/
public double getTranslateY() {
return translateY;
}
/**
* Sets the scaleX attribute of the Matrix object
*
*@param scaleX The new scaleX value
*/
public void setScaleX(double scaleX) {
this.scaleX = scaleX;
}
/**
* Sets the scaleY attribute of the Matrix object
*
*@param scaleY The new scaleY value
*/
public void setScaleY(double scaleY) {
this.scaleY = scaleY;
}
/**
* Sets the skew0 attribute of the Matrix object
*
*@param skew0 The new skew0 value
*/
public void setSkew0(double skew0) {
this.skew0 = skew0;
}
/**
* Sets the skew1 attribute of the Matrix object
*
*@param skew1 The new skew1 value
*/
public void setSkew1(double skew1) {
this.skew1 = skew1;
}
/**
* Sets the translateX attribute of the Matrix object
*
*@param translateX The new translateX value
*/
public void setTranslateX(double translateX) {
this.translateX = translateX;
}
/**
* Sets the translateY attribute of the Matrix object
*
*@param translateY The new translateY value
*/
public void setTranslateY(double translateY) {
this.translateY = translateY;
}
/**
* An identity matrix
*/
public Matrix() {
this(1.0, 1.0, 0.0, 0.0, 0, 0);
}
/**
* Constructor for the Matrix object
*
*@param translateX Description of the Parameter
*@param translateY Description of the Parameter
*/
public Matrix(double translateX, double translateY) {
this(1.0, 1.0, 0.0, 0.0, translateX, translateY);
}
/**
* Copy another matrix
*
*@param copy Description of the Parameter
*/
public Matrix(Matrix copy) {
if (copy == null) {
return;
}
scaleX = copy.scaleX;
scaleY = copy.scaleY;
skew0 = copy.skew0;
skew1 = copy.skew1;
translateX = copy.translateX;
translateY = copy.translateY;
}
/**
* Constructor for the Matrix object
*
*@param scaleX Description of the Parameter
*@param scaleY Description of the Parameter
*@param skew0 Description of the Parameter
*@param skew1 Description of the Parameter
*@param translateX Description of the Parameter
*@param translateY Description of the Parameter
*/
public Matrix(double scaleX, double scaleY,
double skew0, double skew1,
double translateX, double translateY) {
this.scaleX = scaleX;
this.scaleY = scaleY;
this.skew0 = skew0;
this.skew1 = skew1;
this.translateX = translateX;
this.translateY = translateY;
}
/**
* Constructor for the Matrix object
*
*@param in Description of the Parameter
*@exception IOException Description of the Exception
*/
public Matrix(InStream in) throws IOException {
in.synchBits();
if (in.readUBits(1) == 1) {
//has scale values
int scaleBits = (int) in.readUBits(5);
scaleX = ((double) in.readSBits(scaleBits)) / 65536.0;
scaleY = ((double) in.readSBits(scaleBits)) / 65536.0;
}
if (in.readUBits(1) == 1) {
//has rotate/skew values
int skewBits = (int) in.readUBits(5);
skew0 = ((double) in.readSBits(skewBits)) / 65536.0;
skew1 = ((double) in.readSBits(skewBits)) / 65536.0;
}
int translateBits = (int) in.readUBits(5);
translateX = in.readSBits(translateBits);
translateY = in.readSBits(translateBits);
}
/**
* Description of the Method
*
*@param out Description of the Parameter
*@exception IOException Description of the Exception
*/
public void write(OutStream out) throws IOException {
out.flushBits();
if (scaleX != 1.0 || scaleY != 1.0) {
//if non-default values
int intScaleX = (int) (scaleX * 65536.0);
int intScaleY = (int) (scaleY * 65536.0);
int scaleBits = OutStream.determineSignedBitSize(intScaleX);
int scaleBits2 = OutStream.determineSignedBitSize(intScaleY);
if (scaleBits < scaleBits2) {
scaleBits = scaleBits2;
}
out.writeUBits(1, 1);
out.writeUBits(5, scaleBits);
out.writeSBits(scaleBits, intScaleX);
out.writeSBits(scaleBits, intScaleY);
} else {
out.writeUBits(1, 0);
}
if (skew0 != 0.0 || skew1 != 0.0) {
//if non-default values
int intSkew0 = (int) (skew0 * 65536.0);
int intSkew1 = (int) (skew1 * 65536.0);
int skewBits = OutStream.determineSignedBitSize(intSkew0);
int skewBits2 = OutStream.determineSignedBitSize(intSkew1);
if (skewBits < skewBits2) {
skewBits = skewBits2;
}
out.writeUBits(1, 1);
out.writeUBits(5, skewBits);
out.writeSBits(skewBits, intSkew0);
out.writeSBits(skewBits, intSkew1);
} else {
out.writeUBits(1, 0);
}
if (translateX == 0 && translateY == 0) {
out.writeUBits(5, 0);
} else {
int translateBits = OutStream.determineSignedBitSize((int) translateX);
int translateBits2 = OutStream.determineSignedBitSize((int) translateY);
if (translateBits < translateBits2) {
translateBits = translateBits2;
}
out.writeUBits(5, translateBits);
out.writeSBits(translateBits, (int) translateX);
out.writeSBits(translateBits, (int) translateY);
}
out.flushBits();
}
/**
* Description of the Method
*
*@return Description of the Return Value
*/
public String toString() {
return " Matrix(sx,sy,s0,s1,tx,ty)=(" +
scaleX + "," + scaleY + "," + skew0 + "," + skew1 + "," +
translateX + "," + translateY + ")";
}
}
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