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/*
* Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javafx.scene.transform;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.DoublePropertyBase;
import com.sun.javafx.geom.transform.Affine3D;
import com.sun.javafx.geom.transform.BaseTransform;
import javafx.geometry.Point2D;
import javafx.geometry.Point3D;
/**
* This class represents an {@code Affine} object that translates coordinates
* by the specified factors. The matrix representing the translating
* transformation by distances {@code x}, {@code y} and {@code z} is as follows:
*
* [ 1 0 0 x ]
* [ 0 1 0 y ]
* [ 0 0 1 z ]
*
* @since JavaFX 2.0
*/
public class Translate extends Transform {
/**
* Creates a default Translate (identity).
*/
public Translate() {
}
/**
* Creates a two-dimensional Translate.
* @param x the distance by which coordinates are translated in the
* X axis direction
* @param y the distance by which coordinates are translated in the
* Y axis direction
*/
public Translate(double x, double y) {
setX(x);
setY(y);
}
/**
* Creates a three-dimensional Translate.
* @param x the distance by which coordinates are translated in the
* X axis direction
* @param y the distance by which coordinates are translated in the
* Y axis direction
* @param z the distance by which coordinates are translated in the
* Z axis direction
*/
public Translate(double x, double y, double z) {
this(x, y);
setZ(z);
}
/**
* Defines the distance by which coordinates are translated in the
* X axis direction
*/
private DoubleProperty x;
public final void setX(double value) {
xProperty().set(value);
}
public final double getX() {
return x == null ? 0.0 : x.get();
}
public final DoubleProperty xProperty() {
if (x == null) {
x = new DoublePropertyBase() {
@Override
public void invalidated() {
transformChanged();
}
@Override
public Object getBean() {
return Translate.this;
}
@Override
public String getName() {
return "x";
}
};
}
return x;
}
/**
* Defines the distance by which coordinates are translated in the
* Y axis direction
*/
private DoubleProperty y;
public final void setY(double value) {
yProperty().set(value);
}
public final double getY() {
return y == null ? 0.0 : y.get();
}
public final DoubleProperty yProperty() {
if (y == null) {
y = new DoublePropertyBase() {
@Override
public void invalidated() {
transformChanged();
}
@Override
public Object getBean() {
return Translate.this;
}
@Override
public String getName() {
return "y";
}
};
}
return y;
}
/**
* Defines the distance by which coordinates are translated in the
* Z axis direction
*/
private DoubleProperty z;
public final void setZ(double value) {
zProperty().set(value);
}
public final double getZ() {
return z == null ? 0.0 : z.get();
}
public final DoubleProperty zProperty() {
if (z == null) {
z = new DoublePropertyBase() {
@Override
public void invalidated() {
transformChanged();
}
@Override
public Object getBean() {
return Translate.this;
}
@Override
public String getName() {
return "z";
}
};
}
return z;
}
/* *************************************************************************
* *
* Element getters *
* *
**************************************************************************/
@Override
public double getTx() {
return getX();
}
@Override
public double getTy() {
return getY();
}
@Override
public double getTz() {
return getZ();
}
/* *************************************************************************
* *
* State getters *
* *
**************************************************************************/
@Override
boolean computeIs2D() {
return getZ() == 0.0;
}
@Override
boolean computeIsIdentity() {
return getX() == 0.0 && getY() == 0.0 && getZ() == 0.0;
}
/* *************************************************************************
* *
* Array getters *
* *
**************************************************************************/
@Override
void fill2DArray(double[] array) {
array[0] = 1.0;
array[1] = 0.0;
array[2] = getX();
array[3] = 0.0;
array[4] = 1.0;
array[5] = getY();
}
@Override
void fill3DArray(double[] array) {
array[0] = 1.0;
array[1] = 0.0;
array[2] = 0.0;
array[3] = getX();
array[4] = 0.0;
array[5] = 1.0;
array[6] = 0.0;
array[7] = getY();
array[8] = 0.0;
array[9] = 0.0;
array[10] = 1.0;
array[11] = getZ();
}
/* *************************************************************************
* *
* Transform creators *
* *
**************************************************************************/
@Override
public Transform createConcatenation(Transform transform) {
if (transform instanceof Translate) {
final Translate t = (Translate) transform;
return new Translate(
getX() + t.getX(),
getY() + t.getY(),
getZ() + t.getZ());
}
if (transform instanceof Scale) {
final Scale s = (Scale) transform;
final double sx = s.getX();
final double sy = s.getY();
final double sz = s.getZ();
final double tx = getX();
final double ty = getY();
final double tz = getZ();
if ((tx == 0.0 || sx != 1.0) &&
(ty == 0.0 || sy != 1.0) &&
(tz == 0.0 || sz != 1.0)) {
return new Scale(
sx, sy, sz,
s.getPivotX() + (sx == 1.0 ? 0 : tx / (1.0 - sx)),
s.getPivotY() + (sy == 1.0 ? 0 : ty / (1.0 - sy)),
s.getPivotZ() + (sz == 1.0 ? 0 : tz / (1.0 - sz)));
}
}
if (transform instanceof Affine) {
Affine a = (Affine) transform.clone();
a.prepend(this);
return a;
}
final double txx = transform.getMxx();
final double txy = transform.getMxy();
final double txz = transform.getMxz();
final double ttx = transform.getTx();
final double tyx = transform.getMyx();
final double tyy = transform.getMyy();
final double tyz = transform.getMyz();
final double tty = transform.getTy();
final double tzx = transform.getMzx();
final double tzy = transform.getMzy();
final double tzz = transform.getMzz();
final double ttz = transform.getTz();
return new Affine(
txx, txy, txz, ttx + getX(),
tyx, tyy, tyz, tty + getY(),
tzx, tzy, tzz, ttz + getZ());
}
@Override
public Translate createInverse() {
return new Translate(-getX(), -getY(), -getZ());
}
@Override
public Translate clone() {
return new Translate(getX(), getY(), getZ());
}
/* *************************************************************************
* *
* Transform, Inverse Transform *
* *
**************************************************************************/
@Override
public Point2D transform(double x, double y) {
ensureCanTransform2DPoint();
return new Point2D(
x + getX(),
y + getY());
}
@Override
public Point3D transform(double x, double y, double z) {
return new Point3D(
x + getX(),
y + getY(),
z + getZ());
}
@Override
void transform2DPointsImpl(double[] srcPts, int srcOff,
double[] dstPts, int dstOff, int numPts) {
final double tx = getX();
final double ty = getY();
while (--numPts >= 0) {
final double x = srcPts[srcOff++];
final double y = srcPts[srcOff++];
dstPts[dstOff++] = x + tx;
dstPts[dstOff++] = y + ty;
}
}
@Override
void transform3DPointsImpl(double[] srcPts, int srcOff,
double[] dstPts, int dstOff, int numPts) {
final double tx = getX();
final double ty = getY();
final double tz = getZ();
while (--numPts >= 0) {
final double x = srcPts[srcOff++];
final double y = srcPts[srcOff++];
final double z = srcPts[srcOff++];
dstPts[dstOff++] = x + tx;
dstPts[dstOff++] = y + ty;
dstPts[dstOff++] = z + tz;
}
}
@Override
public Point2D deltaTransform(double x, double y) {
ensureCanTransform2DPoint();
return new Point2D(x, y);
}
@Override
public Point2D deltaTransform(Point2D point) {
if (point == null) {
throw new NullPointerException();
}
ensureCanTransform2DPoint();
return point;
}
@Override
public Point3D deltaTransform(double x, double y, double z) {
return new Point3D(x, y, z);
}
@Override
public Point3D deltaTransform(Point3D point) {
if (point == null) {
throw new NullPointerException();
}
return point;
}
@Override
public Point2D inverseTransform(double x, double y) {
ensureCanTransform2DPoint();
return new Point2D(
x - getX(),
y - getY());
}
@Override
public Point3D inverseTransform(double x, double y, double z) {
return new Point3D(
x - getX(),
y - getY(),
z - getZ());
}
@Override
void inverseTransform2DPointsImpl(double[] srcPts, int srcOff,
double[] dstPts, int dstOff, int numPts) {
final double tx = getX();
final double ty = getY();
while (--numPts >= 0) {
dstPts[dstOff++] = srcPts[srcOff++] - tx;
dstPts[dstOff++] = srcPts[srcOff++] - ty;
}
}
@Override
void inverseTransform3DPointsImpl(double[] srcPts, int srcOff,
double[] dstPts, int dstOff, int numPts) {
final double tx = getX();
final double ty = getY();
final double tz = getZ();
while (--numPts >= 0) {
dstPts[dstOff++] = srcPts[srcOff++] - tx;
dstPts[dstOff++] = srcPts[srcOff++] - ty;
dstPts[dstOff++] = srcPts[srcOff++] - tz;
}
}
@Override
public Point2D inverseDeltaTransform(double x, double y) {
ensureCanTransform2DPoint();
return new Point2D(x, y);
}
@Override
public Point2D inverseDeltaTransform(Point2D point) {
if (point == null) {
throw new NullPointerException();
}
ensureCanTransform2DPoint();
return point;
}
@Override
public Point3D inverseDeltaTransform(double x, double y, double z) {
return new Point3D(x, y, z);
}
@Override
public Point3D inverseDeltaTransform(Point3D point) {
if (point == null) {
throw new NullPointerException();
}
return point;
}
/* *************************************************************************
* *
* Other API *
* *
**************************************************************************/
/**
* Returns a string representation of this {@code Translate} object.
* @return a string representation of this {@code Translate} object.
*/
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("Translate [");
sb.append("x=").append(getX());
sb.append(", y=").append(getY());
sb.append(", z=").append(getZ());
return sb.append("]").toString();
}
/* *************************************************************************
* *
* Internal implementation stuff *
* *
**************************************************************************/
@Override
void apply(final Affine3D trans) {
trans.translate(getX(), getY(), getZ());
}
@Override
BaseTransform derive(final BaseTransform trans) {
return trans.deriveWithTranslation(getX(), getY(), getZ());
}
@Override
void validate() {
getX();
getY();
getZ();
}
@Override
void appendTo(Affine a) {
a.appendTranslation(getTx(), getTy(), getTz());
}
@Override
void prependTo(Affine a) {
a.prependTranslation(getTx(), getTy(), getTz());
}
}
