Files
frameworks_base/graphics/java/android/graphics/Matrix.java
Hans Boehm ffa84e008c Reduce risk of memory corruption due to finalization.
Many classes in graphics/java and elsewhere deallocate native memory
in a finalizer on the assumption that instance methods can no longer
be called once the finalizer has been called.  This is incorrect if
the object can be used, possibly indirectly, from another finalizer,
possibly one in the application.

This is the initial installment of a patch to cause such post-finalization
uses to at least see a null pointer rather than causing memory corruption
by accessing deallocated native memory. This should make it possible to
identify and fix such finalization ordering issues.

There are more graphics classes that need this treatment, and probably
many more in other subsystems.

This solution is < 100% effective if finalizers can be invoked
concurrently.  We currently promise that they aren't.

(In my opinion, the real cause here is a language spec bug.  But that ship
has sailed.)

Bug: 18178237
Change-Id: I844cf1e0fbb190407389c4f8e8f072752cca6198
2015-09-08 18:27:36 -07:00

920 lines
32 KiB
Java

/*
* Copyright (C) 2006 The Android Open Source Project
*
* Licensed 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 android.graphics;
import java.io.PrintWriter;
/**
* The Matrix class holds a 3x3 matrix for transforming coordinates.
*/
public class Matrix {
public static final int MSCALE_X = 0; //!< use with getValues/setValues
public static final int MSKEW_X = 1; //!< use with getValues/setValues
public static final int MTRANS_X = 2; //!< use with getValues/setValues
public static final int MSKEW_Y = 3; //!< use with getValues/setValues
public static final int MSCALE_Y = 4; //!< use with getValues/setValues
public static final int MTRANS_Y = 5; //!< use with getValues/setValues
public static final int MPERSP_0 = 6; //!< use with getValues/setValues
public static final int MPERSP_1 = 7; //!< use with getValues/setValues
public static final int MPERSP_2 = 8; //!< use with getValues/setValues
/** @hide */
public final static Matrix IDENTITY_MATRIX = new Matrix() {
void oops() {
throw new IllegalStateException("Matrix can not be modified");
}
@Override
public void set(Matrix src) {
oops();
}
@Override
public void reset() {
oops();
}
@Override
public void setTranslate(float dx, float dy) {
oops();
}
@Override
public void setScale(float sx, float sy, float px, float py) {
oops();
}
@Override
public void setScale(float sx, float sy) {
oops();
}
@Override
public void setRotate(float degrees, float px, float py) {
oops();
}
@Override
public void setRotate(float degrees) {
oops();
}
@Override
public void setSinCos(float sinValue, float cosValue, float px, float py) {
oops();
}
@Override
public void setSinCos(float sinValue, float cosValue) {
oops();
}
@Override
public void setSkew(float kx, float ky, float px, float py) {
oops();
}
@Override
public void setSkew(float kx, float ky) {
oops();
}
@Override
public boolean setConcat(Matrix a, Matrix b) {
oops();
return false;
}
@Override
public boolean preTranslate(float dx, float dy) {
oops();
return false;
}
@Override
public boolean preScale(float sx, float sy, float px, float py) {
oops();
return false;
}
@Override
public boolean preScale(float sx, float sy) {
oops();
return false;
}
@Override
public boolean preRotate(float degrees, float px, float py) {
oops();
return false;
}
@Override
public boolean preRotate(float degrees) {
oops();
return false;
}
@Override
public boolean preSkew(float kx, float ky, float px, float py) {
oops();
return false;
}
@Override
public boolean preSkew(float kx, float ky) {
oops();
return false;
}
@Override
public boolean preConcat(Matrix other) {
oops();
return false;
}
@Override
public boolean postTranslate(float dx, float dy) {
oops();
return false;
}
@Override
public boolean postScale(float sx, float sy, float px, float py) {
oops();
return false;
}
@Override
public boolean postScale(float sx, float sy) {
oops();
return false;
}
@Override
public boolean postRotate(float degrees, float px, float py) {
oops();
return false;
}
@Override
public boolean postRotate(float degrees) {
oops();
return false;
}
@Override
public boolean postSkew(float kx, float ky, float px, float py) {
oops();
return false;
}
@Override
public boolean postSkew(float kx, float ky) {
oops();
return false;
}
@Override
public boolean postConcat(Matrix other) {
oops();
return false;
}
@Override
public boolean setRectToRect(RectF src, RectF dst, ScaleToFit stf) {
oops();
return false;
}
@Override
public boolean setPolyToPoly(float[] src, int srcIndex, float[] dst, int dstIndex,
int pointCount) {
oops();
return false;
}
@Override
public void setValues(float[] values) {
oops();
}
};
/**
* @hide
*/
public long native_instance;
/**
* Create an identity matrix
*/
public Matrix() {
native_instance = native_create(0);
}
/**
* Create a matrix that is a (deep) copy of src
* @param src The matrix to copy into this matrix
*/
public Matrix(Matrix src) {
native_instance = native_create(src != null ? src.native_instance : 0);
}
/**
* Returns true if the matrix is identity.
* This maybe faster than testing if (getType() == 0)
*/
public boolean isIdentity() {
return native_isIdentity(native_instance);
}
/**
* Gets whether this matrix is affine. An affine matrix preserves
* straight lines and has no perspective.
*
* @return Whether the matrix is affine.
*/
public boolean isAffine() {
return native_isAffine(native_instance);
}
/**
* Returns true if will map a rectangle to another rectangle. This can be
* true if the matrix is identity, scale-only, or rotates a multiple of 90
* degrees.
*/
public boolean rectStaysRect() {
return native_rectStaysRect(native_instance);
}
/**
* (deep) copy the src matrix into this matrix. If src is null, reset this
* matrix to the identity matrix.
*/
public void set(Matrix src) {
if (src == null) {
reset();
} else {
native_set(native_instance, src.native_instance);
}
}
/** Returns true iff obj is a Matrix and its values equal our values.
*/
@Override
public boolean equals(Object obj) {
//if (obj == this) return true; -- NaN value would mean matrix != itself
if (!(obj instanceof Matrix)) return false;
return native_equals(native_instance, ((Matrix)obj).native_instance);
}
@Override
public int hashCode() {
// This should generate the hash code by performing some arithmetic operation on all
// the matrix elements -- our equals() does an element-by-element comparison, and we
// need to ensure that the hash code for two equal objects is the same. We're not
// really using this at the moment, so we take the easy way out.
return 44;
}
/** Set the matrix to identity */
public void reset() {
native_reset(native_instance);
}
/** Set the matrix to translate by (dx, dy). */
public void setTranslate(float dx, float dy) {
native_setTranslate(native_instance, dx, dy);
}
/**
* Set the matrix to scale by sx and sy, with a pivot point at (px, py).
* The pivot point is the coordinate that should remain unchanged by the
* specified transformation.
*/
public void setScale(float sx, float sy, float px, float py) {
native_setScale(native_instance, sx, sy, px, py);
}
/** Set the matrix to scale by sx and sy. */
public void setScale(float sx, float sy) {
native_setScale(native_instance, sx, sy);
}
/**
* Set the matrix to rotate by the specified number of degrees, with a pivot
* point at (px, py). The pivot point is the coordinate that should remain
* unchanged by the specified transformation.
*/
public void setRotate(float degrees, float px, float py) {
native_setRotate(native_instance, degrees, px, py);
}
/**
* Set the matrix to rotate about (0,0) by the specified number of degrees.
*/
public void setRotate(float degrees) {
native_setRotate(native_instance, degrees);
}
/**
* Set the matrix to rotate by the specified sine and cosine values, with a
* pivot point at (px, py). The pivot point is the coordinate that should
* remain unchanged by the specified transformation.
*/
public void setSinCos(float sinValue, float cosValue, float px, float py) {
native_setSinCos(native_instance, sinValue, cosValue, px, py);
}
/** Set the matrix to rotate by the specified sine and cosine values. */
public void setSinCos(float sinValue, float cosValue) {
native_setSinCos(native_instance, sinValue, cosValue);
}
/**
* Set the matrix to skew by sx and sy, with a pivot point at (px, py).
* The pivot point is the coordinate that should remain unchanged by the
* specified transformation.
*/
public void setSkew(float kx, float ky, float px, float py) {
native_setSkew(native_instance, kx, ky, px, py);
}
/** Set the matrix to skew by sx and sy. */
public void setSkew(float kx, float ky) {
native_setSkew(native_instance, kx, ky);
}
/**
* Set the matrix to the concatenation of the two specified matrices and
* return true.
*
* <p>Either of the two matrices may also be the target matrix, that is
* <code>matrixA.setConcat(matrixA, matrixB);</code> is valid.</p>
*
* <p class="note">In {@link android.os.Build.VERSION_CODES#GINGERBREAD_MR1} and below, this
* function returns true only if the result can be represented. In
* {@link android.os.Build.VERSION_CODES#HONEYCOMB} and above, it always returns true.</p>
*/
public boolean setConcat(Matrix a, Matrix b) {
native_setConcat(native_instance, a.native_instance, b.native_instance);
return true;
}
/**
* Preconcats the matrix with the specified translation.
* M' = M * T(dx, dy)
*/
public boolean preTranslate(float dx, float dy) {
native_preTranslate(native_instance, dx, dy);
return true;
}
/**
* Preconcats the matrix with the specified scale.
* M' = M * S(sx, sy, px, py)
*/
public boolean preScale(float sx, float sy, float px, float py) {
native_preScale(native_instance, sx, sy, px, py);
return true;
}
/**
* Preconcats the matrix with the specified scale.
* M' = M * S(sx, sy)
*/
public boolean preScale(float sx, float sy) {
native_preScale(native_instance, sx, sy);
return true;
}
/**
* Preconcats the matrix with the specified rotation.
* M' = M * R(degrees, px, py)
*/
public boolean preRotate(float degrees, float px, float py) {
native_preRotate(native_instance, degrees, px, py);
return true;
}
/**
* Preconcats the matrix with the specified rotation.
* M' = M * R(degrees)
*/
public boolean preRotate(float degrees) {
native_preRotate(native_instance, degrees);
return true;
}
/**
* Preconcats the matrix with the specified skew.
* M' = M * K(kx, ky, px, py)
*/
public boolean preSkew(float kx, float ky, float px, float py) {
native_preSkew(native_instance, kx, ky, px, py);
return true;
}
/**
* Preconcats the matrix with the specified skew.
* M' = M * K(kx, ky)
*/
public boolean preSkew(float kx, float ky) {
native_preSkew(native_instance, kx, ky);
return true;
}
/**
* Preconcats the matrix with the specified matrix.
* M' = M * other
*/
public boolean preConcat(Matrix other) {
native_preConcat(native_instance, other.native_instance);
return true;
}
/**
* Postconcats the matrix with the specified translation.
* M' = T(dx, dy) * M
*/
public boolean postTranslate(float dx, float dy) {
native_postTranslate(native_instance, dx, dy);
return true;
}
/**
* Postconcats the matrix with the specified scale.
* M' = S(sx, sy, px, py) * M
*/
public boolean postScale(float sx, float sy, float px, float py) {
native_postScale(native_instance, sx, sy, px, py);
return true;
}
/**
* Postconcats the matrix with the specified scale.
* M' = S(sx, sy) * M
*/
public boolean postScale(float sx, float sy) {
native_postScale(native_instance, sx, sy);
return true;
}
/**
* Postconcats the matrix with the specified rotation.
* M' = R(degrees, px, py) * M
*/
public boolean postRotate(float degrees, float px, float py) {
native_postRotate(native_instance, degrees, px, py);
return true;
}
/**
* Postconcats the matrix with the specified rotation.
* M' = R(degrees) * M
*/
public boolean postRotate(float degrees) {
native_postRotate(native_instance, degrees);
return true;
}
/**
* Postconcats the matrix with the specified skew.
* M' = K(kx, ky, px, py) * M
*/
public boolean postSkew(float kx, float ky, float px, float py) {
native_postSkew(native_instance, kx, ky, px, py);
return true;
}
/**
* Postconcats the matrix with the specified skew.
* M' = K(kx, ky) * M
*/
public boolean postSkew(float kx, float ky) {
native_postSkew(native_instance, kx, ky);
return true;
}
/**
* Postconcats the matrix with the specified matrix.
* M' = other * M
*/
public boolean postConcat(Matrix other) {
native_postConcat(native_instance, other.native_instance);
return true;
}
/** Controlls how the src rect should align into the dst rect for
setRectToRect().
*/
public enum ScaleToFit {
/**
* Scale in X and Y independently, so that src matches dst exactly.
* This may change the aspect ratio of the src.
*/
FILL (0),
/**
* Compute a scale that will maintain the original src aspect ratio,
* but will also ensure that src fits entirely inside dst. At least one
* axis (X or Y) will fit exactly. START aligns the result to the
* left and top edges of dst.
*/
START (1),
/**
* Compute a scale that will maintain the original src aspect ratio,
* but will also ensure that src fits entirely inside dst. At least one
* axis (X or Y) will fit exactly. The result is centered inside dst.
*/
CENTER (2),
/**
* Compute a scale that will maintain the original src aspect ratio,
* but will also ensure that src fits entirely inside dst. At least one
* axis (X or Y) will fit exactly. END aligns the result to the
* right and bottom edges of dst.
*/
END (3);
// the native values must match those in SkMatrix.h
ScaleToFit(int nativeInt) {
this.nativeInt = nativeInt;
}
final int nativeInt;
}
/**
* Set the matrix to the scale and translate values that map the source
* rectangle to the destination rectangle, returning true if the the result
* can be represented.
*
* @param src the source rectangle to map from.
* @param dst the destination rectangle to map to.
* @param stf the ScaleToFit option
* @return true if the matrix can be represented by the rectangle mapping.
*/
public boolean setRectToRect(RectF src, RectF dst, ScaleToFit stf) {
if (dst == null || src == null) {
throw new NullPointerException();
}
return native_setRectToRect(native_instance, src, dst, stf.nativeInt);
}
// private helper to perform range checks on arrays of "points"
private static void checkPointArrays(float[] src, int srcIndex,
float[] dst, int dstIndex,
int pointCount) {
// check for too-small and too-big indices
int srcStop = srcIndex + (pointCount << 1);
int dstStop = dstIndex + (pointCount << 1);
if ((pointCount | srcIndex | dstIndex | srcStop | dstStop) < 0 ||
srcStop > src.length || dstStop > dst.length) {
throw new ArrayIndexOutOfBoundsException();
}
}
/**
* Set the matrix such that the specified src points would map to the
* specified dst points. The "points" are represented as an array of floats,
* order [x0, y0, x1, y1, ...], where each "point" is 2 float values.
*
* @param src The array of src [x,y] pairs (points)
* @param srcIndex Index of the first pair of src values
* @param dst The array of dst [x,y] pairs (points)
* @param dstIndex Index of the first pair of dst values
* @param pointCount The number of pairs/points to be used. Must be [0..4]
* @return true if the matrix was set to the specified transformation
*/
public boolean setPolyToPoly(float[] src, int srcIndex,
float[] dst, int dstIndex,
int pointCount) {
if (pointCount > 4) {
throw new IllegalArgumentException();
}
checkPointArrays(src, srcIndex, dst, dstIndex, pointCount);
return native_setPolyToPoly(native_instance, src, srcIndex,
dst, dstIndex, pointCount);
}
/**
* If this matrix can be inverted, return true and if inverse is not null,
* set inverse to be the inverse of this matrix. If this matrix cannot be
* inverted, ignore inverse and return false.
*/
public boolean invert(Matrix inverse) {
return native_invert(native_instance, inverse.native_instance);
}
/**
* Apply this matrix to the array of 2D points specified by src, and write
* the transformed points into the array of points specified by dst. The
* two arrays represent their "points" as pairs of floats [x, y].
*
* @param dst The array of dst points (x,y pairs)
* @param dstIndex The index of the first [x,y] pair of dst floats
* @param src The array of src points (x,y pairs)
* @param srcIndex The index of the first [x,y] pair of src floats
* @param pointCount The number of points (x,y pairs) to transform
*/
public void mapPoints(float[] dst, int dstIndex, float[] src, int srcIndex,
int pointCount) {
checkPointArrays(src, srcIndex, dst, dstIndex, pointCount);
native_mapPoints(native_instance, dst, dstIndex, src, srcIndex,
pointCount, true);
}
/**
* Apply this matrix to the array of 2D vectors specified by src, and write
* the transformed vectors into the array of vectors specified by dst. The
* two arrays represent their "vectors" as pairs of floats [x, y].
*
* Note: this method does not apply the translation associated with the matrix. Use
* {@link Matrix#mapPoints(float[], int, float[], int, int)} if you want the translation
* to be applied.
*
* @param dst The array of dst vectors (x,y pairs)
* @param dstIndex The index of the first [x,y] pair of dst floats
* @param src The array of src vectors (x,y pairs)
* @param srcIndex The index of the first [x,y] pair of src floats
* @param vectorCount The number of vectors (x,y pairs) to transform
*/
public void mapVectors(float[] dst, int dstIndex, float[] src, int srcIndex,
int vectorCount) {
checkPointArrays(src, srcIndex, dst, dstIndex, vectorCount);
native_mapPoints(native_instance, dst, dstIndex, src, srcIndex,
vectorCount, false);
}
/**
* Apply this matrix to the array of 2D points specified by src, and write
* the transformed points into the array of points specified by dst. The
* two arrays represent their "points" as pairs of floats [x, y].
*
* @param dst The array of dst points (x,y pairs)
* @param src The array of src points (x,y pairs)
*/
public void mapPoints(float[] dst, float[] src) {
if (dst.length != src.length) {
throw new ArrayIndexOutOfBoundsException();
}
mapPoints(dst, 0, src, 0, dst.length >> 1);
}
/**
* Apply this matrix to the array of 2D vectors specified by src, and write
* the transformed vectors into the array of vectors specified by dst. The
* two arrays represent their "vectors" as pairs of floats [x, y].
*
* Note: this method does not apply the translation associated with the matrix. Use
* {@link Matrix#mapPoints(float[], float[])} if you want the translation to be applied.
*
* @param dst The array of dst vectors (x,y pairs)
* @param src The array of src vectors (x,y pairs)
*/
public void mapVectors(float[] dst, float[] src) {
if (dst.length != src.length) {
throw new ArrayIndexOutOfBoundsException();
}
mapVectors(dst, 0, src, 0, dst.length >> 1);
}
/**
* Apply this matrix to the array of 2D points, and write the transformed
* points back into the array
*
* @param pts The array [x0, y0, x1, y1, ...] of points to transform.
*/
public void mapPoints(float[] pts) {
mapPoints(pts, 0, pts, 0, pts.length >> 1);
}
/**
* Apply this matrix to the array of 2D vectors, and write the transformed
* vectors back into the array.
*
* Note: this method does not apply the translation associated with the matrix. Use
* {@link Matrix#mapPoints(float[])} if you want the translation to be applied.
*
* @param vecs The array [x0, y0, x1, y1, ...] of vectors to transform.
*/
public void mapVectors(float[] vecs) {
mapVectors(vecs, 0, vecs, 0, vecs.length >> 1);
}
/**
* Apply this matrix to the src rectangle, and write the transformed
* rectangle into dst. This is accomplished by transforming the 4 corners of
* src, and then setting dst to the bounds of those points.
*
* @param dst Where the transformed rectangle is written.
* @param src The original rectangle to be transformed.
* @return the result of calling rectStaysRect()
*/
public boolean mapRect(RectF dst, RectF src) {
if (dst == null || src == null) {
throw new NullPointerException();
}
return native_mapRect(native_instance, dst, src);
}
/**
* Apply this matrix to the rectangle, and write the transformed rectangle
* back into it. This is accomplished by transforming the 4 corners of rect,
* and then setting it to the bounds of those points
*
* @param rect The rectangle to transform.
* @return the result of calling rectStaysRect()
*/
public boolean mapRect(RectF rect) {
return mapRect(rect, rect);
}
/**
* Return the mean radius of a circle after it has been mapped by
* this matrix. NOTE: in perspective this value assumes the circle
* has its center at the origin.
*/
public float mapRadius(float radius) {
return native_mapRadius(native_instance, radius);
}
/** Copy 9 values from the matrix into the array.
*/
public void getValues(float[] values) {
if (values.length < 9) {
throw new ArrayIndexOutOfBoundsException();
}
native_getValues(native_instance, values);
}
/** Copy 9 values from the array into the matrix.
Depending on the implementation of Matrix, these may be
transformed into 16.16 integers in the Matrix, such that
a subsequent call to getValues() will not yield exactly
the same values.
*/
public void setValues(float[] values) {
if (values.length < 9) {
throw new ArrayIndexOutOfBoundsException();
}
native_setValues(native_instance, values);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder(64);
sb.append("Matrix{");
toShortString(sb);
sb.append('}');
return sb.toString();
}
public String toShortString() {
StringBuilder sb = new StringBuilder(64);
toShortString(sb);
return sb.toString();
}
/**
* @hide
*/
public void toShortString(StringBuilder sb) {
float[] values = new float[9];
getValues(values);
sb.append('[');
sb.append(values[0]); sb.append(", "); sb.append(values[1]); sb.append(", ");
sb.append(values[2]); sb.append("][");
sb.append(values[3]); sb.append(", "); sb.append(values[4]); sb.append(", ");
sb.append(values[5]); sb.append("][");
sb.append(values[6]); sb.append(", "); sb.append(values[7]); sb.append(", ");
sb.append(values[8]); sb.append(']');
}
/**
* Print short string, to optimize dumping.
* @hide
*/
public void printShortString(PrintWriter pw) {
float[] values = new float[9];
getValues(values);
pw.print('[');
pw.print(values[0]); pw.print(", "); pw.print(values[1]); pw.print(", ");
pw.print(values[2]); pw.print("][");
pw.print(values[3]); pw.print(", "); pw.print(values[4]); pw.print(", ");
pw.print(values[5]); pw.print("][");
pw.print(values[6]); pw.print(", "); pw.print(values[7]); pw.print(", ");
pw.print(values[8]); pw.print(']');
}
@Override
protected void finalize() throws Throwable {
try {
finalizer(native_instance);
native_instance = 0; // Other finalizers can still call us.
} finally {
super.finalize();
}
}
/*package*/ final long ni() {
return native_instance;
}
private static native long native_create(long native_src_or_zero);
private static native boolean native_isIdentity(long native_object);
private static native boolean native_isAffine(long native_object);
private static native boolean native_rectStaysRect(long native_object);
private static native void native_reset(long native_object);
private static native void native_set(long native_object,
long native_other);
private static native void native_setTranslate(long native_object,
float dx, float dy);
private static native void native_setScale(long native_object,
float sx, float sy, float px, float py);
private static native void native_setScale(long native_object,
float sx, float sy);
private static native void native_setRotate(long native_object,
float degrees, float px, float py);
private static native void native_setRotate(long native_object,
float degrees);
private static native void native_setSinCos(long native_object,
float sinValue, float cosValue, float px, float py);
private static native void native_setSinCos(long native_object,
float sinValue, float cosValue);
private static native void native_setSkew(long native_object,
float kx, float ky, float px, float py);
private static native void native_setSkew(long native_object,
float kx, float ky);
private static native void native_setConcat(long native_object,
long native_a,
long native_b);
private static native void native_preTranslate(long native_object,
float dx, float dy);
private static native void native_preScale(long native_object,
float sx, float sy, float px, float py);
private static native void native_preScale(long native_object,
float sx, float sy);
private static native void native_preRotate(long native_object,
float degrees, float px, float py);
private static native void native_preRotate(long native_object,
float degrees);
private static native void native_preSkew(long native_object,
float kx, float ky, float px, float py);
private static native void native_preSkew(long native_object,
float kx, float ky);
private static native void native_preConcat(long native_object,
long native_other_matrix);
private static native void native_postTranslate(long native_object,
float dx, float dy);
private static native void native_postScale(long native_object,
float sx, float sy, float px, float py);
private static native void native_postScale(long native_object,
float sx, float sy);
private static native void native_postRotate(long native_object,
float degrees, float px, float py);
private static native void native_postRotate(long native_object,
float degrees);
private static native void native_postSkew(long native_object,
float kx, float ky, float px, float py);
private static native void native_postSkew(long native_object,
float kx, float ky);
private static native void native_postConcat(long native_object,
long native_other_matrix);
private static native boolean native_setRectToRect(long native_object,
RectF src, RectF dst, int stf);
private static native boolean native_setPolyToPoly(long native_object,
float[] src, int srcIndex, float[] dst, int dstIndex, int pointCount);
private static native boolean native_invert(long native_object,
long native_inverse);
private static native void native_mapPoints(long native_object,
float[] dst, int dstIndex, float[] src, int srcIndex,
int ptCount, boolean isPts);
private static native boolean native_mapRect(long native_object,
RectF dst, RectF src);
private static native float native_mapRadius(long native_object,
float radius);
private static native void native_getValues(long native_object,
float[] values);
private static native void native_setValues(long native_object,
float[] values);
private static native boolean native_equals(long native_a, long native_b);
private static native void finalizer(long native_instance);
}