-
PiscesRenderingEngine
-
NormMode
-
createStrokedShape(Shape, float, int, int, float, float[], float): Shape
-
strokeTo(Shape, AffineTransform, BasicStroke, boolean, boolean, boolean, PathConsumer2D): void
-
strokeTo(Shape, AffineTransform, BasicStroke, boolean, NormMode, boolean, PathConsumer2D): void
-
userSpaceLineWidth(AffineTransform, float): float
-
strokeTo(Shape, AffineTransform, float, NormMode, int, int, float, float[], float, PathConsumer2D): void
-
nearZero(double, int): boolean
-
NormalizingPathIterator
-
pathTo(PathIterator, PathConsumer2D): void
-
getAATileGenerator(Shape, AffineTransform, Region, BasicStroke, boolean, boolean, int[]): AATileGenerator
-
getAATileGenerator(double, double, double, double, double, double, double, double, Region, int[]): AATileGenerator
-
getMinimumAAPenSize(): float
-
static class initializer
-
/*
* Copyright (c) 2007, 2011, 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 sun.java2d.pisces;
import java.awt.Shape;
import java.awt.BasicStroke;
import java.awt.geom.Path2D;
import java.awt.geom.AffineTransform;
import java.awt.geom.PathIterator;
import sun.awt.geom.PathConsumer2D;
import sun.java2d.pipe.Region;
import sun.java2d.pipe.RenderingEngine;
import sun.java2d.pipe.AATileGenerator;
public class PiscesRenderingEngine extends RenderingEngine {
private static enum NormMode {OFF, ON_NO_AA, ON_WITH_AA}
Create a widened path as specified by the parameters.
The specified src Shape is widened according to the specified attribute parameters as per the BasicStroke specification.
Params: - src – the source path to be widened
- width – the width of the widened path as per
BasicStroke - caps – the end cap decorations as per
BasicStroke - join – the segment join decorations as per
BasicStroke - miterlimit – the miter limit as per
BasicStroke - dashes – the dash length array as per
BasicStroke - dashphase – the initial dash phase as per
BasicStroke
Returns: the widened path stored in a new Shape object Since: 1.7
/**
* Create a widened path as specified by the parameters.
* <p>
* The specified {@code src} {@link Shape} is widened according
* to the specified attribute parameters as per the
* {@link BasicStroke} specification.
*
* @param src the source path to be widened
* @param width the width of the widened path as per {@code BasicStroke}
* @param caps the end cap decorations as per {@code BasicStroke}
* @param join the segment join decorations as per {@code BasicStroke}
* @param miterlimit the miter limit as per {@code BasicStroke}
* @param dashes the dash length array as per {@code BasicStroke}
* @param dashphase the initial dash phase as per {@code BasicStroke}
* @return the widened path stored in a new {@code Shape} object
* @since 1.7
*/
public Shape createStrokedShape(Shape src,
float width,
int caps,
int join,
float miterlimit,
float dashes[],
float dashphase)
{
final Path2D p2d = new Path2D.Float();
strokeTo(src,
null,
width,
NormMode.OFF,
caps,
join,
miterlimit,
dashes,
dashphase,
new PathConsumer2D() {
public void moveTo(float x0, float y0) {
p2d.moveTo(x0, y0);
}
public void lineTo(float x1, float y1) {
p2d.lineTo(x1, y1);
}
public void closePath() {
p2d.closePath();
}
public void pathDone() {}
public void curveTo(float x1, float y1,
float x2, float y2,
float x3, float y3) {
p2d.curveTo(x1, y1, x2, y2, x3, y3);
}
public void quadTo(float x1, float y1, float x2, float y2) {
p2d.quadTo(x1, y1, x2, y2);
}
public long getNativeConsumer() {
throw new InternalError("Not using a native peer");
}
});
return p2d;
}
Sends the geometry for a widened path as specified by the parameters
to the specified consumer.
The specified src Shape is widened according to the parameters specified by the BasicStroke object. Adjustments are made to the path as appropriate for the VALUE_STROKE_NORMALIZE hint if the normalize boolean parameter is true. Adjustments are made to the path as appropriate for the VALUE_ANTIALIAS_ON hint if the antialias boolean parameter is true.
The geometry of the widened path is forwarded to the indicated PathConsumer2D object as it is calculated.
Params: - src – the source path to be widened
- bs – the
BasicSroke object specifying the decorations to be applied to the widened path - normalize – indicates whether stroke normalization should
be applied
- antialias – indicates whether or not adjustments appropriate
to antialiased rendering should be applied
- consumer – the
PathConsumer2D instance to forward the widened geometry to
Since: 1.7
/**
* Sends the geometry for a widened path as specified by the parameters
* to the specified consumer.
* <p>
* The specified {@code src} {@link Shape} is widened according
* to the parameters specified by the {@link BasicStroke} object.
* Adjustments are made to the path as appropriate for the
* {@link VALUE_STROKE_NORMALIZE} hint if the {@code normalize}
* boolean parameter is true.
* Adjustments are made to the path as appropriate for the
* {@link VALUE_ANTIALIAS_ON} hint if the {@code antialias}
* boolean parameter is true.
* <p>
* The geometry of the widened path is forwarded to the indicated
* {@link PathConsumer2D} object as it is calculated.
*
* @param src the source path to be widened
* @param bs the {@code BasicSroke} object specifying the
* decorations to be applied to the widened path
* @param normalize indicates whether stroke normalization should
* be applied
* @param antialias indicates whether or not adjustments appropriate
* to antialiased rendering should be applied
* @param consumer the {@code PathConsumer2D} instance to forward
* the widened geometry to
* @since 1.7
*/
public void strokeTo(Shape src,
AffineTransform at,
BasicStroke bs,
boolean thin,
boolean normalize,
boolean antialias,
final PathConsumer2D consumer)
{
NormMode norm = (normalize) ?
((antialias) ? NormMode.ON_WITH_AA : NormMode.ON_NO_AA)
: NormMode.OFF;
strokeTo(src, at, bs, thin, norm, antialias, consumer);
}
void strokeTo(Shape src,
AffineTransform at,
BasicStroke bs,
boolean thin,
NormMode normalize,
boolean antialias,
PathConsumer2D pc2d)
{
float lw;
if (thin) {
if (antialias) {
lw = userSpaceLineWidth(at, 0.5f);
} else {
lw = userSpaceLineWidth(at, 1.0f);
}
} else {
lw = bs.getLineWidth();
}
strokeTo(src,
at,
lw,
normalize,
bs.getEndCap(),
bs.getLineJoin(),
bs.getMiterLimit(),
bs.getDashArray(),
bs.getDashPhase(),
pc2d);
}
private float userSpaceLineWidth(AffineTransform at, float lw) {
double widthScale;
if ((at.getType() & (AffineTransform.TYPE_GENERAL_TRANSFORM |
AffineTransform.TYPE_GENERAL_SCALE)) != 0) {
widthScale = Math.sqrt(at.getDeterminant());
} else {
/* First calculate the "maximum scale" of this transform. */
double A = at.getScaleX(); // m00
double C = at.getShearX(); // m01
double B = at.getShearY(); // m10
double D = at.getScaleY(); // m11
/*
* Given a 2 x 2 affine matrix [ A B ] such that
* [ C D ]
* v' = [x' y'] = [Ax + Cy, Bx + Dy], we want to
* find the maximum magnitude (norm) of the vector v'
* with the constraint (x^2 + y^2 = 1).
* The equation to maximize is
* |v'| = sqrt((Ax+Cy)^2+(Bx+Dy)^2)
* or |v'| = sqrt((AA+BB)x^2 + 2(AC+BD)xy + (CC+DD)y^2).
* Since sqrt is monotonic we can maximize |v'|^2
* instead and plug in the substitution y = sqrt(1 - x^2).
* Trigonometric equalities can then be used to get
* rid of most of the sqrt terms.
*/
double EA = A*A + B*B; // x^2 coefficient
double EB = 2*(A*C + B*D); // xy coefficient
double EC = C*C + D*D; // y^2 coefficient
/*
* There is a lot of calculus omitted here.
*
* Conceptually, in the interests of understanding the
* terms that the calculus produced we can consider
* that EA and EC end up providing the lengths along
* the major axes and the hypot term ends up being an
* adjustment for the additional length along the off-axis
* angle of rotated or sheared ellipses as well as an
* adjustment for the fact that the equation below
* averages the two major axis lengths. (Notice that
* the hypot term contains a part which resolves to the
* difference of these two axis lengths in the absence
* of rotation.)
*
* In the calculus, the ratio of the EB and (EA-EC) terms
* ends up being the tangent of 2*theta where theta is
* the angle that the long axis of the ellipse makes
* with the horizontal axis. Thus, this equation is
* calculating the length of the hypotenuse of a triangle
* along that axis.
*/
double hypot = Math.sqrt(EB*EB + (EA-EC)*(EA-EC));
/* sqrt omitted, compare to squared limits below. */
double widthsquared = ((EA + EC + hypot)/2.0);
widthScale = Math.sqrt(widthsquared);
}
return (float) (lw / widthScale);
}
void strokeTo(Shape src,
AffineTransform at,
float width,
NormMode normalize,
int caps,
int join,
float miterlimit,
float dashes[],
float dashphase,
PathConsumer2D pc2d)
{
// We use strokerat and outat so that in Stroker and Dasher we can work only
// with the pre-transformation coordinates. This will repeat a lot of
// computations done in the path iterator, but the alternative is to
// work with transformed paths and compute untransformed coordinates
// as needed. This would be faster but I do not think the complexity
// of working with both untransformed and transformed coordinates in
// the same code is worth it.
// However, if a path's width is constant after a transformation,
// we can skip all this untransforming.
// If normalization is off we save some transformations by not
// transforming the input to pisces. Instead, we apply the
// transformation after the path processing has been done.
// We can't do this if normalization is on, because it isn't a good
// idea to normalize before the transformation is applied.
AffineTransform strokerat = null;
AffineTransform outat = null;
PathIterator pi = null;
if (at != null && !at.isIdentity()) {
final double a = at.getScaleX();
final double b = at.getShearX();
final double c = at.getShearY();
final double d = at.getScaleY();
final double det = a * d - c * b;
if (Math.abs(det) <= 2 * Float.MIN_VALUE) {
// this rendering engine takes one dimensional curves and turns
// them into 2D shapes by giving them width.
// However, if everything is to be passed through a singular
// transformation, these 2D shapes will be squashed down to 1D
// again so, nothing can be drawn.
// Every path needs an initial moveTo and a pathDone. If these
// are not there this causes a SIGSEGV in libawt.so (at the time
// of writing of this comment (September 16, 2010)). Actually,
// I am not sure if the moveTo is necessary to avoid the SIGSEGV
// but the pathDone is definitely needed.
pc2d.moveTo(0, 0);
pc2d.pathDone();
return;
}
// If the transform is a constant multiple of an orthogonal transformation
// then every length is just multiplied by a constant, so we just
// need to transform input paths to stroker and tell stroker
// the scaled width. This condition is satisfied if
// a*b == -c*d && a*a+c*c == b*b+d*d. In the actual check below, we
// leave a bit of room for error.
if (nearZero(a*b + c*d, 2) && nearZero(a*a+c*c - (b*b+d*d), 2)) {
double scale = Math.sqrt(a*a + c*c);
if (dashes != null) {
dashes = java.util.Arrays.copyOf(dashes, dashes.length);
for (int i = 0; i < dashes.length; i++) {
dashes[i] = (float)(scale * dashes[i]);
}
dashphase = (float)(scale * dashphase);
}
width = (float)(scale * width);
pi = src.getPathIterator(at);
if (normalize != NormMode.OFF) {
pi = new NormalizingPathIterator(pi, normalize);
}
// by now strokerat == null && outat == null. Input paths to
// stroker (and maybe dasher) will have the full transform at
// applied to them and nothing will happen to the output paths.
} else {
if (normalize != NormMode.OFF) {
strokerat = at;
pi = src.getPathIterator(at);
pi = new NormalizingPathIterator(pi, normalize);
// by now strokerat == at && outat == null. Input paths to
// stroker (and maybe dasher) will have the full transform at
// applied to them, then they will be normalized, and then
// the inverse of *only the non translation part of at* will
// be applied to the normalized paths. This won't cause problems
// in stroker, because, suppose at = T*A, where T is just the
// translation part of at, and A is the rest. T*A has already
// been applied to Stroker/Dasher's input. Then Ainv will be
// applied. Ainv*T*A is not equal to T, but it is a translation,
// which means that none of stroker's assumptions about its
// input will be violated. After all this, A will be applied
// to stroker's output.
} else {
outat = at;
pi = src.getPathIterator(null);
// outat == at && strokerat == null. This is because if no
// normalization is done, we can just apply all our
// transformations to stroker's output.
}
}
} else {
// either at is null or it's the identity. In either case
// we don't transform the path.
pi = src.getPathIterator(null);
if (normalize != NormMode.OFF) {
pi = new NormalizingPathIterator(pi, normalize);
}
}
// by now, at least one of outat and strokerat will be null. Unless at is not
// a constant multiple of an orthogonal transformation, they will both be
// null. In other cases, outat == at if normalization is off, and if
// normalization is on, strokerat == at.
pc2d = TransformingPathConsumer2D.transformConsumer(pc2d, outat);
pc2d = TransformingPathConsumer2D.deltaTransformConsumer(pc2d, strokerat);
pc2d = new Stroker(pc2d, width, caps, join, miterlimit);
if (dashes != null) {
pc2d = new Dasher(pc2d, dashes, dashphase);
}
pc2d = TransformingPathConsumer2D.inverseDeltaTransformConsumer(pc2d, strokerat);
pathTo(pi, pc2d);
}
private static boolean nearZero(double num, int nulps) {
return Math.abs(num) < nulps * Math.ulp(num);
}
private static class NormalizingPathIterator implements PathIterator {
private final PathIterator src;
// the adjustment applied to the current position.
private float curx_adjust, cury_adjust;
// the adjustment applied to the last moveTo position.
private float movx_adjust, movy_adjust;
// constants used in normalization computations
private final float lval, rval;
NormalizingPathIterator(PathIterator src, NormMode mode) {
this.src = src;
switch (mode) {
case ON_NO_AA:
// round to nearest (0.25, 0.25) pixel
lval = rval = 0.25f;
break;
case ON_WITH_AA:
// round to nearest pixel center
lval = 0f;
rval = 0.5f;
break;
case OFF:
throw new InternalError("A NormalizingPathIterator should " +
"not be created if no normalization is being done");
default:
throw new InternalError("Unrecognized normalization mode");
}
}
public int currentSegment(float[] coords) {
int type = src.currentSegment(coords);
int lastCoord;
switch(type) {
case PathIterator.SEG_CUBICTO:
lastCoord = 4;
break;
case PathIterator.SEG_QUADTO:
lastCoord = 2;
break;
case PathIterator.SEG_LINETO:
case PathIterator.SEG_MOVETO:
lastCoord = 0;
break;
case PathIterator.SEG_CLOSE:
// we don't want to deal with this case later. We just exit now
curx_adjust = movx_adjust;
cury_adjust = movy_adjust;
return type;
default:
throw new InternalError("Unrecognized curve type");
}
// normalize endpoint
float x_adjust = (float)Math.floor(coords[lastCoord] + lval) +
rval - coords[lastCoord];
float y_adjust = (float)Math.floor(coords[lastCoord+1] + lval) +
rval - coords[lastCoord + 1];
coords[lastCoord ] += x_adjust;
coords[lastCoord + 1] += y_adjust;
// now that the end points are done, normalize the control points
switch(type) {
case PathIterator.SEG_CUBICTO:
coords[0] += curx_adjust;
coords[1] += cury_adjust;
coords[2] += x_adjust;
coords[3] += y_adjust;
break;
case PathIterator.SEG_QUADTO:
coords[0] += (curx_adjust + x_adjust) / 2;
coords[1] += (cury_adjust + y_adjust) / 2;
break;
case PathIterator.SEG_LINETO:
break;
case PathIterator.SEG_MOVETO:
movx_adjust = x_adjust;
movy_adjust = y_adjust;
break;
case PathIterator.SEG_CLOSE:
throw new InternalError("This should be handled earlier.");
}
curx_adjust = x_adjust;
cury_adjust = y_adjust;
return type;
}
public int currentSegment(double[] coords) {
float[] tmp = new float[6];
int type = this.currentSegment(tmp);
for (int i = 0; i < 6; i++) {
coords[i] = (float) tmp[i];
}
return type;
}
public int getWindingRule() {
return src.getWindingRule();
}
public boolean isDone() {
return src.isDone();
}
public void next() {
src.next();
}
}
static void pathTo(PathIterator pi, PathConsumer2D pc2d) {
RenderingEngine.feedConsumer(pi, pc2d);
pc2d.pathDone();
}
Construct an antialiased tile generator for the given shape with the given rendering attributes and store the bounds of the tile iteration in the bbox parameter. The at parameter specifies a transform that should affect both the shape and the BasicStroke attributes. The clip parameter specifies the current clip in effect in device coordinates and can be used to prune the data for the operation, but the renderer is not required to perform any clipping. If the BasicStroke parameter is null then the shape should be filled as is, otherwise the attributes of the BasicStroke should be used to specify a draw operation. The thin parameter indicates whether or not the transformed BasicStroke represents coordinates smaller than the minimum resolution of the antialiasing rasterizer as specified by the getMinimumAAPenWidth() method. Upon returning, this method will fill the bbox parameter with 4 values indicating the bounds of the iteration of the tile generator. The iteration order of the tiles will be as specified by the pseudo-code:
for (y = bbox[1]; y < bbox[3]; y += tileheight) {
for (x = bbox[0]; x < bbox[2]; x += tilewidth) {
}
}
If there is no output to be rendered, this method may return
null.
Params: - s – the shape to be rendered (fill or draw)
- at – the transform to be applied to the shape and the
stroke attributes
- clip – the current clip in effect in device coordinates
- bs – if non-null, a
BasicStroke whose attributes should be applied to this operation - thin – true if the transformed stroke attributes are smaller
than the minimum dropout pen width
- normalize – true if the
VALUE_STROKE_NORMALIZE RenderingHint is in effect - bbox – returns the bounds of the iteration
Returns: the AATileGenerator instance to be consulted for tile coverages, or null if there is no output to render Since: 1.7
/**
* Construct an antialiased tile generator for the given shape with
* the given rendering attributes and store the bounds of the tile
* iteration in the bbox parameter.
* The {@code at} parameter specifies a transform that should affect
* both the shape and the {@code BasicStroke} attributes.
* The {@code clip} parameter specifies the current clip in effect
* in device coordinates and can be used to prune the data for the
* operation, but the renderer is not required to perform any
* clipping.
* If the {@code BasicStroke} parameter is null then the shape
* should be filled as is, otherwise the attributes of the
* {@code BasicStroke} should be used to specify a draw operation.
* The {@code thin} parameter indicates whether or not the
* transformed {@code BasicStroke} represents coordinates smaller
* than the minimum resolution of the antialiasing rasterizer as
* specified by the {@code getMinimumAAPenWidth()} method.
* <p>
* Upon returning, this method will fill the {@code bbox} parameter
* with 4 values indicating the bounds of the iteration of the
* tile generator.
* The iteration order of the tiles will be as specified by the
* pseudo-code:
* <pre>
* for (y = bbox[1]; y < bbox[3]; y += tileheight) {
* for (x = bbox[0]; x < bbox[2]; x += tilewidth) {
* }
* }
* </pre>
* If there is no output to be rendered, this method may return
* null.
*
* @param s the shape to be rendered (fill or draw)
* @param at the transform to be applied to the shape and the
* stroke attributes
* @param clip the current clip in effect in device coordinates
* @param bs if non-null, a {@code BasicStroke} whose attributes
* should be applied to this operation
* @param thin true if the transformed stroke attributes are smaller
* than the minimum dropout pen width
* @param normalize true if the {@code VALUE_STROKE_NORMALIZE}
* {@code RenderingHint} is in effect
* @param bbox returns the bounds of the iteration
* @return the {@code AATileGenerator} instance to be consulted
* for tile coverages, or null if there is no output to render
* @since 1.7
*/
public AATileGenerator getAATileGenerator(Shape s,
AffineTransform at,
Region clip,
BasicStroke bs,
boolean thin,
boolean normalize,
int bbox[])
{
Renderer r;
NormMode norm = (normalize) ? NormMode.ON_WITH_AA : NormMode.OFF;
if (bs == null) {
PathIterator pi;
if (normalize) {
pi = new NormalizingPathIterator(s.getPathIterator(at), norm);
} else {
pi = s.getPathIterator(at);
}
r = new Renderer(3, 3,
clip.getLoX(), clip.getLoY(),
clip.getWidth(), clip.getHeight(),
pi.getWindingRule());
pathTo(pi, r);
} else {
r = new Renderer(3, 3,
clip.getLoX(), clip.getLoY(),
clip.getWidth(), clip.getHeight(),
PathIterator.WIND_NON_ZERO);
strokeTo(s, at, bs, thin, norm, true, r);
}
r.endRendering();
PiscesTileGenerator ptg = new PiscesTileGenerator(r, r.MAX_AA_ALPHA);
ptg.getBbox(bbox);
return ptg;
}
public AATileGenerator getAATileGenerator(double x, double y,
double dx1, double dy1,
double dx2, double dy2,
double lw1, double lw2,
Region clip,
int bbox[])
{
// REMIND: Deal with large coordinates!
double ldx1, ldy1, ldx2, ldy2;
boolean innerpgram = (lw1 > 0 && lw2 > 0);
if (innerpgram) {
ldx1 = dx1 * lw1;
ldy1 = dy1 * lw1;
ldx2 = dx2 * lw2;
ldy2 = dy2 * lw2;
x -= (ldx1 + ldx2) / 2.0;
y -= (ldy1 + ldy2) / 2.0;
dx1 += ldx1;
dy1 += ldy1;
dx2 += ldx2;
dy2 += ldy2;
if (lw1 > 1 && lw2 > 1) {
// Inner parallelogram was entirely consumed by stroke...
innerpgram = false;
}
} else {
ldx1 = ldy1 = ldx2 = ldy2 = 0;
}
Renderer r = new Renderer(3, 3,
clip.getLoX(), clip.getLoY(),
clip.getWidth(), clip.getHeight(),
PathIterator.WIND_EVEN_ODD);
r.moveTo((float) x, (float) y);
r.lineTo((float) (x+dx1), (float) (y+dy1));
r.lineTo((float) (x+dx1+dx2), (float) (y+dy1+dy2));
r.lineTo((float) (x+dx2), (float) (y+dy2));
r.closePath();
if (innerpgram) {
x += ldx1 + ldx2;
y += ldy1 + ldy2;
dx1 -= 2.0 * ldx1;
dy1 -= 2.0 * ldy1;
dx2 -= 2.0 * ldx2;
dy2 -= 2.0 * ldy2;
r.moveTo((float) x, (float) y);
r.lineTo((float) (x+dx1), (float) (y+dy1));
r.lineTo((float) (x+dx1+dx2), (float) (y+dy1+dy2));
r.lineTo((float) (x+dx2), (float) (y+dy2));
r.closePath();
}
r.pathDone();
r.endRendering();
PiscesTileGenerator ptg = new PiscesTileGenerator(r, r.MAX_AA_ALPHA);
ptg.getBbox(bbox);
return ptg;
}
Returns the minimum pen width that the antialiasing rasterizer
can represent without dropouts occurring.
Since: 1.7
/**
* Returns the minimum pen width that the antialiasing rasterizer
* can represent without dropouts occurring.
* @since 1.7
*/
public float getMinimumAAPenSize() {
return 0.5f;
}
static {
if (PathIterator.WIND_NON_ZERO != Renderer.WIND_NON_ZERO ||
PathIterator.WIND_EVEN_ODD != Renderer.WIND_EVEN_ODD ||
BasicStroke.JOIN_MITER != Stroker.JOIN_MITER ||
BasicStroke.JOIN_ROUND != Stroker.JOIN_ROUND ||
BasicStroke.JOIN_BEVEL != Stroker.JOIN_BEVEL ||
BasicStroke.CAP_BUTT != Stroker.CAP_BUTT ||
BasicStroke.CAP_ROUND != Stroker.CAP_ROUND ||
BasicStroke.CAP_SQUARE != Stroker.CAP_SQUARE)
{
throw new InternalError("mismatched renderer constants");
}
}
}