| /* |
| * Copyright (c) 2007, 2014, 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. |
| * <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. |
| * <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 java.awt.RenderingHints#VALUE_STROKE_NORMALIZE} hint if the |
| * {@code normalize} boolean parameter is true. |
| * Adjustments are made to the path as appropriate for the |
| * {@link java.awt.RenderingHints#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] = 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 {@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 |
| */ |
| 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"); |
| } |
| } |
| } |
| |