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modules/javafx.graphics/src/main/java/com/sun/marlin/DDasher.java
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@@ -24,10 +24,12 @@
*/
package com.sun.marlin;
import java.util.Arrays;
+import com.sun.marlin.DTransformingPathConsumer2D.CurveBasicMonotonizer;
+import com.sun.marlin.DTransformingPathConsumer2D.CurveClipSplitter;
/**
* The <code>DDasher</code> class takes a series of linear commands
* (<code>moveTo</code>, <code>lineTo</code>, <code>close</code> and
* <code>end</code>) and breaks them into smaller segments according to a
@@ -38,12 +40,13 @@
* semantics are unclear.
*
*/
public final class DDasher implements DPathConsumer2D, MarlinConst {
- static final int REC_LIMIT = 4;
- static final double ERR = 0.01d;
+ /* huge circle with radius ~ 2E9 only needs 12 subdivision levels */
+ static final int REC_LIMIT = 16;
+ static final double CURVE_LEN_ERR = MarlinProperties.getCurveLengthError(); // 0.01 initial
static final double MIN_T_INC = 1.0d / (1 << REC_LIMIT);
// More than 24 bits of mantissa means we can no longer accurately
// measure the number of times cycled through the dash array so we
// punt and override the phase to just be 0 past that point.
@@ -61,27 +64,52 @@
private int idx;
private boolean dashOn;
private double phase;
- private double sx, sy;
- private double x0, y0;
+ // The starting point of the path
+ private double sx0, sy0;
+ // the current point
+ private double cx0, cy0;
// temporary storage for the current curve
private final double[] curCurvepts;
// per-thread renderer context
final DRendererContext rdrCtx;
// flag to recycle dash array copy
boolean recycleDashes;
+ // We don't emit the first dash right away. If we did, caps would be
+ // drawn on it, but we need joins to be drawn if there's a closePath()
+ // So, we store the path elements that make up the first dash in the
+ // buffer below.
+ private double[] firstSegmentsBuffer; // dynamic array
+ private int firstSegidx;
+
// dashes ref (dirty)
final DoubleArrayCache.Reference dashes_ref;
// firstSegmentsBuffer ref (dirty)
final DoubleArrayCache.Reference firstSegmentsBuffer_ref;
+ // Bounds of the drawing region, at pixel precision.
+ private double[] clipRect;
+
+ // the outcode of the current point
+ private int cOutCode = 0;
+
+ private boolean subdivide = DO_CLIP_SUBDIVIDER;
+
+ private final LengthIterator li = new LengthIterator();
+
+ private final CurveClipSplitter curveSplitter;
+
+ private double cycleLen;
+ private boolean outside;
+ private double totalSkipLen;
+
/**
* Constructs a <code>DDasher</code>.
* @param rdrCtx per-thread renderer context
*/
DDasher(final DRendererContext rdrCtx) {
@@ -93,10 +121,12 @@
firstSegmentsBuffer = firstSegmentsBuffer_ref.initial;
// we need curCurvepts to be able to contain 2 curves because when
// dashing curves, we need to subdivide it
curCurvepts = new double[8 * 2];
+
+ this.curveSplitter = rdrCtx.curveClipSplitter;
}
/**
* Initialize the <code>DDasher</code>.
*
@@ -119,10 +149,12 @@
// note: BasicStroke constructor checks dash elements and sum > 0
double sum = 0.0d;
for (int i = 0; i < dashLen; i++) {
sum += dash[i];
}
+ this.cycleLen = sum;
+
double cycles = phase / sum;
if (phase < 0.0d) {
if (-cycles >= MAX_CYCLES) {
phase = 0.0d;
} else {
@@ -167,10 +199,16 @@
this.needsMoveTo = false;
this.firstSegidx = 0;
this.recycleDashes = recycleDashes;
+ if (rdrCtx.doClip) {
+ this.clipRect = rdrCtx.clipRect;
+ } else {
+ this.clipRect = null;
+ this.cOutCode = 0;
+ }
return this; // fluent API
}
/**
* Disposes this dasher:
@@ -204,37 +242,46 @@
}
@Override
public void moveTo(final double x0, final double y0) {
if (firstSegidx != 0) {
- out.moveTo(sx, sy);
+ out.moveTo(sx0, sy0);
emitFirstSegments();
}
- needsMoveTo = true;
+ this.needsMoveTo = true;
this.idx = startIdx;
this.dashOn = this.startDashOn;
this.phase = this.startPhase;
- this.sx = x0;
- this.sy = y0;
- this.x0 = x0;
- this.y0 = y0;
+ this.cx0 = x0;
+ this.cy0 = y0;
+
+ // update starting point:
+ this.sx0 = x0;
+ this.sy0 = y0;
this.starting = true;
+
+ if (clipRect != null) {
+ final int outcode = DHelpers.outcode(x0, y0, clipRect);
+ this.cOutCode = outcode;
+ this.outside = false;
+ this.totalSkipLen = 0.0d;
+ }
}
private void emitSeg(double[] buf, int off, int type) {
switch (type) {
+ case 4:
+ out.lineTo(buf[off], buf[off + 1]);
+ return;
case 8:
- out.curveTo(buf[off+0], buf[off+1],
- buf[off+2], buf[off+3],
- buf[off+4], buf[off+5]);
+ out.curveTo(buf[off ], buf[off + 1],
+ buf[off + 2], buf[off + 3],
+ buf[off + 4], buf[off + 5]);
return;
case 6:
- out.quadTo(buf[off+0], buf[off+1],
- buf[off+2], buf[off+3]);
- return;
- case 4:
- out.lineTo(buf[off], buf[off+1]);
+ out.quadTo(buf[off ], buf[off + 1],
+ buf[off + 2], buf[off + 3]);
return;
default:
}
}
@@ -246,16 +293,10 @@
emitSeg(fSegBuf, i + 1, type);
i += (type - 1);
}
firstSegidx = 0;
}
- // We don't emit the first dash right away. If we did, caps would be
- // drawn on it, but we need joins to be drawn if there's a closePath()
- // So, we store the path elements that make up the first dash in the
- // buffer below.
- private double[] firstSegmentsBuffer; // dynamic array
- private int firstSegidx;
// precondition: pts must be in relative coordinates (relative to x0,y0)
private void goTo(final double[] pts, final int off, final int type,
final boolean on)
{
@@ -267,23 +308,23 @@
if (starting) {
goTo_starting(pts, off, type);
} else {
if (needsMoveTo) {
needsMoveTo = false;
- out.moveTo(x0, y0);
+ out.moveTo(cx0, cy0);
}
emitSeg(pts, off, type);
}
} else {
if (starting) {
// low probability test (hotspot)
starting = false;
}
needsMoveTo = true;
}
- this.x0 = x;
- this.y0 = y;
+ this.cx0 = x;
+ this.cy0 = y;
}
private void goTo_starting(final double[] pts, final int off, final int type) {
int len = type - 1; // - 2 + 1
int segIdx = firstSegidx;
@@ -305,14 +346,60 @@
firstSegidx = segIdx + len;
}
@Override
public void lineTo(final double x1, final double y1) {
- final double dx = x1 - x0;
- final double dy = y1 - y0;
+ final int outcode0 = this.cOutCode;
+
+ if (clipRect != null) {
+ final int outcode1 = DHelpers.outcode(x1, y1, clipRect);
+
+ // Should clip
+ final int orCode = (outcode0 | outcode1);
+
+ if (orCode != 0) {
+ final int sideCode = outcode0 & outcode1;
+
+ // basic rejection criteria:
+ if (sideCode == 0) {
+ // ovelap clip:
+ if (subdivide) {
+ // avoid reentrance
+ subdivide = false;
+ // subdivide curve => callback with subdivided parts:
+ boolean ret = curveSplitter.splitLine(cx0, cy0, x1, y1,
+ orCode, this);
+ // reentrance is done:
+ subdivide = true;
+ if (ret) {
+ return;
+ }
+ }
+ // already subdivided so render it
+ } else {
+ this.cOutCode = outcode1;
+ skipLineTo(x1, y1);
+ return;
+ }
+ }
+
+ this.cOutCode = outcode1;
+
+ if (this.outside) {
+ this.outside = false;
+ // Adjust current index, phase & dash:
+ skipLen();
+ }
+ }
+ _lineTo(x1, y1);
+ }
+
+ private void _lineTo(final double x1, final double y1) {
+ final double dx = x1 - cx0;
+ final double dy = y1 - cy0;
- double len = dx*dx + dy*dy;
+ double len = dx * dx + dy * dy;
if (len == 0.0d) {
return;
}
len = Math.sqrt(len);
@@ -327,12 +414,11 @@
int _idx = idx;
boolean _dashOn = dashOn;
double _phase = phase;
- double leftInThisDashSegment;
- double d, dashdx, dashdy, p;
+ double leftInThisDashSegment, d;
while (true) {
d = _dash[_idx];
leftInThisDashSegment = d - _phase;
@@ -349,51 +435,118 @@
if (len == leftInThisDashSegment) {
_phase = 0.0d;
_idx = (_idx + 1) % _dashLen;
_dashOn = !_dashOn;
}
-
- // Save local state:
- idx = _idx;
- dashOn = _dashOn;
- phase = _phase;
- return;
+ break;
}
- dashdx = d * cx;
- dashdy = d * cy;
-
if (_phase == 0.0d) {
- _curCurvepts[0] = x0 + dashdx;
- _curCurvepts[1] = y0 + dashdy;
+ _curCurvepts[0] = cx0 + d * cx;
+ _curCurvepts[1] = cy0 + d * cy;
} else {
- p = leftInThisDashSegment / d;
- _curCurvepts[0] = x0 + p * dashdx;
- _curCurvepts[1] = y0 + p * dashdy;
+ _curCurvepts[0] = cx0 + leftInThisDashSegment * cx;
+ _curCurvepts[1] = cy0 + leftInThisDashSegment * cy;
}
goTo(_curCurvepts, 0, 4, _dashOn);
len -= leftInThisDashSegment;
// Advance to next dash segment
_idx = (_idx + 1) % _dashLen;
_dashOn = !_dashOn;
_phase = 0.0d;
}
+ // Save local state:
+ idx = _idx;
+ dashOn = _dashOn;
+ phase = _phase;
}
- // shared instance in DDasher
- private final LengthIterator li = new LengthIterator();
+ private void skipLineTo(final double x1, final double y1) {
+ final double dx = x1 - cx0;
+ final double dy = y1 - cy0;
+
+ double len = dx * dx + dy * dy;
+ if (len != 0.0d) {
+ len = Math.sqrt(len);
+ }
+
+ // Accumulate skipped length:
+ this.outside = true;
+ this.totalSkipLen += len;
+
+ // Fix initial move:
+ this.needsMoveTo = true;
+ this.starting = false;
+
+ this.cx0 = x1;
+ this.cy0 = y1;
+ }
+
+ public void skipLen() {
+ double len = this.totalSkipLen;
+ this.totalSkipLen = 0.0d;
+
+ final double[] _dash = dash;
+ final int _dashLen = this.dashLen;
+
+ int _idx = idx;
+ boolean _dashOn = dashOn;
+ double _phase = phase;
+
+ // -2 to ensure having 2 iterations of the post-loop
+ // to compensate the remaining phase
+ final long fullcycles = (long)Math.floor(len / cycleLen) - 2L;
+
+ if (fullcycles > 0L) {
+ len -= cycleLen * fullcycles;
+
+ final long iterations = fullcycles * _dashLen;
+ _idx = (int) (iterations + _idx) % _dashLen;
+ _dashOn = (iterations + (_dashOn ? 1L : 0L) & 1L) == 1L;
+ }
+
+ double leftInThisDashSegment, d;
+
+ while (true) {
+ d = _dash[_idx];
+ leftInThisDashSegment = d - _phase;
+
+ if (len <= leftInThisDashSegment) {
+ // Advance phase within current dash segment
+ _phase += len;
+
+ // TODO: compare double values using epsilon:
+ if (len == leftInThisDashSegment) {
+ _phase = 0.0d;
+ _idx = (_idx + 1) % _dashLen;
+ _dashOn = !_dashOn;
+ }
+ break;
+ }
+
+ len -= leftInThisDashSegment;
+ // Advance to next dash segment
+ _idx = (_idx + 1) % _dashLen;
+ _dashOn = !_dashOn;
+ _phase = 0.0d;
+ }
+ // Save local state:
+ idx = _idx;
+ dashOn = _dashOn;
+ phase = _phase;
+ }
// preconditions: curCurvepts must be an array of length at least 2 * type,
// that contains the curve we want to dash in the first type elements
private void somethingTo(final int type) {
- if (pointCurve(curCurvepts, type)) {
+ final double[] _curCurvepts = curCurvepts;
+ if (pointCurve(_curCurvepts, type)) {
return;
}
final LengthIterator _li = li;
- final double[] _curCurvepts = curCurvepts;
final double[] _dash = dash;
final int _dashLen = this.dashLen;
_li.initializeIterationOnCurve(_curCurvepts, type);
@@ -401,21 +554,20 @@
boolean _dashOn = dashOn;
double _phase = phase;
// initially the current curve is at curCurvepts[0...type]
int curCurveoff = 0;
- double lastSplitT = 0.0d;
+ double prevT = 0.0d;
double t;
double leftInThisDashSegment = _dash[_idx] - _phase;
while ((t = _li.next(leftInThisDashSegment)) < 1.0d) {
if (t != 0.0d) {
- DHelpers.subdivideAt((t - lastSplitT) / (1.0d - lastSplitT),
+ DHelpers.subdivideAt((t - prevT) / (1.0d - prevT),
_curCurvepts, curCurveoff,
- _curCurvepts, 0,
- _curCurvepts, type, type);
- lastSplitT = t;
+ _curCurvepts, 0, type);
+ prevT = t;
goTo(_curCurvepts, 2, type, _dashOn);
curCurveoff = type;
}
// Advance to next dash segment
_idx = (_idx + 1) % _dashLen;
@@ -439,11 +591,33 @@
// reset LengthIterator:
_li.reset();
}
- private static boolean pointCurve(double[] curve, int type) {
+ private void skipSomethingTo(final int type) {
+ final double[] _curCurvepts = curCurvepts;
+ if (pointCurve(_curCurvepts, type)) {
+ return;
+ }
+ final LengthIterator _li = li;
+
+ _li.initializeIterationOnCurve(_curCurvepts, type);
+
+ // In contrary to somethingTo(),
+ // just estimate properly the curve length:
+ final double len = _li.totalLength();
+
+ // Accumulate skipped length:
+ this.outside = true;
+ this.totalSkipLen += len;
+
+ // Fix initial move:
+ this.needsMoveTo = true;
+ this.starting = false;
+ }
+
+ private static boolean pointCurve(final double[] curve, final int type) {
for (int i = 2; i < type; i++) {
if (curve[i] != curve[i-2]) {
return false;
}
}
@@ -462,19 +636,18 @@
// limit+1 curves - one for each level of the tree + 1.
// NOTE: the way we do things here is not enough to traverse a general
// tree; however, the trees we are interested in have the property that
// every non leaf node has exactly 2 children
static final class LengthIterator {
- private enum Side {LEFT, RIGHT}
// Holds the curves at various levels of the recursion. The root
// (i.e. the original curve) is at recCurveStack[0] (but then it
// gets subdivided, the left half is put at 1, so most of the time
// only the right half of the original curve is at 0)
private final double[][] recCurveStack; // dirty
- // sides[i] indicates whether the node at level i+1 in the path from
+ // sidesRight[i] indicates whether the node at level i+1 in the path from
// the root to the current leaf is a left or right child of its parent.
- private final Side[] sides; // dirty
+ private final boolean[] sidesRight; // dirty
private int curveType;
// lastT and nextT delimit the current leaf.
private double nextT;
private double lenAtNextT;
private double lastT;
@@ -491,11 +664,11 @@
// next() for more detail.
private final double[] curLeafCtrlPolyLengths = new double[3];
LengthIterator() {
this.recCurveStack = new double[REC_LIMIT + 1][8];
- this.sides = new Side[REC_LIMIT];
+ this.sidesRight = new boolean[REC_LIMIT];
// if any methods are called without first initializing this object
// on a curve, we want it to fail ASAP.
this.nextT = Double.MAX_VALUE;
this.lenAtNextT = Double.MAX_VALUE;
this.lenAtLastSplit = Double.MIN_VALUE;
@@ -513,19 +686,19 @@
if (DO_CLEAN_DIRTY) {
final int recLimit = recCurveStack.length - 1;
for (int i = recLimit; i >= 0; i--) {
Arrays.fill(recCurveStack[i], 0.0d);
}
- Arrays.fill(sides, Side.LEFT);
+ Arrays.fill(sidesRight, false);
Arrays.fill(curLeafCtrlPolyLengths, 0.0d);
Arrays.fill(nextRoots, 0.0d);
Arrays.fill(flatLeafCoefCache, 0.0d);
flatLeafCoefCache[2] = -1.0d;
}
}
- void initializeIterationOnCurve(double[] pts, int type) {
+ void initializeIterationOnCurve(final double[] pts, final int type) {
// optimize arraycopy (8 values faster than 6 = type):
System.arraycopy(pts, 0, recCurveStack[0], 0, 8);
this.curveType = type;
this.recLevel = 0;
this.lastT = 0.0d;
@@ -533,24 +706,24 @@
this.nextT = 0.0d;
this.lenAtNextT = 0.0d;
goLeft(); // initializes nextT and lenAtNextT properly
this.lenAtLastSplit = 0.0d;
if (recLevel > 0) {
- this.sides[0] = Side.LEFT;
+ this.sidesRight[0] = false;
this.done = false;
} else {
// the root of the tree is a leaf so we're done.
- this.sides[0] = Side.RIGHT;
+ this.sidesRight[0] = true;
this.done = true;
}
this.lastSegLen = 0.0d;
}
// 0 == false, 1 == true, -1 == invalid cached value.
private int cachedHaveLowAcceleration = -1;
- private boolean haveLowAcceleration(double err) {
+ private boolean haveLowAcceleration(final double err) {
if (cachedHaveLowAcceleration == -1) {
final double len1 = curLeafCtrlPolyLengths[0];
final double len2 = curLeafCtrlPolyLengths[1];
// the test below is equivalent to !within(len1/len2, 1, err).
// It is using a multiplication instead of a division, so it
@@ -613,11 +786,11 @@
// gives us the desired length.
final double[] _flatLeafCoefCache = flatLeafCoefCache;
if (_flatLeafCoefCache[2] < 0.0d) {
double x = curLeafCtrlPolyLengths[0],
- y = x + curLeafCtrlPolyLengths[1];
+ y = x + curLeafCtrlPolyLengths[1];
if (curveType == 8) {
double z = y + curLeafCtrlPolyLengths[2];
_flatLeafCoefCache[0] = 3.0d * (x - y) + z;
_flatLeafCoefCache[1] = 3.0d * (y - 2.0d * x);
_flatLeafCoefCache[2] = 3.0d * x;
@@ -635,11 +808,11 @@
double d = t * _flatLeafCoefCache[3];
// we use cubicRootsInAB here, because we want only roots in 0, 1,
// and our quadratic root finder doesn't filter, so it's just a
// matter of convenience.
- int n = DHelpers.cubicRootsInAB(a, b, c, d, nextRoots, 0, 0.0d, 1.0d);
+ final int n = DHelpers.cubicRootsInAB(a, b, c, d, nextRoots, 0, 0.0d, 1.0d);
if (n == 1 && !Double.isNaN(nextRoots[0])) {
t = nextRoots[0];
}
}
// t is relative to the current leaf, so we must make it a valid parameter
@@ -656,58 +829,67 @@
// loop, and lastSegLen will still be set to the right value.
lastSegLen = len;
return t;
}
+ double totalLength() {
+ while (!done) {
+ goToNextLeaf();
+ }
+ // reset LengthIterator:
+ reset();
+
+ return lenAtNextT;
+ }
+
double lastSegLen() {
return lastSegLen;
}
// go to the next leaf (in an inorder traversal) in the recursion tree
// preconditions: must be on a leaf, and that leaf must not be the root.
private void goToNextLeaf() {
// We must go to the first ancestor node that has an unvisited
// right child.
+ final boolean[] _sides = sidesRight;
int _recLevel = recLevel;
- final Side[] _sides = sides;
-
_recLevel--;
- while(_sides[_recLevel] == Side.RIGHT) {
+
+ while(_sides[_recLevel]) {
if (_recLevel == 0) {
recLevel = 0;
done = true;
return;
}
_recLevel--;
}
- _sides[_recLevel] = Side.RIGHT;
+ _sides[_recLevel] = true;
// optimize arraycopy (8 values faster than 6 = type):
- System.arraycopy(recCurveStack[_recLevel], 0,
- recCurveStack[_recLevel+1], 0, 8);
- _recLevel++;
-
+ System.arraycopy(recCurveStack[_recLevel++], 0,
+ recCurveStack[_recLevel], 0, 8);
recLevel = _recLevel;
goLeft();
}
// go to the leftmost node from the current node. Return its length.
private void goLeft() {
- double len = onLeaf();
+ final double len = onLeaf();
if (len >= 0.0d) {
lastT = nextT;
lenAtLastT = lenAtNextT;
nextT += (1 << (REC_LIMIT - recLevel)) * MIN_T_INC;
lenAtNextT += len;
// invalidate caches
flatLeafCoefCache[2] = -1.0d;
cachedHaveLowAcceleration = -1;
} else {
- DHelpers.subdivide(recCurveStack[recLevel], 0,
- recCurveStack[recLevel+1], 0,
- recCurveStack[recLevel], 0, curveType);
- sides[recLevel] = Side.LEFT;
+ DHelpers.subdivide(recCurveStack[recLevel],
+ recCurveStack[recLevel + 1],
+ recCurveStack[recLevel], curveType);
+
+ sidesRight[recLevel] = false;
recLevel++;
goLeft();
}
}
@@ -718,22 +900,21 @@
final int _curveType = curveType;
double polyLen = 0.0d;
double x0 = curve[0], y0 = curve[1];
for (int i = 2; i < _curveType; i += 2) {
- final double x1 = curve[i], y1 = curve[i+1];
+ final double x1 = curve[i], y1 = curve[i + 1];
final double len = DHelpers.linelen(x0, y0, x1, y1);
polyLen += len;
curLeafCtrlPolyLengths[(i >> 1) - 1] = len;
x0 = x1;
y0 = y1;
}
- final double lineLen = DHelpers.linelen(curve[0], curve[1],
- curve[_curveType-2],
- curve[_curveType-1]);
- if ((polyLen - lineLen) < ERR || recLevel == REC_LIMIT) {
+ final double lineLen = DHelpers.linelen(curve[0], curve[1], x0, y0);
+
+ if ((polyLen - lineLen) < CURVE_LEN_ERR || recLevel == REC_LIMIT) {
return (polyLen + lineLen) / 2.0d;
}
return -1.0d;
}
}
@@ -741,45 +922,194 @@
@Override
public void curveTo(final double x1, final double y1,
final double x2, final double y2,
final double x3, final double y3)
{
+ final int outcode0 = this.cOutCode;
+
+ if (clipRect != null) {
+ final int outcode1 = DHelpers.outcode(x1, y1, clipRect);
+ final int outcode2 = DHelpers.outcode(x2, y2, clipRect);
+ final int outcode3 = DHelpers.outcode(x3, y3, clipRect);
+
+ // Should clip
+ final int orCode = (outcode0 | outcode1 | outcode2 | outcode3);
+ if (orCode != 0) {
+ final int sideCode = outcode0 & outcode1 & outcode2 & outcode3;
+
+ // basic rejection criteria:
+ if (sideCode == 0) {
+ // ovelap clip:
+ if (subdivide) {
+ // avoid reentrance
+ subdivide = false;
+ // subdivide curve => callback with subdivided parts:
+ boolean ret = curveSplitter.splitCurve(cx0, cy0, x1, y1, x2, y2, x3, y3,
+ orCode, this);
+ // reentrance is done:
+ subdivide = true;
+ if (ret) {
+ return;
+ }
+ }
+ // already subdivided so render it
+ } else {
+ this.cOutCode = outcode3;
+ skipCurveTo(x1, y1, x2, y2, x3, y3);
+ return;
+ }
+ }
+
+ this.cOutCode = outcode3;
+
+ if (this.outside) {
+ this.outside = false;
+ // Adjust current index, phase & dash:
+ skipLen();
+ }
+ }
+ _curveTo(x1, y1, x2, y2, x3, y3);
+ }
+
+ private void _curveTo(final double x1, final double y1,
+ final double x2, final double y2,
+ final double x3, final double y3)
+ {
final double[] _curCurvepts = curCurvepts;
- _curCurvepts[0] = x0; _curCurvepts[1] = y0;
- _curCurvepts[2] = x1; _curCurvepts[3] = y1;
- _curCurvepts[4] = x2; _curCurvepts[5] = y2;
- _curCurvepts[6] = x3; _curCurvepts[7] = y3;
- somethingTo(8);
+
+ // monotonize curve:
+ final CurveBasicMonotonizer monotonizer
+ = rdrCtx.monotonizer.curve(cx0, cy0, x1, y1, x2, y2, x3, y3);
+
+ final int nSplits = monotonizer.nbSplits;
+ final double[] mid = monotonizer.middle;
+
+ for (int i = 0, off = 0; i <= nSplits; i++, off += 6) {
+ // optimize arraycopy (8 values faster than 6 = type):
+ System.arraycopy(mid, off, _curCurvepts, 0, 8);
+
+ somethingTo(8);
+ }
+ }
+
+ private void skipCurveTo(final double x1, final double y1,
+ final double x2, final double y2,
+ final double x3, final double y3)
+ {
+ final double[] _curCurvepts = curCurvepts;
+ _curCurvepts[0] = cx0; _curCurvepts[1] = cy0;
+ _curCurvepts[2] = x1; _curCurvepts[3] = y1;
+ _curCurvepts[4] = x2; _curCurvepts[5] = y2;
+ _curCurvepts[6] = x3; _curCurvepts[7] = y3;
+
+ skipSomethingTo(8);
+
+ this.cx0 = x3;
+ this.cy0 = y3;
}
@Override
public void quadTo(final double x1, final double y1,
final double x2, final double y2)
{
+ final int outcode0 = this.cOutCode;
+
+ if (clipRect != null) {
+ final int outcode1 = DHelpers.outcode(x1, y1, clipRect);
+ final int outcode2 = DHelpers.outcode(x2, y2, clipRect);
+
+ // Should clip
+ final int orCode = (outcode0 | outcode1 | outcode2);
+ if (orCode != 0) {
+ final int sideCode = outcode0 & outcode1 & outcode2;
+
+ // basic rejection criteria:
+ if (sideCode == 0) {
+ // ovelap clip:
+ if (subdivide) {
+ // avoid reentrance
+ subdivide = false;
+ // subdivide curve => call lineTo() with subdivided curves:
+ boolean ret = curveSplitter.splitQuad(cx0, cy0, x1, y1,
+ x2, y2, orCode, this);
+ // reentrance is done:
+ subdivide = true;
+ if (ret) {
+ return;
+ }
+ }
+ // already subdivided so render it
+ } else {
+ this.cOutCode = outcode2;
+ skipQuadTo(x1, y1, x2, y2);
+ return;
+ }
+ }
+
+ this.cOutCode = outcode2;
+
+ if (this.outside) {
+ this.outside = false;
+ // Adjust current index, phase & dash:
+ skipLen();
+ }
+ }
+ _quadTo(x1, y1, x2, y2);
+ }
+
+ private void _quadTo(final double x1, final double y1,
+ final double x2, final double y2)
+ {
final double[] _curCurvepts = curCurvepts;
- _curCurvepts[0] = x0; _curCurvepts[1] = y0;
- _curCurvepts[2] = x1; _curCurvepts[3] = y1;
- _curCurvepts[4] = x2; _curCurvepts[5] = y2;
- somethingTo(6);
+
+ // monotonize quad:
+ final CurveBasicMonotonizer monotonizer
+ = rdrCtx.monotonizer.quad(cx0, cy0, x1, y1, x2, y2);
+
+ final int nSplits = monotonizer.nbSplits;
+ final double[] mid = monotonizer.middle;
+
+ for (int i = 0, off = 0; i <= nSplits; i++, off += 4) {
+ // optimize arraycopy (8 values faster than 6 = type):
+ System.arraycopy(mid, off, _curCurvepts, 0, 8);
+
+ somethingTo(6);
+ }
+ }
+
+ private void skipQuadTo(final double x1, final double y1,
+ final double x2, final double y2)
+ {
+ final double[] _curCurvepts = curCurvepts;
+ _curCurvepts[0] = cx0; _curCurvepts[1] = cy0;
+ _curCurvepts[2] = x1; _curCurvepts[3] = y1;
+ _curCurvepts[4] = x2; _curCurvepts[5] = y2;
+
+ skipSomethingTo(6);
+
+ this.cx0 = x2;
+ this.cy0 = y2;
}
@Override
public void closePath() {
- lineTo(sx, sy);
+ if (cx0 != sx0 || cy0 != sy0) {
+ lineTo(sx0, sy0);
+ }
if (firstSegidx != 0) {
if (!dashOn || needsMoveTo) {
- out.moveTo(sx, sy);
+ out.moveTo(sx0, sy0);
}
emitFirstSegments();
}
- moveTo(sx, sy);
+ moveTo(sx0, sy0);
}
@Override
public void pathDone() {
if (firstSegidx != 0) {
- out.moveTo(sx, sy);
+ out.moveTo(sx0, sy0);
emitFirstSegments();
}
out.pathDone();
// Dispose this instance:
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