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openjfx9/modules/javafx.graphics/src/main/java/com/sun/marlin/Curve.java

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*** 21,38 **** * 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.marlin; final class Curve { float ax, ay, bx, by, cx, cy, dx, dy; float dax, day, dbx, dby; - // shared iterator instance - private final BreakPtrIterator iterator = new BreakPtrIterator(); Curve() { } void set(float[] points, int type) { --- 21,36 ---- * 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 com.sun.marlin; final class Curve { float ax, ay, bx, by, cx, cy, dx, dy; float dax, day, dbx, dby; Curve() { } void set(float[] points, int type) {
*** 234,304 **** final float dx2dy2 = dx*dx + dy*dy; final float ddx2ddy2 = ddx*ddx + ddy*ddy; final float ddxdxddydy = ddx*dx + ddy*dy; return dx2dy2*((dx2dy2*dx2dy2) / (dx2dy2 * ddx2ddy2 - ddxdxddydy*ddxdxddydy)); } - - // curve to be broken should be in pts - // this will change the contents of pts but not Ts - // TODO: There's no reason for Ts to be an array. All we need is a sequence - // of t values at which to subdivide. An array statisfies this condition, - // but is unnecessarily restrictive. Ts should be an Iterator<Float> instead. - // Doing this will also make dashing easier, since we could easily make - // LengthIterator an Iterator<Float> and feed it to this function to simplify - // the loop in Dasher.somethingTo. - BreakPtrIterator breakPtsAtTs(final float[] pts, final int type, - final float[] Ts, final int numTs) - { - assert pts.length >= 2*type && numTs <= Ts.length; - - // initialize shared iterator: - iterator.init(pts, type, Ts, numTs); - - return iterator; - } - - static final class BreakPtrIterator { - private int nextCurveIdx; - private int curCurveOff; - private float prevT; - private float[] pts; - private int type; - private float[] ts; - private int numTs; - - void init(final float[] pts, final int type, - final float[] ts, final int numTs) { - this.pts = pts; - this.type = type; - this.ts = ts; - this.numTs = numTs; - - nextCurveIdx = 0; - curCurveOff = 0; - prevT = 0f; - } - - public boolean hasNext() { - return nextCurveIdx <= numTs; - } - - public int next() { - int ret; - if (nextCurveIdx < numTs) { - float curT = ts[nextCurveIdx]; - float splitT = (curT - prevT) / (1f - prevT); - Helpers.subdivideAt(splitT, - pts, curCurveOff, - pts, 0, - pts, type, type); - prevT = curT; - ret = 0; - curCurveOff = type; - } else { - ret = curCurveOff; - } - nextCurveIdx++; - return ret; - } - } } - --- 232,237 ----
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