1 /*
2 * Copyright (c) 2007, 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.marlin;
27
28 import com.sun.javafx.geom.Path2D;
29 import com.sun.javafx.geom.transform.BaseTransform;
30
31 public final class DTransformingPathConsumer2D {
32
33 DTransformingPathConsumer2D() {
34 // used by DRendererContext
35 }
36
37 // recycled DPathConsumer2D instance from wrapPath2d()
38 private final Path2DWrapper wp_Path2DWrapper = new Path2DWrapper();
39
40 // recycled DPathConsumer2D instances from deltaTransformConsumer()
41 private final DeltaScaleFilter dt_DeltaScaleFilter = new DeltaScaleFilter();
42 private final DeltaTransformFilter dt_DeltaTransformFilter = new DeltaTransformFilter();
43
44 public DPathConsumer2D wrapPath2d(Path2D p2d)
45 {
46 return wp_Path2DWrapper.init(p2d);
47 }
48
49 public DPathConsumer2D deltaTransformConsumer(DPathConsumer2D out,
50 BaseTransform at)
51 {
52 if (at == null) {
53 return out;
54 }
55 double mxx = at.getMxx();
56 double mxy = at.getMxy();
57 double myx = at.getMyx();
58 double myy = at.getMyy();
59
60 if (mxy == 0.0d && myx == 0.0d) {
61 if (mxx == 1.0d && myy == 1.0d) {
62 return out;
63 } else {
64 return dt_DeltaScaleFilter.init(out, mxx, myy);
65 }
66 } else {
67 return dt_DeltaTransformFilter.init(out, mxx, mxy, myx, myy);
68 }
69 }
70
71 // recycled DPathConsumer2D instances from inverseDeltaTransformConsumer()
72 private final DeltaScaleFilter iv_DeltaScaleFilter = new DeltaScaleFilter();
73 private final DeltaTransformFilter iv_DeltaTransformFilter = new DeltaTransformFilter();
74
75 public DPathConsumer2D inverseDeltaTransformConsumer(DPathConsumer2D out,
76 BaseTransform at)
77 {
78 if (at == null) {
79 return out;
80 }
81 double mxx = at.getMxx();
82 double mxy = at.getMxy();
83 double myx = at.getMyx();
84 double myy = at.getMyy();
85
86 if (mxy == 0.0d && myx == 0.0d) {
87 if (mxx == 1.0d && myy == 1.0d) {
88 return out;
89 } else {
90 return iv_DeltaScaleFilter.init(out, 1.0d/mxx, 1.0d/myy);
91 }
92 } else {
93 double det = mxx * myy - mxy * myx;
94 return iv_DeltaTransformFilter.init(out,
95 myy / det,
96 -mxy / det,
97 -myx / det,
98 mxx / det);
99 }
100 }
101
102 static final class DeltaScaleFilter implements DPathConsumer2D {
103 private DPathConsumer2D out;
104 private double sx, sy;
105
106 DeltaScaleFilter() {}
107
108 DeltaScaleFilter init(DPathConsumer2D out,
109 double mxx, double myy)
110 {
111 this.out = out;
112 sx = mxx;
113 sy = myy;
114 return this; // fluent API
115 }
116
117 @Override
118 public void moveTo(double x0, double y0) {
119 out.moveTo(x0 * sx, y0 * sy);
120 }
121
122 @Override
123 public void lineTo(double x1, double y1) {
124 out.lineTo(x1 * sx, y1 * sy);
125 }
126
127 @Override
128 public void quadTo(double x1, double y1,
129 double x2, double y2)
130 {
131 out.quadTo(x1 * sx, y1 * sy,
132 x2 * sx, y2 * sy);
133 }
134
135 @Override
136 public void curveTo(double x1, double y1,
137 double x2, double y2,
138 double x3, double y3)
139 {
140 out.curveTo(x1 * sx, y1 * sy,
141 x2 * sx, y2 * sy,
142 x3 * sx, y3 * sy);
143 }
144
145 @Override
146 public void closePath() {
147 out.closePath();
148 }
149
150 @Override
151 public void pathDone() {
152 out.pathDone();
153 }
154 }
155
156 static final class DeltaTransformFilter implements DPathConsumer2D {
157 private DPathConsumer2D out;
158 private double mxx, mxy, myx, myy;
159
160 DeltaTransformFilter() {}
161
162 DeltaTransformFilter init(DPathConsumer2D out,
163 double mxx, double mxy,
164 double myx, double myy)
165 {
166 this.out = out;
167 this.mxx = mxx;
168 this.mxy = mxy;
169 this.myx = myx;
170 this.myy = myy;
171 return this; // fluent API
172 }
173
174 @Override
175 public void moveTo(double x0, double y0) {
176 out.moveTo(x0 * mxx + y0 * mxy,
177 x0 * myx + y0 * myy);
178 }
179
180 @Override
181 public void lineTo(double x1, double y1) {
182 out.lineTo(x1 * mxx + y1 * mxy,
183 x1 * myx + y1 * myy);
184 }
185
186 @Override
187 public void quadTo(double x1, double y1,
188 double x2, double y2)
189 {
190 out.quadTo(x1 * mxx + y1 * mxy,
191 x1 * myx + y1 * myy,
192 x2 * mxx + y2 * mxy,
193 x2 * myx + y2 * myy);
194 }
195
196 @Override
197 public void curveTo(double x1, double y1,
198 double x2, double y2,
199 double x3, double y3)
200 {
201 out.curveTo(x1 * mxx + y1 * mxy,
202 x1 * myx + y1 * myy,
203 x2 * mxx + y2 * mxy,
204 x2 * myx + y2 * myy,
205 x3 * mxx + y3 * mxy,
206 x3 * myx + y3 * myy);
207 }
208
209 @Override
210 public void closePath() {
211 out.closePath();
212 }
213
214 @Override
215 public void pathDone() {
216 out.pathDone();
217 }
218 }
219 static final class Path2DWrapper implements DPathConsumer2D {
220 private Path2D p2d;
221
222 Path2DWrapper() {}
223
224 Path2DWrapper init(Path2D p2d) {
225 this.p2d = p2d;
226 return this;
227 }
228
229 @Override
230 public void moveTo(double x0, double y0) {
231 p2d.moveTo((float)x0, (float)y0);
232 }
233
234 @Override
235 public void lineTo(double x1, double y1) {
236 p2d.lineTo((float)x1, (float)y1);
237 }
238
239 @Override
240 public void closePath() {
241 p2d.closePath();
242 }
243
244 @Override
245 public void pathDone() {}
246
247 @Override
248 public void curveTo(double x1, double y1,
249 double x2, double y2,
250 double x3, double y3)
251 {
252 p2d.curveTo((float)x1, (float)y1, (float)x2, (float)y2,
253 (float)x3, (float)y3);
254 }
255
256 @Override
257 public void quadTo(double x1, double y1, double x2, double y2) {
258 p2d.quadTo((float)x1, (float)y1, (float)x2, (float)y2);
259 }
260 }
261 }