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 return wp_Path2DWrapper.init(p2d);
46 }
47
48 public DPathConsumer2D deltaTransformConsumer(DPathConsumer2D out,
49 BaseTransform at)
50 {
51 if (at == null) {
52 return out;
53 }
54 double mxx = at.getMxx();
55 double mxy = at.getMxy();
56 double myx = at.getMyx();
57 double myy = at.getMyy();
58
59 if (mxy == 0.0d && myx == 0.0d) {
60 if (mxx == 1.0d && myy == 1.0d) {
61 return out;
62 } else {
63 return dt_DeltaScaleFilter.init(out, mxx, myy);
64 }
65 } else {
66 return dt_DeltaTransformFilter.init(out, mxx, mxy, myx, myy);
67 }
68 }
69
70 // recycled DPathConsumer2D instances from inverseDeltaTransformConsumer()
71 private final DeltaScaleFilter iv_DeltaScaleFilter = new DeltaScaleFilter();
72 private final DeltaTransformFilter iv_DeltaTransformFilter = new DeltaTransformFilter();
73
74 public DPathConsumer2D inverseDeltaTransformConsumer(DPathConsumer2D out,
75 BaseTransform at)
76 {
77 if (at == null) {
78 return out;
79 }
80 double mxx = at.getMxx();
81 double mxy = at.getMxy();
82 double myx = at.getMyx();
83 double myy = at.getMyy();
84
85 if (mxy == 0.0d && myx == 0.0d) {
86 if (mxx == 1.0d && myy == 1.0d) {
87 return out;
88 } else {
89 return iv_DeltaScaleFilter.init(out, 1.0d/mxx, 1.0d/myy);
90 }
91 } else {
92 double det = mxx * myy - mxy * myx;
93 return iv_DeltaTransformFilter.init(out,
94 myy / det,
95 -mxy / det,
96 -myx / det,
97 mxx / det);
98 }
99 }
100
101 static final class DeltaScaleFilter implements DPathConsumer2D {
102 private DPathConsumer2D out;
103 private double sx, sy;
104
105 DeltaScaleFilter() {}
106
107 DeltaScaleFilter init(DPathConsumer2D out,
108 double mxx, double myy)
109 {
110 this.out = out;
111 sx = mxx;
112 sy = myy;
113 return this; // fluent API
114 }
115
116 @Override
117 public void moveTo(double x0, double y0) {
118 out.moveTo(x0 * sx, y0 * sy);
119 }
120
121 @Override
122 public void lineTo(double x1, double y1) {
123 out.lineTo(x1 * sx, y1 * sy);
124 }
125
126 @Override
127 public void quadTo(double x1, double y1,
128 double x2, double y2)
129 {
130 out.quadTo(x1 * sx, y1 * sy,
131 x2 * sx, y2 * sy);
132 }
133
134 @Override
135 public void curveTo(double x1, double y1,
136 double x2, double y2,
137 double x3, double y3)
138 {
139 out.curveTo(x1 * sx, y1 * sy,
140 x2 * sx, y2 * sy,
141 x3 * sx, y3 * sy);
142 }
143
144 @Override
145 public void closePath() {
146 out.closePath();
147 }
148
149 @Override
150 public void pathDone() {
151 out.pathDone();
152 }
153 }
154
155 static final class DeltaTransformFilter implements DPathConsumer2D {
156 private DPathConsumer2D out;
157 private double mxx, mxy, myx, myy;
158
159 DeltaTransformFilter() {}
160
161 DeltaTransformFilter init(DPathConsumer2D out,
162 double mxx, double mxy,
163 double myx, double myy)
164 {
165 this.out = out;
166 this.mxx = mxx;
167 this.mxy = mxy;
168 this.myx = myx;
169 this.myy = myy;
170 return this; // fluent API
171 }
172
173 @Override
174 public void moveTo(double x0, double y0) {
175 out.moveTo(x0 * mxx + y0 * mxy,
176 x0 * myx + y0 * myy);
177 }
178
179 @Override
180 public void lineTo(double x1, double y1) {
181 out.lineTo(x1 * mxx + y1 * mxy,
182 x1 * myx + y1 * myy);
183 }
184
185 @Override
186 public void quadTo(double x1, double y1,
187 double x2, double y2)
188 {
189 out.quadTo(x1 * mxx + y1 * mxy,
190 x1 * myx + y1 * myy,
191 x2 * mxx + y2 * mxy,
192 x2 * myx + y2 * myy);
193 }
194
195 @Override
196 public void curveTo(double x1, double y1,
197 double x2, double y2,
198 double x3, double y3)
199 {
200 out.curveTo(x1 * mxx + y1 * mxy,
201 x1 * myx + y1 * myy,
202 x2 * mxx + y2 * mxy,
203 x2 * myx + y2 * myy,
204 x3 * mxx + y3 * mxy,
205 x3 * myx + y3 * myy);
206 }
207
208 @Override
209 public void closePath() {
210 out.closePath();
211 }
212
213 @Override
214 public void pathDone() {
215 out.pathDone();
216 }
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 }