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 sun.java2d.marlin;
27
28 import java.awt.geom.AffineTransform;
29 import java.awt.geom.Path2D;
30
31 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 DPathConsumer2D wrapPath2d(Path2D.Double p2d)
41 {
42 return wp_Path2DWrapper.init(p2d);
43 }
44
45 // recycled DPathConsumer2D instances from deltaTransformConsumer()
46 private final DeltaScaleFilter dt_DeltaScaleFilter = new DeltaScaleFilter();
47 private final DeltaTransformFilter dt_DeltaTransformFilter = new DeltaTransformFilter();
48
49 DPathConsumer2D deltaTransformConsumer(DPathConsumer2D out,
50 AffineTransform at)
51 {
52 if (at == null) {
53 return out;
54 }
55 double mxx = at.getScaleX();
56 double mxy = at.getShearX();
57 double myx = at.getShearY();
58 double myy = at.getScaleY();
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 DPathConsumer2D inverseDeltaTransformConsumer(DPathConsumer2D out,
76 AffineTransform at)
77 {
78 if (at == null) {
79 return out;
80 }
81 double mxx = at.getScaleX();
82 double mxy = at.getShearX();
83 double myx = at.getShearY();
84 double myy = at.getScaleY();
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
103 static final class DeltaScaleFilter implements DPathConsumer2D {
104 private DPathConsumer2D out;
105 private double sx, sy;
106
107 DeltaScaleFilter() {}
108
109 DeltaScaleFilter init(DPathConsumer2D out,
110 double mxx, double myy)
111 {
112 this.out = out;
113 sx = mxx;
114 sy = myy;
115 return this; // fluent API
116 }
117
118 @Override
119 public void moveTo(double x0, double y0) {
120 out.moveTo(x0 * sx, y0 * sy);
121 }
122
123 @Override
124 public void lineTo(double x1, double y1) {
125 out.lineTo(x1 * sx, y1 * sy);
126 }
127
128 @Override
129 public void quadTo(double x1, double y1,
130 double x2, double y2)
131 {
132 out.quadTo(x1 * sx, y1 * sy,
133 x2 * sx, y2 * sy);
134 }
135
136 @Override
137 public void curveTo(double x1, double y1,
138 double x2, double y2,
139 double x3, double y3)
140 {
141 out.curveTo(x1 * sx, y1 * sy,
142 x2 * sx, y2 * sy,
143 x3 * sx, y3 * sy);
144 }
145
146 @Override
147 public void closePath() {
148 out.closePath();
149 }
150
151 @Override
152 public void pathDone() {
153 out.pathDone();
154 }
155
156 @Override
157 public long getNativeConsumer() {
158 return 0;
159 }
160 }
161
162 static final class DeltaTransformFilter implements DPathConsumer2D {
163 private DPathConsumer2D out;
164 private double mxx, mxy, myx, myy;
165
166 DeltaTransformFilter() {}
167
168 DeltaTransformFilter init(DPathConsumer2D out,
169 double mxx, double mxy,
170 double myx, double myy)
171 {
172 this.out = out;
173 this.mxx = mxx;
174 this.mxy = mxy;
175 this.myx = myx;
176 this.myy = myy;
177 return this; // fluent API
178 }
179
180 @Override
181 public void moveTo(double x0, double y0) {
182 out.moveTo(x0 * mxx + y0 * mxy,
183 x0 * myx + y0 * myy);
184 }
185
186 @Override
187 public void lineTo(double x1, double y1) {
188 out.lineTo(x1 * mxx + y1 * mxy,
189 x1 * myx + y1 * myy);
190 }
191
192 @Override
193 public void quadTo(double x1, double y1,
194 double x2, double y2)
195 {
196 out.quadTo(x1 * mxx + y1 * mxy,
197 x1 * myx + y1 * myy,
198 x2 * mxx + y2 * mxy,
199 x2 * myx + y2 * myy);
200 }
201
202 @Override
203 public void curveTo(double x1, double y1,
204 double x2, double y2,
205 double x3, double y3)
206 {
207 out.curveTo(x1 * mxx + y1 * mxy,
208 x1 * myx + y1 * myy,
209 x2 * mxx + y2 * mxy,
210 x2 * myx + y2 * myy,
211 x3 * mxx + y3 * mxy,
212 x3 * myx + y3 * myy);
213 }
214
215 @Override
216 public void closePath() {
217 out.closePath();
218 }
219
220 @Override
221 public void pathDone() {
222 out.pathDone();
223 }
224
225 @Override
226 public long getNativeConsumer() {
227 return 0;
228 }
229 }
230
231 static final class Path2DWrapper implements DPathConsumer2D {
232 private Path2D.Double p2d;
233
234 Path2DWrapper() {}
235
236 Path2DWrapper init(Path2D.Double p2d) {
237 this.p2d = p2d;
238 return this;
239 }
240
241 @Override
242 public void moveTo(double x0, double y0) {
243 p2d.moveTo(x0, y0);
244 }
245
246 @Override
247 public void lineTo(double x1, double y1) {
248 p2d.lineTo(x1, y1);
249 }
250
251 @Override
252 public void closePath() {
253 p2d.closePath();
254 }
255
256 @Override
257 public void pathDone() {}
258
259 @Override
260 public void curveTo(double x1, double y1,
261 double x2, double y2,
262 double x3, double y3)
263 {
264 p2d.curveTo(x1, y1, x2, y2, x3, y3);
265 }
266
267 @Override
268 public void quadTo(double x1, double y1, double x2, double y2) {
269 p2d.quadTo(x1, y1, x2, y2);
270 }
271
272 @Override
273 public long getNativeConsumer() {
274 throw new InternalError("Not using a native peer");
275 }
276 }
277 }