/rs/java/android/renderscript/Byte2.java

  1/*
  2 * Copyright (C) 2009 The Android Open Source Project
  3 *
  4 * Licensed under the Apache License, Version 2.0 (the "License");
  5 * you may not use this file except in compliance with the License.
  6 * You may obtain a copy of the License at
  7 *
  8 *      http://www.apache.org/licenses/LICENSE-2.0
  9 *
 10 * Unless required by applicable law or agreed to in writing, software
 11 * distributed under the License is distributed on an "AS IS" BASIS,
 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13 * See the License for the specific language governing permissions and
 14 * limitations under the License.
 15 */
 16
 17package android.renderscript;
 18
 19import java.lang.Math;
 20import android.util.Log;
 21
 22
 23/**
 24 * Class for exposing the native RenderScript byte2 type back to the Android system.
 25 *
 26 **/
 27public class Byte2 {
 28    public byte x;
 29    public byte y;
 30
 31    public Byte2() {
 32    }
 33
 34    public Byte2(byte initX, byte initY) {
 35        x = initX;
 36        y = initY;
 37    }
 38
 39    /** @hide */
 40    public Byte2(Byte2 source) {
 41        this.x = source.x;
 42        this.y = source.y;
 43    }
 44
 45    /** @hide
 46     * Vector add
 47     *
 48     * @param a
 49     */
 50    public void add(Byte2 a) {
 51        this.x += a.x;
 52        this.y += a.y;
 53    }
 54
 55    /** @hide
 56     * Vector add
 57     *
 58     * @param a
 59     * @param b
 60     * @return
 61     */
 62    public static Byte2 add(Byte2 a, Byte2 b) {
 63        Byte2 result = new Byte2();
 64        result.x = (byte)(a.x + b.x);
 65        result.y = (byte)(a.y + b.y);
 66
 67        return result;
 68    }
 69
 70    /** @hide
 71     * Vector add
 72     *
 73     * @param value
 74     */
 75    public void add(byte value) {
 76        x += value;
 77        y += value;
 78    }
 79
 80    /** @hide
 81     * Vector add
 82     *
 83     * @param a
 84     * @param b
 85     * @return
 86     */
 87    public static Byte2 add(Byte2 a, byte b) {
 88        Byte2 result = new Byte2();
 89        result.x = (byte)(a.x + b);
 90        result.y = (byte)(a.y + b);
 91
 92        return result;
 93    }
 94
 95    /** @hide
 96     * Vector subtraction
 97     *
 98     * @param a
 99     */
100    public void sub(Byte2 a) {
101        this.x -= a.x;
102        this.y -= a.y;
103    }
104
105    /** @hide
106     * Vector subtraction
107     *
108     * @param a
109     * @param b
110     * @return
111     */
112    public static Byte2 sub(Byte2 a, Byte2 b) {
113        Byte2 result = new Byte2();
114        result.x = (byte)(a.x - b.x);
115        result.y = (byte)(a.y - b.y);
116
117        return result;
118    }
119
120    /** @hide
121     * Vector subtraction
122     *
123     * @param value
124     */
125    public void sub(byte value) {
126        x -= value;
127        y -= value;
128    }
129
130    /** @hide
131     * Vector subtraction
132     *
133     * @param a
134     * @param b
135     * @return
136     */
137    public static Byte2 sub(Byte2 a, byte b) {
138        Byte2 result = new Byte2();
139        result.x = (byte)(a.x - b);
140        result.y = (byte)(a.y - b);
141
142        return result;
143    }
144
145    /** @hide
146     * Vector multiplication
147     *
148     * @param a
149     */
150    public void mul(Byte2 a) {
151        this.x *= a.x;
152        this.y *= a.y;
153    }
154
155    /** @hide
156     * Vector multiplication
157     *
158     * @param a
159     * @param b
160     * @return
161     */
162    public static Byte2 mul(Byte2 a, Byte2 b) {
163        Byte2 result = new Byte2();
164        result.x = (byte)(a.x * b.x);
165        result.y = (byte)(a.y * b.y);
166
167        return result;
168    }
169
170    /** @hide
171     * Vector multiplication
172     *
173     * @param value
174     */
175    public void mul(byte value) {
176        x *= value;
177        y *= value;
178    }
179
180    /** @hide
181     * Vector multiplication
182     *
183     * @param a
184     * @param b
185     * @return
186     */
187    public static Byte2 mul(Byte2 a, byte b) {
188        Byte2 result = new Byte2();
189        result.x = (byte)(a.x * b);
190        result.y = (byte)(a.y * b);
191
192        return result;
193    }
194
195    /** @hide
196     * Vector division
197     *
198     * @param a
199     */
200    public void div(Byte2 a) {
201        this.x /= a.x;
202        this.y /= a.y;
203    }
204
205    /** @hide
206     * Vector division
207     *
208     * @param a
209     * @param b
210     * @return
211     */
212    public static Byte2 div(Byte2 a, Byte2 b) {
213        Byte2 result = new Byte2();
214        result.x = (byte)(a.x / b.x);
215        result.y = (byte)(a.y / b.y);
216
217        return result;
218    }
219
220    /** @hide
221     * Vector division
222     *
223     * @param value
224     */
225    public void div(byte value) {
226        x /= value;
227        y /= value;
228    }
229
230    /** @hide
231     * Vector division
232     *
233     * @param a
234     * @param b
235     * @return
236     */
237    public static Byte2 div(Byte2 a, byte b) {
238        Byte2 result = new Byte2();
239        result.x = (byte)(a.x / b);
240        result.y = (byte)(a.y / b);
241
242        return result;
243    }
244
245    /** @hide
246     * get vector length
247     *
248     * @return
249     */
250    public byte length() {
251        return 2;
252    }
253
254    /** @hide
255     * set vector negate
256     */
257    public void negate() {
258        this.x = (byte)(-x);
259        this.y = (byte)(-y);
260    }
261
262    /** @hide
263     * Vector dot Product
264     *
265     * @param a
266     * @return
267     */
268    public byte dotProduct(Byte2 a) {
269        return (byte)((x * a.x) + (y * a.y));
270    }
271
272    /** @hide
273     * Vector dot Product
274     *
275     * @param a
276     * @param b
277     * @return
278     */
279    public static byte dotProduct(Byte2 a, Byte2 b) {
280        return (byte)((b.x * a.x) + (b.y * a.y));
281    }
282
283    /** @hide
284     * Vector add Multiple
285     *
286     * @param a
287     * @param factor
288     */
289    public void addMultiple(Byte2 a, byte factor) {
290        x += a.x * factor;
291        y += a.y * factor;
292    }
293
294    /** @hide
295     * set vector value by Byte2
296     *
297     * @param a
298     */
299    public void set(Byte2 a) {
300        this.x = a.x;
301        this.y = a.y;
302    }
303
304    /** @hide
305     * set the vector field value by Char
306     *
307     * @param a
308     * @param b
309     */
310    public void setValues(byte a, byte b) {
311        this.x = a;
312        this.y = b;
313    }
314
315    /** @hide
316     * return the element sum of vector
317     *
318     * @return
319     */
320    public byte elementSum() {
321        return (byte)(x + y);
322    }
323
324    /** @hide
325     * get the vector field value by index
326     *
327     * @param i
328     * @return
329     */
330    public byte get(int i) {
331        switch (i) {
332        case 0:
333            return x;
334        case 1:
335            return y;
336        default:
337            throw new IndexOutOfBoundsException("Index: i");
338        }
339    }
340
341    /** @hide
342     * set the vector field value by index
343     *
344     * @param i
345     * @param value
346     */
347    public void setAt(int i, byte value) {
348        switch (i) {
349        case 0:
350            x = value;
351            return;
352        case 1:
353            y = value;
354            return;
355        default:
356            throw new IndexOutOfBoundsException("Index: i");
357        }
358    }
359
360    /** @hide
361     * add the vector field value by index
362     *
363     * @param i
364     * @param value
365     */
366    public void addAt(int i, byte value) {
367        switch (i) {
368        case 0:
369            x += value;
370            return;
371        case 1:
372            y += value;
373            return;
374        default:
375            throw new IndexOutOfBoundsException("Index: i");
376        }
377    }
378
379    /** @hide
380     * copy the vector to Char array
381     *
382     * @param data
383     * @param offset
384     */
385    public void copyTo(byte[] data, int offset) {
386        data[offset] = x;
387        data[offset + 1] = y;
388    }
389
390}
391
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393
394