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Side by Side Diff: src/utils/SkInterpolator.cpp

Issue 351713005: Promote SkInterpolator unit test to our tests driver. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: review Created 6 years, 5 months ago
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1 1
2 /* 2 /*
3 * Copyright 2008 The Android Open Source Project 3 * Copyright 2008 The Android Open Source Project
4 * 4 *
5 * Use of this source code is governed by a BSD-style license that can be 5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file. 6 * found in the LICENSE file.
7 */ 7 */
8 8
9 9
10 #include "SkInterpolator.h" 10 #include "SkInterpolator.h"
(...skipping 251 matching lines...) Expand 10 before | Expand all | Expand 10 after
262 } 262 }
263 263
264 // Now we have t, so compute the coeff for Y and evaluate 264 // Now we have t, so compute the coeff for Y and evaluate
265 b = pin_and_convert(by); 265 b = pin_and_convert(by);
266 c = pin_and_convert(cy); 266 c = pin_and_convert(cy);
267 A = 3*b; 267 A = 3*b;
268 B = 3*(c - 2*b); 268 B = 3*(c - 2*b);
269 C = 3*(b - c) + Dot14_ONE; 269 C = 3*(b - c) + Dot14_ONE;
270 return SkFixedToScalar(eval_cubic(t, A, B, C) << 2); 270 return SkFixedToScalar(eval_cubic(t, A, B, C) << 2);
271 } 271 }
272
273 ///////////////////////////////////////////////////////////////////////////////
274 ///////////////////////////////////////////////////////////////////////////////
275
276 #ifdef SK_DEBUG
277
278 #ifdef SK_SUPPORT_UNITTEST
279 static SkScalar* iset(SkScalar array[3], int a, int b, int c) {
280 array[0] = SkIntToScalar(a);
281 array[1] = SkIntToScalar(b);
282 array[2] = SkIntToScalar(c);
283 return array;
284 }
285 #endif
286
287 void SkInterpolator::UnitTest() {
288 #ifdef SK_SUPPORT_UNITTEST
289 SkInterpolator inter(3, 2);
290 SkScalar v1[3], v2[3], v[3], vv[3];
291 Result result;
292
293 inter.setKeyFrame(0, 100, iset(v1, 10, 20, 30), 0);
294 inter.setKeyFrame(1, 200, iset(v2, 110, 220, 330));
295
296 result = inter.timeToValues(0, v);
297 SkASSERT(result == kFreezeStart_Result);
298 SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
299
300 result = inter.timeToValues(99, v);
301 SkASSERT(result == kFreezeStart_Result);
302 SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
303
304 result = inter.timeToValues(100, v);
305 SkASSERT(result == kNormal_Result);
306 SkASSERT(memcmp(v, v1, sizeof(v)) == 0);
307
308 result = inter.timeToValues(200, v);
309 SkASSERT(result == kNormal_Result);
310 SkASSERT(memcmp(v, v2, sizeof(v)) == 0);
311
312 result = inter.timeToValues(201, v);
313 SkASSERT(result == kFreezeEnd_Result);
314 SkASSERT(memcmp(v, v2, sizeof(v)) == 0);
315
316 result = inter.timeToValues(150, v);
317 SkASSERT(result == kNormal_Result);
318 SkASSERT(memcmp(v, iset(vv, 60, 120, 180), sizeof(v)) == 0);
319
320 result = inter.timeToValues(125, v);
321 SkASSERT(result == kNormal_Result);
322 result = inter.timeToValues(175, v);
323 SkASSERT(result == kNormal_Result);
324 #endif
325 }
326
327 #endif
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