| OLD | NEW |
| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 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 "SkCamera.h" | 10 #include "SkCamera.h" |
| 11 | 11 |
| 12 static SkScalar SkScalarDotDiv(int count, const SkScalar a[], int step_a, | 12 static SkScalar SkScalarDotDiv(int count, const SkScalar a[], int step_a, |
| 13 const SkScalar b[], int step_b, | 13 const SkScalar b[], int step_b, |
| 14 SkScalar denom) { | 14 SkScalar denom) { |
| 15 #ifdef SK_SCALAR_IS_FLOAT | |
| 16 float prod = 0; | 15 float prod = 0; |
| 17 for (int i = 0; i < count; i++) { | 16 for (int i = 0; i < count; i++) { |
| 18 prod += a[0] * b[0]; | 17 prod += a[0] * b[0]; |
| 19 a += step_a; | 18 a += step_a; |
| 20 b += step_b; | 19 b += step_b; |
| 21 } | 20 } |
| 22 return prod / denom; | 21 return prod / denom; |
| 23 #else | |
| 24 Sk64 prod, tmp; | |
| 25 | |
| 26 prod.set(0); | |
| 27 for (int i = 0; i < count; i++) { | |
| 28 tmp.setMul(a[0], b[0]); | |
| 29 prod.add(tmp); | |
| 30 a += step_a; | |
| 31 b += step_b; | |
| 32 } | |
| 33 prod.div(denom, Sk64::kRound_DivOption); | |
| 34 return prod.get32(); | |
| 35 #endif | |
| 36 } | 22 } |
| 37 | 23 |
| 38 static SkScalar SkScalarDot(int count, const SkScalar a[], int step_a, | 24 static SkScalar SkScalarDot(int count, const SkScalar a[], int step_a, |
| 39 const SkScalar b[], int step_b) { | 25 const SkScalar b[], int step_b) { |
| 40 #ifdef SK_SCALAR_IS_FLOAT | |
| 41 float prod = 0; | 26 float prod = 0; |
| 42 for (int i = 0; i < count; i++) { | 27 for (int i = 0; i < count; i++) { |
| 43 prod += a[0] * b[0]; | 28 prod += a[0] * b[0]; |
| 44 a += step_a; | 29 a += step_a; |
| 45 b += step_b; | 30 b += step_b; |
| 46 } | 31 } |
| 47 return prod; | 32 return prod; |
| 48 #else | |
| 49 Sk64 prod, tmp; | |
| 50 | |
| 51 prod.set(0); | |
| 52 for (int i = 0; i < count; i++) { | |
| 53 tmp.setMul(a[0], b[0]); | |
| 54 prod.add(tmp); | |
| 55 a += step_a; | |
| 56 b += step_b; | |
| 57 } | |
| 58 return prod.getFixed(); | |
| 59 #endif | |
| 60 } | 33 } |
| 61 | 34 |
| 62 /////////////////////////////////////////////////////////////////////////////// | 35 /////////////////////////////////////////////////////////////////////////////// |
| 63 | 36 |
| 64 SkUnitScalar SkPoint3D::normalize(SkUnit3D* unit) const { | 37 SkUnitScalar SkPoint3D::normalize(SkUnit3D* unit) const { |
| 65 #ifdef SK_SCALAR_IS_FLOAT | |
| 66 float mag = sk_float_sqrt(fX*fX + fY*fY + fZ*fZ); | 38 float mag = sk_float_sqrt(fX*fX + fY*fY + fZ*fZ); |
| 67 if (mag) { | 39 if (mag) { |
| 68 float scale = 1.0f / mag; | 40 float scale = 1.0f / mag; |
| 69 unit->fX = fX * scale; | 41 unit->fX = fX * scale; |
| 70 unit->fY = fY * scale; | 42 unit->fY = fY * scale; |
| 71 unit->fZ = fZ * scale; | 43 unit->fZ = fZ * scale; |
| 72 } else { | 44 } else { |
| 73 unit->fX = unit->fY = unit->fZ = 0; | 45 unit->fX = unit->fY = unit->fZ = 0; |
| 74 } | 46 } |
| 75 #else | |
| 76 Sk64 tmp1, tmp2; | |
| 77 | |
| 78 tmp1.setMul(fX, fX); | |
| 79 tmp2.setMul(fY, fY); | |
| 80 tmp1.add(tmp2); | |
| 81 tmp2.setMul(fZ, fZ); | |
| 82 tmp1.add(tmp2); | |
| 83 | |
| 84 SkFixed mag = tmp1.getSqrt(); | |
| 85 if (mag) { | |
| 86 // what if mag < SK_Fixed1 ??? we will underflow the fixdiv | |
| 87 SkFixed scale = SkFixedDiv(SK_Fract1, mag); | |
| 88 unit->fX = SkFixedMul(fX, scale); | |
| 89 unit->fY = SkFixedMul(fY, scale); | |
| 90 unit->fZ = SkFixedMul(fZ, scale); | |
| 91 } else { | |
| 92 unit->fX = unit->fY = unit->fZ = 0; | |
| 93 } | |
| 94 #endif | |
| 95 return mag; | 47 return mag; |
| 96 } | 48 } |
| 97 | 49 |
| 98 SkUnitScalar SkUnit3D::Dot(const SkUnit3D& a, const SkUnit3D& b) { | 50 SkUnitScalar SkUnit3D::Dot(const SkUnit3D& a, const SkUnit3D& b) { |
| 99 return SkUnitScalarMul(a.fX, b.fX) + | 51 return SkUnitScalarMul(a.fX, b.fX) + |
| 100 SkUnitScalarMul(a.fY, b.fY) + | 52 SkUnitScalarMul(a.fY, b.fY) + |
| 101 SkUnitScalarMul(a.fZ, b.fZ); | 53 SkUnitScalarMul(a.fZ, b.fZ); |
| 102 } | 54 } |
| 103 | 55 |
| 104 void SkUnit3D::Cross(const SkUnit3D& a, const SkUnit3D& b, SkUnit3D* cross) { | 56 void SkUnit3D::Cross(const SkUnit3D& a, const SkUnit3D& b, SkUnit3D* cross) { |
| (...skipping 311 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 416 } | 368 } |
| 417 | 369 |
| 418 #include "SkCanvas.h" | 370 #include "SkCanvas.h" |
| 419 | 371 |
| 420 void Sk3DView::applyToCanvas(SkCanvas* canvas) const { | 372 void Sk3DView::applyToCanvas(SkCanvas* canvas) const { |
| 421 SkMatrix matrix; | 373 SkMatrix matrix; |
| 422 | 374 |
| 423 this->getMatrix(&matrix); | 375 this->getMatrix(&matrix); |
| 424 canvas->concat(matrix); | 376 canvas->concat(matrix); |
| 425 } | 377 } |
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