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comparison: gfx/skia/trunk/include/utils/SkCamera.h
gfx/skia/trunk/include/utils/SkCamera.h
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- TOR_BUG_9701
- changeset 15
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| -1:000000000000 | 0:ae189a00c54c |
|---|---|
| 1 /* | |
| 2 * Copyright 2006 The Android Open Source Project | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 // Inspired by Rob Johnson's most excellent QuickDraw GX sample code | |
| 9 | |
| 10 #ifndef SkCamera_DEFINED | |
| 11 #define SkCamera_DEFINED | |
| 12 | |
| 13 #include "SkMatrix.h" | |
| 14 | |
| 15 class SkCanvas; | |
| 16 | |
| 17 struct SkUnit3D { | |
| 18 SkScalar fX, fY, fZ; | |
| 19 | |
| 20 void set(SkScalar x, SkScalar y, SkScalar z) { | |
| 21 fX = x; fY = y; fZ = z; | |
| 22 } | |
| 23 static SkScalar Dot(const SkUnit3D&, const SkUnit3D&); | |
| 24 static void Cross(const SkUnit3D&, const SkUnit3D&, SkUnit3D* cross); | |
| 25 }; | |
| 26 | |
| 27 struct SkPoint3D { | |
| 28 SkScalar fX, fY, fZ; | |
| 29 | |
| 30 void set(SkScalar x, SkScalar y, SkScalar z) { | |
| 31 fX = x; fY = y; fZ = z; | |
| 32 } | |
| 33 SkScalar normalize(SkUnit3D*) const; | |
| 34 }; | |
| 35 typedef SkPoint3D SkVector3D; | |
| 36 | |
| 37 struct SkMatrix3D { | |
| 38 SkScalar fMat[3][4]; | |
| 39 | |
| 40 void reset(); | |
| 41 | |
| 42 void setRow(int row, SkScalar a, SkScalar b, SkScalar c, SkScalar d = 0) { | |
| 43 SkASSERT((unsigned)row < 3); | |
| 44 fMat[row][0] = a; | |
| 45 fMat[row][1] = b; | |
| 46 fMat[row][2] = c; | |
| 47 fMat[row][3] = d; | |
| 48 } | |
| 49 | |
| 50 void setRotateX(SkScalar deg); | |
| 51 void setRotateY(SkScalar deg); | |
| 52 void setRotateZ(SkScalar deg); | |
| 53 void setTranslate(SkScalar x, SkScalar y, SkScalar z); | |
| 54 | |
| 55 void preRotateX(SkScalar deg); | |
| 56 void preRotateY(SkScalar deg); | |
| 57 void preRotateZ(SkScalar deg); | |
| 58 void preTranslate(SkScalar x, SkScalar y, SkScalar z); | |
| 59 | |
| 60 void setConcat(const SkMatrix3D& a, const SkMatrix3D& b); | |
| 61 void mapPoint(const SkPoint3D& src, SkPoint3D* dst) const; | |
| 62 void mapVector(const SkVector3D& src, SkVector3D* dst) const; | |
| 63 | |
| 64 void mapPoint(SkPoint3D* v) const { | |
| 65 this->mapPoint(*v, v); | |
| 66 } | |
| 67 | |
| 68 void mapVector(SkVector3D* v) const { | |
| 69 this->mapVector(*v, v); | |
| 70 } | |
| 71 }; | |
| 72 | |
| 73 class SkPatch3D { | |
| 74 public: | |
| 75 SkPatch3D(); | |
| 76 | |
| 77 void reset(); | |
| 78 void transform(const SkMatrix3D&, SkPatch3D* dst = NULL) const; | |
| 79 | |
| 80 // dot a unit vector with the patch's normal | |
| 81 SkScalar dotWith(SkScalar dx, SkScalar dy, SkScalar dz) const; | |
| 82 SkScalar dotWith(const SkVector3D& v) const { | |
| 83 return this->dotWith(v.fX, v.fY, v.fZ); | |
| 84 } | |
| 85 | |
| 86 // deprecated, but still here for animator (for now) | |
| 87 void rotate(SkScalar x, SkScalar y, SkScalar z) {} | |
| 88 void rotateDegrees(SkScalar x, SkScalar y, SkScalar z) {} | |
| 89 | |
| 90 private: | |
| 91 public: // make public for SkDraw3D for now | |
| 92 SkVector3D fU, fV; | |
| 93 SkPoint3D fOrigin; | |
| 94 | |
| 95 friend class SkCamera3D; | |
| 96 }; | |
| 97 | |
| 98 class SkCamera3D { | |
| 99 public: | |
| 100 SkCamera3D(); | |
| 101 | |
| 102 void reset(); | |
| 103 void update(); | |
| 104 void patchToMatrix(const SkPatch3D&, SkMatrix* matrix) const; | |
| 105 | |
| 106 SkPoint3D fLocation; | |
| 107 SkPoint3D fAxis; | |
| 108 SkPoint3D fZenith; | |
| 109 SkPoint3D fObserver; | |
| 110 | |
| 111 private: | |
| 112 mutable SkMatrix fOrientation; | |
| 113 mutable bool fNeedToUpdate; | |
| 114 | |
| 115 void doUpdate() const; | |
| 116 }; | |
| 117 | |
| 118 class Sk3DView : SkNoncopyable { | |
| 119 public: | |
| 120 Sk3DView(); | |
| 121 ~Sk3DView(); | |
| 122 | |
| 123 void save(); | |
| 124 void restore(); | |
| 125 | |
| 126 void translate(SkScalar x, SkScalar y, SkScalar z); | |
| 127 void rotateX(SkScalar deg); | |
| 128 void rotateY(SkScalar deg); | |
| 129 void rotateZ(SkScalar deg); | |
| 130 | |
| 131 #ifdef SK_BUILD_FOR_ANDROID | |
| 132 void setCameraLocation(SkScalar x, SkScalar y, SkScalar z); | |
| 133 SkScalar getCameraLocationX(); | |
| 134 SkScalar getCameraLocationY(); | |
| 135 SkScalar getCameraLocationZ(); | |
| 136 #endif | |
| 137 | |
| 138 void getMatrix(SkMatrix*) const; | |
| 139 void applyToCanvas(SkCanvas*) const; | |
| 140 | |
| 141 SkScalar dotWithNormal(SkScalar dx, SkScalar dy, SkScalar dz) const; | |
| 142 | |
| 143 private: | |
| 144 struct Rec { | |
| 145 Rec* fNext; | |
| 146 SkMatrix3D fMatrix; | |
| 147 }; | |
| 148 Rec* fRec; | |
| 149 Rec fInitialRec; | |
| 150 SkCamera3D fCamera; | |
| 151 }; | |
| 152 | |
| 153 #endif |
