Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2020 Google Inc. |
| 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 | #include "include/core/SkCanvas.h" |
Mike Reed | 46f5c5f | 2020-02-20 15:42:29 -0500 | [diff] [blame] | 9 | #include "include/core/SkM44.h" |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 10 | #include "include/core/SkPaint.h" |
| 11 | #include "include/core/SkRRect.h" |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 12 | #include "include/utils/SkRandom.h" |
| 13 | #include "samplecode/Sample.h" |
| 14 | #include "tools/Resources.h" |
| 15 | |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 16 | struct VSphere { |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 17 | SkV2 fCenter; |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 18 | SkScalar fRadius; |
| 19 | |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 20 | VSphere(SkV2 center, SkScalar radius) : fCenter(center), fRadius(radius) {} |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 21 | |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 22 | bool contains(SkV2 v) const { |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 23 | return (v - fCenter).length() <= fRadius; |
| 24 | } |
| 25 | |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 26 | SkV2 pinLoc(SkV2 p) const { |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 27 | auto v = p - fCenter; |
| 28 | if (v.length() > fRadius) { |
| 29 | v *= (fRadius / v.length()); |
| 30 | } |
| 31 | return fCenter + v; |
| 32 | } |
| 33 | |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 34 | SkV3 computeUnitV3(SkV2 v) const { |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 35 | v = (v - fCenter) * (1 / fRadius); |
| 36 | SkScalar len2 = v.lengthSquared(); |
| 37 | if (len2 > 1) { |
Mike Reed | e1a81ba | 2020-02-19 17:40:32 -0500 | [diff] [blame] | 38 | v = v.normalize(); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 39 | len2 = 1; |
| 40 | } |
| 41 | SkScalar z = SkScalarSqrt(1 - len2); |
| 42 | return {v.x, v.y, z}; |
| 43 | } |
| 44 | |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 45 | struct RotateInfo { |
| 46 | SkV3 fAxis; |
| 47 | SkScalar fAngle; |
| 48 | }; |
| 49 | |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 50 | RotateInfo computeRotationInfo(SkV2 a, SkV2 b) const { |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 51 | SkV3 u = this->computeUnitV3(a); |
| 52 | SkV3 v = this->computeUnitV3(b); |
| 53 | SkV3 axis = u.cross(v); |
Mike Reed | 2382366 | 2020-02-19 17:07:04 -0500 | [diff] [blame] | 54 | SkScalar length = axis.length(); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 55 | |
Mike Reed | 2382366 | 2020-02-19 17:07:04 -0500 | [diff] [blame] | 56 | if (!SkScalarNearlyZero(length)) { |
| 57 | return {axis * (1.0f / length), acos(u.dot(v))}; |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 58 | } |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 59 | return {{0, 0, 0}, 0}; |
| 60 | } |
| 61 | |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 62 | SkM44 computeRotation(SkV2 a, SkV2 b) const { |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 63 | auto [axis, angle] = this->computeRotationInfo(a, b); |
| 64 | return SkM44::Rotate(axis, angle); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 65 | } |
| 66 | }; |
| 67 | |
Mike Reed | ee3216d | 2020-01-17 17:35:04 -0500 | [diff] [blame] | 68 | static SkM44 inv(const SkM44& m) { |
| 69 | SkM44 inverse; |
| 70 | SkAssertResult(m.invert(&inverse)); |
| 71 | return inverse; |
| 72 | } |
| 73 | |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 74 | class Sample3DView : public Sample { |
| 75 | protected: |
| 76 | float fNear = 0.05f; |
| 77 | float fFar = 4; |
| 78 | float fAngle = SK_ScalarPI / 12; |
| 79 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 80 | SkV3 fEye { 0, 0, 1.0f/tan(fAngle/2) - 1 }; |
| 81 | SkV3 fCOA { 0, 0, 0 }; |
| 82 | SkV3 fUp { 0, 1, 0 }; |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 83 | |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 84 | public: |
Mike Reed | ee0a03a | 2020-01-14 16:44:47 -0500 | [diff] [blame] | 85 | void saveCamera(SkCanvas* canvas, const SkRect& area, SkScalar zscale) { |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 86 | SkM44 camera = Sk3LookAt(fEye, fCOA, fUp), |
| 87 | perspective = Sk3Perspective(fNear, fFar, fAngle), |
| 88 | viewport = SkM44::Translate(area.centerX(), area.centerY(), 0) * |
| 89 | SkM44::Scale(area.width()*0.5f, area.height()*0.5f, zscale); |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 90 | |
Mike Reed | ee3216d | 2020-01-17 17:35:04 -0500 | [diff] [blame] | 91 | // want "world" to be in our big coordinates (e.g. area), so apply this inverse |
| 92 | // as part of our "camera". |
Mike Reed | c43f2a0 | 2020-01-16 14:54:34 -0500 | [diff] [blame] | 93 | canvas->experimental_saveCamera(viewport * perspective, camera * inv(viewport)); |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 94 | } |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 95 | }; |
| 96 | |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 97 | struct Face { |
| 98 | SkScalar fRx, fRy; |
Mike Reed | ee3216d | 2020-01-17 17:35:04 -0500 | [diff] [blame] | 99 | SkColor fColor; |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 100 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 101 | static SkM44 T(SkScalar x, SkScalar y, SkScalar z) { |
| 102 | return SkM44::Translate(x, y, z); |
Mike Reed | 78184a3 | 2020-01-25 03:20:18 +0000 | [diff] [blame] | 103 | } |
| 104 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 105 | static SkM44 R(SkV3 axis, SkScalar rad) { |
| 106 | return SkM44::Rotate(axis, rad); |
Mike Reed | 78184a3 | 2020-01-25 03:20:18 +0000 | [diff] [blame] | 107 | } |
| 108 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 109 | SkM44 asM44(SkScalar scale) const { |
| 110 | return R({0,1,0}, fRy) * R({1,0,0}, fRx) * T(0, 0, scale); |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 111 | } |
| 112 | }; |
| 113 | |
Mike Reed | 7543587 | 2020-01-13 21:15:06 -0500 | [diff] [blame] | 114 | static bool front(const SkM44& m) { |
Florin Malita | d589916 | 2020-02-04 10:06:24 -0500 | [diff] [blame] | 115 | SkM44 m2(SkM44::kUninitialized_Constructor); |
| 116 | if (!m.invert(&m2)) { |
| 117 | m2.setIdentity(); |
| 118 | } |
Mike Reed | 7543587 | 2020-01-13 21:15:06 -0500 | [diff] [blame] | 119 | /* |
| 120 | * Classically we want to dot the transpose(inverse(ctm)) with our surface normal. |
| 121 | * In this case, the normal is known to be {0, 0, 1}, so we only actually need to look |
| 122 | * at the z-scale of the inverse (the transpose doesn't change the main diagonal, so |
| 123 | * no need to actually transpose). |
| 124 | */ |
Mike Reed | 07d32b4 | 2020-01-23 11:06:20 -0500 | [diff] [blame] | 125 | return m2.rc(2,2) > 0; |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 126 | } |
| 127 | |
| 128 | const Face faces[] = { |
Mike Reed | ee3216d | 2020-01-17 17:35:04 -0500 | [diff] [blame] | 129 | { 0, 0, SK_ColorRED }, // front |
| 130 | { 0, SK_ScalarPI, SK_ColorGREEN }, // back |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 131 | |
Mike Reed | ee3216d | 2020-01-17 17:35:04 -0500 | [diff] [blame] | 132 | { SK_ScalarPI/2, 0, SK_ColorBLUE }, // top |
| 133 | {-SK_ScalarPI/2, 0, SK_ColorCYAN }, // bottom |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 134 | |
Mike Reed | ee3216d | 2020-01-17 17:35:04 -0500 | [diff] [blame] | 135 | { 0, SK_ScalarPI/2, SK_ColorMAGENTA }, // left |
| 136 | { 0,-SK_ScalarPI/2, SK_ColorYELLOW }, // right |
Mike Reed | 69ace2a | 2020-01-11 15:57:14 -0500 | [diff] [blame] | 137 | }; |
| 138 | |
Mike Reed | ee3216d | 2020-01-17 17:35:04 -0500 | [diff] [blame] | 139 | #include "include/effects/SkRuntimeEffect.h" |
| 140 | |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 141 | struct LightOnSphere { |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 142 | SkV2 fLoc; |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 143 | SkScalar fDistance; |
| 144 | SkScalar fRadius; |
| 145 | |
| 146 | SkV3 computeWorldPos(const VSphere& s) const { |
| 147 | return s.computeUnitV3(fLoc) * fDistance; |
| 148 | } |
| 149 | |
| 150 | void draw(SkCanvas* canvas) const { |
| 151 | SkPaint paint; |
| 152 | paint.setAntiAlias(true); |
| 153 | paint.setColor(SK_ColorWHITE); |
| 154 | canvas->drawCircle(fLoc.x, fLoc.y, fRadius + 2, paint); |
| 155 | paint.setColor(SK_ColorBLACK); |
| 156 | canvas->drawCircle(fLoc.x, fLoc.y, fRadius, paint); |
| 157 | } |
| 158 | }; |
| 159 | |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 160 | #include "include/core/SkTime.h" |
| 161 | |
| 162 | class RotateAnimator { |
| 163 | SkV3 fAxis = {0, 0, 0}; |
| 164 | SkScalar fAngle = 0, |
| 165 | fPrevAngle = 1234567; |
| 166 | double fNow = 0, |
| 167 | fPrevNow = 0; |
| 168 | |
| 169 | SkScalar fAngleSpeed = 0, |
| 170 | fAngleSign = 1; |
| 171 | |
| 172 | static constexpr double kSlowDown = 4; |
| 173 | static constexpr SkScalar kMaxSpeed = 16; |
| 174 | |
| 175 | public: |
| 176 | void update(SkV3 axis, SkScalar angle) { |
| 177 | if (angle != fPrevAngle) { |
| 178 | fPrevAngle = fAngle; |
| 179 | fAngle = angle; |
| 180 | |
| 181 | fPrevNow = fNow; |
| 182 | fNow = SkTime::GetSecs(); |
| 183 | |
| 184 | fAxis = axis; |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | SkM44 rotation() { |
| 189 | if (fAngleSpeed > 0) { |
| 190 | double now = SkTime::GetSecs(); |
| 191 | double dtime = now - fPrevNow; |
| 192 | fPrevNow = now; |
| 193 | double delta = fAngleSign * fAngleSpeed * dtime; |
| 194 | fAngle += delta; |
| 195 | fAngleSpeed -= kSlowDown * dtime; |
| 196 | if (fAngleSpeed < 0) { |
| 197 | fAngleSpeed = 0; |
| 198 | } |
| 199 | } |
| 200 | return SkM44::Rotate(fAxis, fAngle); |
| 201 | |
| 202 | } |
| 203 | |
| 204 | void start() { |
| 205 | if (fPrevNow != fNow) { |
| 206 | fAngleSpeed = (fAngle - fPrevAngle) / (fNow - fPrevNow); |
| 207 | fAngleSign = fAngleSpeed < 0 ? -1 : 1; |
| 208 | fAngleSpeed = std::min(kMaxSpeed, std::abs(fAngleSpeed)); |
| 209 | } else { |
| 210 | fAngleSpeed = 0; |
| 211 | } |
| 212 | fPrevNow = SkTime::GetSecs(); |
| 213 | fAngle = 0; |
| 214 | } |
| 215 | |
| 216 | void reset() { |
| 217 | fAngleSpeed = 0; |
| 218 | fAngle = 0; |
| 219 | fPrevAngle = 1234567; |
| 220 | } |
Mike Reed | fab6198 | 2020-02-21 13:25:12 -0500 | [diff] [blame] | 221 | |
| 222 | bool isAnimating() const { return fAngleSpeed != 0; } |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 223 | }; |
| 224 | |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 225 | class SampleCubeBase : public Sample3DView { |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 226 | enum { |
| 227 | DX = 400, |
| 228 | DY = 300 |
| 229 | }; |
| 230 | |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 231 | SkM44 fWorldToClick, |
| 232 | fClickToWorld; |
| 233 | |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 234 | SkM44 fRotation; // part of model |
| 235 | |
| 236 | RotateAnimator fRotateAnimator; |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 237 | |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 238 | protected: |
| 239 | enum Flags { |
| 240 | kCanRunOnCPU = 1 << 0, |
| 241 | kShowLightDome = 1 << 1, |
| 242 | }; |
| 243 | |
| 244 | LightOnSphere fLight = {{200 + DX, 200 + DY}, 800, 12}; |
| 245 | |
| 246 | VSphere fSphere; |
| 247 | Flags fFlags; |
| 248 | |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 249 | public: |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 250 | SampleCubeBase(Flags flags) |
| 251 | : fSphere({200 + DX, 200 + DY}, 400) |
| 252 | , fFlags(flags) |
| 253 | {} |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 254 | |
| 255 | bool onChar(SkUnichar uni) override { |
| 256 | switch (uni) { |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 257 | case 'Z': fLight.fDistance += 10; return true; |
| 258 | case 'z': fLight.fDistance -= 10; return true; |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 259 | } |
| 260 | return this->Sample3DView::onChar(uni); |
| 261 | } |
| 262 | |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 263 | virtual void drawContent(SkCanvas* canvas, SkColor, int index, bool drawFront) = 0; |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 264 | |
| 265 | void setClickToWorld(SkCanvas* canvas, const SkM44& clickM) { |
Mike Reed | 46f5c5f | 2020-02-20 15:42:29 -0500 | [diff] [blame] | 266 | auto l2d = canvas->getLocalToDevice(); |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 267 | fWorldToClick = inv(clickM) * l2d; |
| 268 | fClickToWorld = inv(fWorldToClick); |
| 269 | } |
| 270 | |
| 271 | void onDrawContent(SkCanvas* canvas) override { |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 272 | if (!canvas->getGrContext() && !(fFlags & kCanRunOnCPU)) { |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 273 | return; |
| 274 | } |
Mike Reed | 46f5c5f | 2020-02-20 15:42:29 -0500 | [diff] [blame] | 275 | SkM44 clickM = canvas->getLocalToDevice(); |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 276 | |
| 277 | canvas->save(); |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 278 | canvas->translate(DX, DY); |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 279 | |
| 280 | this->saveCamera(canvas, {0, 0, 400, 400}, 200); |
| 281 | |
| 282 | this->setClickToWorld(canvas, clickM); |
| 283 | |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 284 | for (bool drawFront : {false, true}) { |
| 285 | int index = 0; |
| 286 | for (auto f : faces) { |
| 287 | SkAutoCanvasRestore acr(canvas, true); |
| 288 | |
| 289 | SkM44 trans = SkM44::Translate(200, 200, 0); // center of the rotation |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 290 | SkM44 m = fRotateAnimator.rotation() * fRotation * f.asM44(200); |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 291 | |
Mike Reed | 46f5c5f | 2020-02-20 15:42:29 -0500 | [diff] [blame] | 292 | canvas->concat44(trans * m * inv(trans)); |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 293 | this->drawContent(canvas, f.fColor, index++, drawFront); |
| 294 | } |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 295 | } |
| 296 | |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 297 | canvas->restore(); // camera |
| 298 | canvas->restore(); // center the content in the window |
| 299 | |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 300 | if (fFlags & kShowLightDome){ |
| 301 | fLight.draw(canvas); |
| 302 | |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 303 | SkPaint paint; |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 304 | paint.setAntiAlias(true); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 305 | paint.setStyle(SkPaint::kStroke_Style); |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 306 | paint.setColor(0x40FF0000); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 307 | canvas->drawCircle(fSphere.fCenter.x, fSphere.fCenter.y, fSphere.fRadius, paint); |
| 308 | canvas->drawLine(fSphere.fCenter.x, fSphere.fCenter.y - fSphere.fRadius, |
| 309 | fSphere.fCenter.x, fSphere.fCenter.y + fSphere.fRadius, paint); |
| 310 | canvas->drawLine(fSphere.fCenter.x - fSphere.fRadius, fSphere.fCenter.y, |
| 311 | fSphere.fCenter.x + fSphere.fRadius, fSphere.fCenter.y, paint); |
| 312 | } |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 313 | } |
| 314 | |
| 315 | Click* onFindClickHandler(SkScalar x, SkScalar y, skui::ModifierKey modi) override { |
Mike Reed | 415cace | 2020-02-21 12:03:49 -0500 | [diff] [blame] | 316 | SkV2 p = fLight.fLoc - SkV2{x, y}; |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 317 | if (p.length() <= fLight.fRadius) { |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 318 | Click* c = new Click(); |
| 319 | c->fMeta.setS32("type", 0); |
| 320 | return c; |
| 321 | } |
| 322 | if (fSphere.contains({x, y})) { |
| 323 | Click* c = new Click(); |
| 324 | c->fMeta.setS32("type", 1); |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 325 | |
| 326 | fRotation = fRotateAnimator.rotation() * fRotation; |
| 327 | fRotateAnimator.reset(); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 328 | return c; |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 329 | } |
| 330 | return nullptr; |
| 331 | } |
| 332 | bool onClick(Click* click) override { |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 333 | #if 0 |
| 334 | auto L = fWorldToClick * fLight.fPos; |
| 335 | SkPoint c = project(fClickToWorld, {click->fCurr.fX, click->fCurr.fY, L.z/L.w, 1}); |
| 336 | fLight.update(c.fX, c.fY); |
| 337 | #endif |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 338 | if (click->fMeta.hasS32("type", 0)) { |
Mike Reed | 2d4a28e | 2020-01-25 22:39:43 -0500 | [diff] [blame] | 339 | fLight.fLoc = fSphere.pinLoc({click->fCurr.fX, click->fCurr.fY}); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 340 | return true; |
| 341 | } |
| 342 | if (click->fMeta.hasS32("type", 1)) { |
| 343 | if (click->fState == skui::InputState::kUp) { |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 344 | fRotation = fRotateAnimator.rotation() * fRotation; |
| 345 | fRotateAnimator.start(); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 346 | } else { |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 347 | auto [axis, angle] = fSphere.computeRotationInfo( |
| 348 | {click->fOrig.fX, click->fOrig.fY}, |
| 349 | {click->fCurr.fX, click->fCurr.fY}); |
| 350 | fRotateAnimator.update(axis, angle); |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 351 | } |
| 352 | return true; |
| 353 | } |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 354 | return true; |
| 355 | } |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 356 | |
| 357 | bool onAnimate(double nanos) override { |
Mike Reed | fab6198 | 2020-02-21 13:25:12 -0500 | [diff] [blame] | 358 | return fRotateAnimator.isAnimating(); |
Mike Reed | 5263837 | 2020-02-19 13:30:06 -0500 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | private: |
| 362 | typedef Sample3DView INHERITED; |
Mike Reed | f0b7edf | 2020-01-18 14:21:12 -0500 | [diff] [blame] | 363 | }; |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 364 | |
| 365 | class SampleBump3D : public SampleCubeBase { |
| 366 | sk_sp<SkShader> fBmpShader, fImgShader; |
| 367 | sk_sp<SkRuntimeEffect> fEffect; |
| 368 | SkRRect fRR; |
| 369 | |
| 370 | public: |
| 371 | SampleBump3D() : SampleCubeBase(kShowLightDome) {} |
| 372 | |
| 373 | SkString name() override { return SkString("bump3d"); } |
| 374 | |
| 375 | void onOnceBeforeDraw() override { |
| 376 | fRR = SkRRect::MakeRectXY({20, 20, 380, 380}, 50, 50); |
| 377 | auto img = GetResourceAsImage("images/brickwork-texture.jpg"); |
| 378 | fImgShader = img->makeShader(SkMatrix::MakeScale(2, 2)); |
| 379 | img = GetResourceAsImage("images/brickwork_normal-map.jpg"); |
| 380 | fBmpShader = img->makeShader(SkMatrix::MakeScale(2, 2)); |
| 381 | |
| 382 | const char code[] = R"( |
| 383 | in fragmentProcessor color_map; |
| 384 | in fragmentProcessor normal_map; |
| 385 | |
| 386 | uniform float4x4 localToWorld; |
| 387 | uniform float4x4 localToWorldAdjInv; |
| 388 | uniform float3 lightPos; |
| 389 | |
| 390 | float3 convert_normal_sample(half4 c) { |
| 391 | float3 n = 2 * c.rgb - 1; |
| 392 | n.y = -n.y; |
| 393 | return n; |
| 394 | } |
| 395 | |
| 396 | void main(float2 p, inout half4 color) { |
| 397 | float3 norm = convert_normal_sample(sample(normal_map, p)); |
| 398 | float3 plane_norm = normalize(localToWorld * float4(norm, 0)).xyz; |
| 399 | |
| 400 | float3 plane_pos = (localToWorld * float4(p, 0, 1)).xyz; |
| 401 | float3 light_dir = normalize(lightPos - plane_pos); |
| 402 | |
| 403 | float ambient = 0.2; |
| 404 | float dp = dot(plane_norm, light_dir); |
| 405 | float scale = min(ambient + max(dp, 0), 1); |
| 406 | |
| 407 | color = sample(color_map, p) * half4(float4(scale, scale, scale, 1)); |
| 408 | } |
| 409 | )"; |
| 410 | auto [effect, error] = SkRuntimeEffect::Make(SkString(code)); |
| 411 | if (!effect) { |
| 412 | SkDebugf("runtime error %s\n", error.c_str()); |
| 413 | } |
| 414 | fEffect = effect; |
| 415 | } |
| 416 | |
| 417 | void drawContent(SkCanvas* canvas, SkColor color, int index, bool drawFront) override { |
Mike Reed | 46f5c5f | 2020-02-20 15:42:29 -0500 | [diff] [blame] | 418 | if (!drawFront || !front(canvas->getLocalToDevice())) { |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 419 | return; |
| 420 | } |
| 421 | |
| 422 | auto adj_inv = [](const SkM44& m) { |
| 423 | SkM44 inv; |
| 424 | SkAssertResult(m.invert(&inv)); |
| 425 | return inv.transpose(); |
| 426 | }; |
| 427 | |
| 428 | struct Uniforms { |
| 429 | SkM44 fLocalToWorld; |
| 430 | SkM44 fLocalToWorldAdjInv; |
| 431 | SkV3 fLightPos; |
| 432 | } uni; |
| 433 | uni.fLocalToWorld = canvas->experimental_getLocalToWorld(); |
| 434 | uni.fLocalToWorldAdjInv = adj_inv(uni.fLocalToWorld); |
| 435 | uni.fLightPos = fLight.computeWorldPos(fSphere); |
| 436 | |
| 437 | sk_sp<SkData> data = SkData::MakeWithCopy(&uni, sizeof(uni)); |
| 438 | sk_sp<SkShader> children[] = { fImgShader, fBmpShader }; |
| 439 | |
| 440 | SkPaint paint; |
| 441 | paint.setColor(color); |
| 442 | paint.setShader(fEffect->makeShader(data, children, 2, nullptr, true)); |
| 443 | |
| 444 | canvas->drawRRect(fRR, paint); |
| 445 | } |
| 446 | }; |
Mike Reed | e580995 | 2020-01-25 20:42:51 -0500 | [diff] [blame] | 447 | DEF_SAMPLE( return new SampleBump3D; ) |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 448 | |
| 449 | #include "modules/skottie/include/Skottie.h" |
| 450 | |
| 451 | class SampleSkottieCube : public SampleCubeBase { |
| 452 | sk_sp<skottie::Animation> fAnim[6]; |
| 453 | |
| 454 | public: |
| 455 | SampleSkottieCube() : SampleCubeBase(kCanRunOnCPU) {} |
| 456 | |
| 457 | SkString name() override { return SkString("skottie3d"); } |
| 458 | |
| 459 | void onOnceBeforeDraw() override { |
| 460 | const char* files[] = { |
| 461 | "skottie/skottie-chained-mattes.json", |
| 462 | "skottie/skottie-gradient-ramp.json", |
| 463 | "skottie/skottie_sample_2.json", |
| 464 | "skottie/skottie-3d-3planes.json", |
| 465 | "skottie/skottie-text-animator-4.json", |
| 466 | "skottie/skottie-motiontile-effect-phase.json", |
| 467 | |
| 468 | }; |
| 469 | for (unsigned i = 0; i < SK_ARRAY_COUNT(files); ++i) { |
| 470 | if (auto stream = GetResourceAsStream(files[i])) { |
| 471 | fAnim[i] = skottie::Animation::Make(stream.get()); |
| 472 | } |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | void drawContent(SkCanvas* canvas, SkColor color, int index, bool drawFront) override { |
Mike Reed | 46f5c5f | 2020-02-20 15:42:29 -0500 | [diff] [blame] | 477 | if (!drawFront || !front(canvas->getLocalToDevice())) { |
Mike Reed | cfee8ee | 2020-02-18 13:05:45 -0500 | [diff] [blame] | 478 | return; |
| 479 | } |
| 480 | |
| 481 | SkPaint paint; |
| 482 | paint.setColor(color); |
| 483 | SkRect r = {0, 0, 400, 400}; |
| 484 | canvas->drawRect(r, paint); |
| 485 | fAnim[index]->render(canvas, &r); |
| 486 | } |
| 487 | |
| 488 | bool onAnimate(double nanos) override { |
| 489 | for (auto& anim : fAnim) { |
| 490 | SkScalar dur = anim->duration(); |
| 491 | SkScalar t = fmod(1e-9 * nanos, dur) / dur; |
| 492 | anim->seek(t); |
| 493 | } |
| 494 | return true; |
| 495 | } |
| 496 | }; |
| 497 | DEF_SAMPLE( return new SampleSkottieCube; ) |