Mike Reed | a3a704a | 2020-01-10 17:21:40 -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 "gm/gm.h" |
| 9 | #include "include/core/SkCanvas.h" |
Mike Reed | a3a704a | 2020-01-10 17:21:40 -0500 | [diff] [blame] | 10 | |
| 11 | struct Info { |
| 12 | float fNear = 0.05f; |
| 13 | float fFar = 4; |
| 14 | float fAngle = SK_ScalarPI / 4; |
| 15 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 16 | SkV3 fEye { 0, 0, 1.0f/tan(fAngle/2) - 1 }; |
| 17 | SkV3 fCOA { 0, 0, 0 }; |
| 18 | SkV3 fUp { 0, 1, 0 }; |
Mike Reed | a3a704a | 2020-01-10 17:21:40 -0500 | [diff] [blame] | 19 | }; |
| 20 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 21 | static SkM44 inv(const SkM44& m) { |
Florin Malita | d589916 | 2020-02-04 10:06:24 -0500 | [diff] [blame] | 22 | SkM44 inverse(SkM44::kUninitialized_Constructor); |
| 23 | if (!m.invert(&inverse)) { |
| 24 | inverse.setIdentity(); |
| 25 | } |
Mike Reed | a3a704a | 2020-01-10 17:21:40 -0500 | [diff] [blame] | 26 | return inverse; |
| 27 | } |
| 28 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 29 | static SkM44 make_ctm(const Info& info, const SkM44& model, SkSize size) { |
| 30 | SkM44 camera, perspective, viewport; |
Mike Reed | a3a704a | 2020-01-10 17:21:40 -0500 | [diff] [blame] | 31 | |
| 32 | SkScalar w = size.width(); |
| 33 | SkScalar h = size.height(); |
| 34 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 35 | perspective = Sk3Perspective(info.fNear, info.fFar, info.fAngle); |
| 36 | camera = Sk3LookAt(info.fEye, info.fCOA, info.fUp); |
Mike Reed | a3a704a | 2020-01-10 17:21:40 -0500 | [diff] [blame] | 37 | viewport.setScale(w*0.5f, h*0.5f, 1);//.postTranslate(r.centerX(), r.centerY(), 0); |
| 38 | |
| 39 | return viewport * perspective * camera * model * inv(viewport); |
| 40 | } |
| 41 | |
| 42 | #include "include/core/SkPicture.h" |
| 43 | #include "include/core/SkPictureRecorder.h" |
| 44 | |
| 45 | static void do_draw(SkCanvas* canvas, SkColor color) { |
| 46 | SkAutoCanvasRestore acr(canvas, true); |
| 47 | |
| 48 | Info info; |
| 49 | |
Mike Reed | 00a9764 | 2020-01-25 18:42:23 -0500 | [diff] [blame] | 50 | SkM44 m = SkM44::Rotate({0, 1, 0}, SK_ScalarPI/6); |
Mike Reed | a3a704a | 2020-01-10 17:21:40 -0500 | [diff] [blame] | 51 | |
Mike Reed | d4d3b33 | 2020-01-16 16:34:34 -0500 | [diff] [blame] | 52 | canvas->experimental_concat44(make_ctm(info, m, {300, 300})); |
Mike Reed | a3a704a | 2020-01-10 17:21:40 -0500 | [diff] [blame] | 53 | |
| 54 | canvas->translate(150, 150); |
| 55 | SkPaint paint; |
| 56 | paint.setColor(color); |
| 57 | canvas->drawRect({-100, -100, 100, 100}, paint); |
| 58 | } |
| 59 | |
| 60 | /* |
| 61 | * Test calling drawables w/ translate and matrices |
| 62 | */ |
| 63 | DEF_SIMPLE_GM(sk3d_simple, real_canvas, 300, 300) { |
| 64 | do_draw(real_canvas, 0xFFFF0000); |
| 65 | |
| 66 | SkPictureRecorder recorder; |
| 67 | SkCanvas* canvas = recorder.beginRecording(300, 300); |
| 68 | |
| 69 | do_draw(canvas, 0x880000FF); |
| 70 | |
| 71 | auto pic = recorder.finishRecordingAsPicture(); |
| 72 | if (true) { |
| 73 | real_canvas->drawPicture(pic); |
| 74 | } else { |
| 75 | auto data = pic->serialize(); |
| 76 | auto pic2 = SkPicture::MakeFromData(data.get()); |
| 77 | real_canvas->drawPicture(pic2); |
| 78 | } |
| 79 | } |