2017-12-19 18:02:38 +00:00
|
|
|
/*
|
|
|
|
* Copyright 2017 Google Inc.
|
|
|
|
*
|
|
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
|
|
* found in the LICENSE file.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "gm.h"
|
|
|
|
#include "SkCanvas.h"
|
|
|
|
#include "SkPath.h"
|
|
|
|
#include "SkShadowUtils.h"
|
|
|
|
|
|
|
|
enum BackgroundMode {
|
|
|
|
kLightBackground,
|
|
|
|
kDarkBackground
|
|
|
|
};
|
|
|
|
|
|
|
|
static constexpr int kW = 1225;
|
|
|
|
static constexpr int kH = 550;
|
|
|
|
|
|
|
|
void draw_content(SkCanvas* canvas, BackgroundMode mode) {
|
|
|
|
const SkScalar kLightWidth = 600;
|
|
|
|
const SkScalar kAmbientAlpha = 0.03f;
|
|
|
|
const SkScalar kSpotAlpha = 0.25f;
|
|
|
|
|
|
|
|
const SkColor kColors[30] = {
|
|
|
|
// purples
|
|
|
|
0xFF3A0072, 0xFF5D0099, 0xFF7F12B2, 0xFFA02AD1, 0xFFC245E5,
|
|
|
|
0xFFE95AF9, 0xFFFC79F0, 0xFFFDA6F0, 0xFFFFCCF8, 0xFFFFE1F9,
|
|
|
|
// oranges
|
|
|
|
0xFFEA3200, 0xFFFF4E00, 0xFFFF7300, 0xFFFF9100, 0xFFFFB000,
|
|
|
|
0xFFFFCE00, 0xFFFFE000, 0xFFFFF64D, 0xFFFFF98F, 0xFFFFFBCC,
|
|
|
|
// teals
|
|
|
|
0xFF004D51, 0xFF066266, 0xFF057F7F, 0xFF009999, 0xFF00B2B2,
|
|
|
|
0xFF15CCBE, 0xFF25E5CE, 0xFF2CFFE0, 0xFF80FFEA, 0xFFB3FFF0
|
|
|
|
};
|
|
|
|
|
|
|
|
SkPaint paint;
|
|
|
|
paint.setAntiAlias(true);
|
|
|
|
if (mode == kDarkBackground) {
|
|
|
|
canvas->drawColor(0xFF111111);
|
|
|
|
} else {
|
|
|
|
canvas->drawColor(0xFFEAEAEA);
|
|
|
|
}
|
|
|
|
|
|
|
|
SkPath path;
|
|
|
|
path.addRect(SkRect::MakeXYWH(-50, -50, 100, 100));
|
|
|
|
|
|
|
|
SkPoint3 lightPos = { 75, -400, 600 };
|
|
|
|
SkPoint3 zPlaneParams = SkPoint3::Make(0, 0, 16);
|
|
|
|
SkScalar yPos = 75;
|
|
|
|
|
|
|
|
for (int row = 0; row < 3; ++row) {
|
|
|
|
lightPos.fX = 75;
|
|
|
|
SkScalar xPos = 75;
|
|
|
|
for (int col = 0; col < 10; ++col) {
|
2018-02-22 15:58:34 +00:00
|
|
|
SkColor color = kColors[10 * row + col];
|
|
|
|
paint.setColor(color);
|
2017-12-19 18:02:38 +00:00
|
|
|
|
|
|
|
canvas->save();
|
|
|
|
canvas->translate(xPos, yPos);
|
2018-02-22 15:58:34 +00:00
|
|
|
|
|
|
|
SkColor baseAmbient = SkColorSetARGB(kAmbientAlpha*SkColorGetA(color),
|
|
|
|
SkColorGetR(color), SkColorGetG(color),
|
|
|
|
SkColorGetB(color));
|
|
|
|
SkColor baseSpot = SkColorSetARGB(kSpotAlpha*SkColorGetA(color),
|
|
|
|
SkColorGetR(color), SkColorGetG(color),
|
|
|
|
SkColorGetB(color));
|
|
|
|
SkColor tonalAmbient, tonalSpot;
|
|
|
|
SkShadowUtils::ComputeTonalColors(baseAmbient, baseSpot, &tonalAmbient, &tonalSpot);
|
2017-12-19 18:02:38 +00:00
|
|
|
SkShadowUtils::DrawShadow(canvas, path, zPlaneParams,
|
2018-02-22 15:58:34 +00:00
|
|
|
lightPos, kLightWidth, tonalAmbient, tonalSpot);
|
2017-12-19 18:02:38 +00:00
|
|
|
canvas->drawPath(path, paint);
|
|
|
|
canvas->restore();
|
|
|
|
|
|
|
|
lightPos.fX += 120;
|
|
|
|
xPos += 120;
|
|
|
|
}
|
|
|
|
|
|
|
|
lightPos.fY += 200;
|
|
|
|
yPos += 200;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
DEF_SIMPLE_GM(tonalshadows_light, canvas, kW, kH) {
|
|
|
|
draw_content(canvas, kLightBackground);
|
|
|
|
}
|
|
|
|
|
|
|
|
DEF_SIMPLE_GM(tonalshadows_dark, canvas, kW, kH) {
|
|
|
|
draw_content(canvas, kDarkBackground);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|