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/*
* 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) {
SkColor color = kColors[10 * row + col];
paint.setColor(color);
canvas->save();
canvas->translate(xPos, yPos);
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);
SkShadowUtils::DrawShadow(canvas, path, zPlaneParams,
lightPos, kLightWidth, tonalAmbient, tonalSpot);
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);
}
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