5f865b9cf1
Additionally this CL: forces the light colors to be opaque forces the light direction to be normalized adds a raster implementation adds a gm Review URL: https://codereview.chromium.org/1245883003
176 lines
8.3 KiB
C++
176 lines
8.3 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkLightingImageFilter.h"
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#include "SkOffsetImageFilter.h"
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#include "SkPoint3.h"
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#define WIDTH 330
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#define HEIGHT 660
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namespace skiagm {
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class ImageLightingGM : public GM {
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public:
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ImageLightingGM() : fInitialized(false) {
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this->setBGColor(0xFF000000);
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}
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protected:
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SkString onShortName() override {
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return SkString("lighting");
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}
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void make_bitmap() {
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fBitmap.allocN32Pixels(100, 100);
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SkCanvas canvas(fBitmap);
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canvas.clear(0x00000000);
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SkPaint paint;
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paint.setAntiAlias(true);
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sk_tool_utils::set_portable_typeface(&paint);
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paint.setColor(0xFFFFFFFF);
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paint.setTextSize(SkIntToScalar(96));
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const char* str = "e";
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canvas.drawText(str, strlen(str), SkIntToScalar(20), SkIntToScalar(70), paint);
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}
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SkISize onISize() override {
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return SkISize::Make(WIDTH, HEIGHT);
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}
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void drawClippedBitmap(SkCanvas* canvas, const SkPaint& paint, int x, int y) {
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas->clipRect(SkRect::MakeWH(
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SkIntToScalar(fBitmap.width()), SkIntToScalar(fBitmap.height())));
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canvas->drawBitmap(fBitmap, 0, 0, &paint);
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canvas->restore();
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}
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void onDraw(SkCanvas* canvas) override {
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if (!fInitialized) {
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make_bitmap();
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fInitialized = true;
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}
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canvas->clear(sk_tool_utils::color_to_565(0xFF101010));
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SkPaint checkPaint;
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checkPaint.setColor(sk_tool_utils::color_to_565(0xFF202020));
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for (int y = 0; y < HEIGHT; y += 16) {
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for (int x = 0; x < WIDTH; x += 16) {
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canvas->save();
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canvas->translate(SkIntToScalar(x), SkIntToScalar(y));
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canvas->drawRect(SkRect::MakeXYWH(8, 0, 8, 8), checkPaint);
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canvas->drawRect(SkRect::MakeXYWH(0, 8, 8, 8), checkPaint);
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canvas->restore();
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}
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}
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SkPoint3 pointLocation = SkPoint3::Make(0, 0, SkIntToScalar(10));
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SkScalar azimuthRad = SkDegreesToRadians(SkIntToScalar(225));
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SkScalar elevationRad = SkDegreesToRadians(SkIntToScalar(5));
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SkPoint3 distantDirection = SkPoint3::Make(SkScalarMul(SkScalarCos(azimuthRad),
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SkScalarCos(elevationRad)),
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SkScalarMul(SkScalarSin(azimuthRad),
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SkScalarCos(elevationRad)),
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SkScalarSin(elevationRad));
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SkPoint3 spotLocation = SkPoint3::Make(SkIntToScalar(-10),
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SkIntToScalar(-10),
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SkIntToScalar(20));
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SkPoint3 spotTarget = SkPoint3::Make(SkIntToScalar(40), SkIntToScalar(40), 0);
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SkScalar spotExponent = SK_Scalar1;
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SkScalar cutoffAngle = SkIntToScalar(15);
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SkScalar kd = SkIntToScalar(2);
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SkScalar ks = SkIntToScalar(1);
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SkScalar shininess = SkIntToScalar(8);
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SkScalar surfaceScale = SkIntToScalar(1);
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SkColor white(0xFFFFFFFF);
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SkPaint paint;
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SkImageFilter::CropRect cropRect(SkRect::MakeXYWH(20, 10, 60, 65));
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SkImageFilter::CropRect fullSizeCropRect(SkRect::MakeXYWH(0, 0, 100, 100));
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SkAutoTUnref<SkImageFilter> noopCropped(SkOffsetImageFilter::Create(0, 0, NULL, &cropRect));
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int y = 0;
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for (int i = 0; i < 3; i++) {
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const SkImageFilter::CropRect* cr = (i == 1) ? &cropRect : (i == 2) ? &fullSizeCropRect : NULL;
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SkImageFilter* input = (i == 2) ? noopCropped.get() : NULL;
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paint.setImageFilter(SkLightingImageFilter::CreatePointLitDiffuse(pointLocation,
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white,
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surfaceScale,
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kd,
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input,
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cr))->unref();
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drawClippedBitmap(canvas, paint, 0, y);
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paint.setImageFilter(SkLightingImageFilter::CreateDistantLitDiffuse(distantDirection,
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white,
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surfaceScale,
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kd,
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input,
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cr))->unref();
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drawClippedBitmap(canvas, paint, 110, y);
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paint.setImageFilter(SkLightingImageFilter::CreateSpotLitDiffuse(spotLocation,
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spotTarget,
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spotExponent,
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cutoffAngle,
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white,
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surfaceScale,
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kd,
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input,
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cr))->unref();
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drawClippedBitmap(canvas, paint, 220, y);
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y += 110;
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paint.setImageFilter(SkLightingImageFilter::CreatePointLitSpecular(pointLocation,
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white,
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surfaceScale,
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ks,
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shininess,
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input,
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cr))->unref();
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drawClippedBitmap(canvas, paint, 0, y);
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paint.setImageFilter(SkLightingImageFilter::CreateDistantLitSpecular(distantDirection,
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white,
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surfaceScale,
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ks,
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shininess,
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input,
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cr))->unref();
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drawClippedBitmap(canvas, paint, 110, y);
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paint.setImageFilter(SkLightingImageFilter::CreateSpotLitSpecular(spotLocation,
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spotTarget,
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spotExponent,
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cutoffAngle,
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white,
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surfaceScale,
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ks,
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shininess,
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input,
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cr))->unref();
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drawClippedBitmap(canvas, paint, 220, y);
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y += 110;
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}
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}
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private:
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typedef GM INHERITED;
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SkBitmap fBitmap;
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bool fInitialized;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM( return SkNEW(ImageLightingGM); )
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}
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