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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkColorSpaceXformer.h"
#include "SkLights.h"
#include "SkReadBuffer.h"
sk_sp<SkLights> SkLights::MakeFromBuffer(SkReadBuffer& buf) {
Builder builder;
SkColor3f ambColor;
if (!buf.readScalarArray(&ambColor.fX, 3)) {
return nullptr;
}
builder.setAmbientLightColor(ambColor);
int numLights = buf.readInt();
for (int l = 0; l < numLights; ++l) {
bool isPoint = buf.readBool();
SkColor3f color;
if (!buf.readScalarArray(&color.fX, 3)) {
return nullptr;
}
SkVector3 dirOrPos;
if (!buf.readScalarArray(&dirOrPos.fX, 3)) {
return nullptr;
}
if (isPoint) {
SkScalar intensity;
intensity = buf.readScalar();
Light light = Light::MakePoint(color, dirOrPos, intensity);
builder.add(light);
} else {
Light light = Light::MakeDirectional(color, dirOrPos);
builder.add(light);
}
}
return builder.finish();
}
static SkColor3f xform_color(const SkColor3f& color, SkColorSpaceXformer* xformer) {
SkColor origColor = SkColorSetARGB(0xFF,
SkScalarRoundToInt(color.fX),
SkScalarRoundToInt(color.fY),
SkScalarRoundToInt(color.fZ));
SkColor xformedColor = xformer->apply(origColor);
return SkColor3f::Make(SkIntToScalar(SkGetPackedR32(xformedColor)),
SkIntToScalar(SkGetPackedG32(xformedColor)),
SkIntToScalar(SkGetPackedB32(xformedColor)));
}
sk_sp<SkLights> SkLights::makeColorSpace(SkColorSpaceXformer* xformer) const {
SkLights::Builder builder;
for (int i = 0; i < this->numLights(); i++) {
Light light(fLights[i].type(), xform_color(fLights[i].color(), xformer),
fLights[i].fDirOrPos, fLights[i].fIntensity);
builder.add(light);
}
builder.setAmbientLightColor(xform_color(fAmbientLightColor, xformer));
return builder.finish();
}
void SkLights::flatten(SkWriteBuffer& buf) const {
buf.writeScalarArray(&this->ambientLightColor().fX, 3);
buf.writeInt(this->numLights());
for (int l = 0; l < this->numLights(); ++l) {
const Light& light = this->light(l);
bool isPoint = Light::kPoint_LightType == light.type();
buf.writeBool(isPoint);
buf.writeScalarArray(&light.color().fX, 3);
buf.writeScalarArray(&light.dir().fX, 3);
if (isPoint) {
buf.writeScalar(light.intensity());
}
}
}
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