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108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
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/**
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* @file
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* @brief Unit tests for Lens Flare effect
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* @author Jonathan Thomas <jonathan@openshot.org>
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*
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* @ref License
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*/
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// Copyright (c) 2008-2025 OpenShot Studios, LLC
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//
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// SPDX-License-Identifier: LGPL-3.0-or-later
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#include <memory>
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#include <QImage>
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#include <QColor>
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#include "Frame.h"
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#include "effects/LensFlare.h"
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#include "openshot_catch.h"
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using namespace openshot;
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// Allow Catch2 to print QColor on failure
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static std::ostream& operator<<(std::ostream& os, QColor const& c)
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{
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os << "QColor(" << c.red() << "," << c.green()
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<< "," << c.blue() << "," << c.alpha() << ")";
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return os;
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}
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// Create a small 5×5 grayscale frame
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static std::shared_ptr<Frame> makeGrayFrame()
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{
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QImage img(5, 5, QImage::Format_ARGB32);
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img.fill(QColor(100, 100, 100, 255));
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auto frame = std::make_shared<Frame>();
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*frame->GetImage() = img;
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return frame;
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}
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TEST_CASE("LensFlare brightens center pixel", "[effect][lensflare]")
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{
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LensFlare effect;
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effect.x = Keyframe(0.0);
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effect.y = Keyframe(0.0);
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effect.brightness = Keyframe(1.0);
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effect.size = Keyframe(1.0);
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effect.spread = Keyframe(0.0);
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auto frame = makeGrayFrame();
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QColor before = frame->GetImage()->pixelColor(2, 2);
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auto out = effect.GetFrame(frame, 1);
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QColor after = out->GetImage()->pixelColor(2, 2);
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CHECK(after != before);
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}
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TEST_CASE("LensFlare size controls area of effect", "[effect][lensflare]")
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{
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LensFlare small, large;
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small.x = Keyframe(0.0);
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large.x = Keyframe(0.0);
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small.y = Keyframe(0.0);
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large.y = Keyframe(0.0);
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small.brightness = Keyframe(1.0);
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large.brightness = Keyframe(1.0);
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small.spread = Keyframe(0.0);
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large.spread = Keyframe(0.0);
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small.size = Keyframe(0.2);
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large.size = Keyframe(1.0);
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auto frameSmall = makeGrayFrame();
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auto frameLarge = makeGrayFrame();
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QColor beforeSmall = frameSmall->GetImage()->pixelColor(2, 2);
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QColor beforeLarge = frameLarge->GetImage()->pixelColor(2, 2);
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auto outSmall = small.GetFrame(frameSmall, 1);
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auto outLarge = large.GetFrame(frameLarge, 1);
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QColor afterSmall = outSmall->GetImage()->pixelColor(2, 2);
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QColor afterLarge = outLarge->GetImage()->pixelColor(2, 2);
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CHECK(afterSmall == beforeSmall);
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CHECK(afterLarge != beforeLarge);
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}
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TEST_CASE("LensFlare brightness scales intensity", "[effect][lensflare]")
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{
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LensFlare low, high;
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low.x = Keyframe(0.0);
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high.x = Keyframe(0.0);
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low.y = Keyframe(0.0);
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high.y = Keyframe(0.0);
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low.size = Keyframe(1.0);
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high.size = Keyframe(1.0);
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low.spread = Keyframe(0.0);
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high.spread = Keyframe(0.0);
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low.brightness = Keyframe(0.2);
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high.brightness= Keyframe(1.0);
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auto frameLow = makeGrayFrame();
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auto frameHigh = makeGrayFrame();
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auto outLow = low.GetFrame(frameLow, 1);
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auto outHigh = high.GetFrame(frameHigh, 1);
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QColor cLow = outLow->GetImage()->pixelColor(2, 2);
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QColor cHigh = outHigh->GetImage()->pixelColor(2, 2);
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CHECK(cLow.red() < cHigh.red());
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}
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