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JUCE/examples/AnimationAppExample/Source/MainComponent.cpp

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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2017 - ROLI Ltd.
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
27th April 2017).
End User License Agreement: www.juce.com/juce-5-licence
Privacy Policy: www.juce.com/juce-5-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
#include "../JuceLibraryCode/JuceHeader.h"
//==============================================================================
/*
This component lives inside our window, and this is where you should put all
your controls and content.
*/
class MainContentComponent : public AnimatedAppComponent
{
public:
//==============================================================================
MainContentComponent()
{
setSize (800, 600);
setFramesPerSecond (60);
}
void update() override
{
// This function is called at the frequency specified by the setFramesPerSecond() call
// in the constructor. You can use it to update counters, animate values, etc.
}
void paint (Graphics& g) override
{
// (Our component is opaque, so we must completely fill the background with a solid colour)
g.fillAll (getLookAndFeel().findColour (ResizableWindow::backgroundColourId));
g.setColour (getLookAndFeel().findColour (Slider::thumbColourId));
const int fishLength = 15;
Path spinePath;
for (int i = 0; i < fishLength; ++i)
{
const float radius = 100 + 10 * std::sin (getFrameCounter() * 0.1f + i * 0.5f);
Point<float> p (getWidth() / 2.0f + 1.5f * radius * std::sin (getFrameCounter() * 0.02f + i * 0.12f),
getHeight() / 2.0f + 1.0f * radius * std::cos (getFrameCounter() * 0.04f + i * 0.12f));
// draw the circles along the fish
g.fillEllipse (p.x - i, p.y - i, 2.0f + 2.0f * i, 2.0f + 2.0f * i);
if (i == 0)
spinePath.startNewSubPath (p); // if this is the first point, start a new path..
else
spinePath.lineTo (p); // ...otherwise add the next point
}
// draw an outline around the path that we have created
g.strokePath (spinePath, PathStrokeType (4.0f));
}
void resized() override
{
// This is called when the MainContentComponent is resized.
// If you add any child components, this is where you should
// update their positions.
}
private:
//==============================================================================
// Your private member variables go here...
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MainContentComponent)
};
// (This function is called by the app startup code to create our main component)
Component* createMainContentComponent() { return new MainContentComponent(); }