95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
// NeoPixelGamma
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// This example will display a timed series of color gradiants with gamma correction
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// and then without.
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// If the last pixel is on, then the colors being shown are color corrected.
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// It will show Red grandiant, Green grandiant, Blue grandiant, a White grandiant, and
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// then repeat.
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//
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// This will demonstrate the use of the NeoGamma class
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//
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//
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#include <NeoPixelBus.h>
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#include <NeoPixelAnimator.h>
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const uint16_t PixelCount = 16; // make sure to set this to the number of pixels in your strip
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const uint8_t PixelPin = 2; // make sure to set this to the correct pin, ignored for Esp8266
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NeoPixelBus<NeoGrbFeature, Neo800KbpsMethod> strip(PixelCount, PixelPin);
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// for esp8266 omit the pin
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//NeoPixelBus<NeoGrbFeature, Neo800KbpsMethod> strip(PixelCount);
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// uncomment only one of these to compare memory use or speed
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//
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// NeoGamma<NeoGammaEquationMethod> colorGamma;
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NeoGamma<NeoGammaTableMethod> colorGamma;
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void DrawPixels(bool corrected, HslColor startColor, HslColor stopColor)
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{
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for (uint16_t index = 0; index < strip.PixelCount() - 1; index++)
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{
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float progress = index / static_cast<float>(strip.PixelCount() - 2);
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RgbColor color = HslColor::LinearBlend<NeoHueBlendShortestDistance>(startColor, stopColor, progress);
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if (corrected)
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{
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color = colorGamma.Correct(color);
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}
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strip.SetPixelColor(index, color);
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}
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// use the last pixel to indicate if we are showing corrected colors or not
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if (corrected)
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{
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strip.SetPixelColor(strip.PixelCount() - 1, RgbColor(64));
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}
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else
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{
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strip.SetPixelColor(strip.PixelCount() - 1, RgbColor(0));
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}
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strip.Show();
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}
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void setup()
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{
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strip.Begin();
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strip.Show();
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}
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void loop()
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{
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HslColor startColor;
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HslColor stopColor;
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// red color
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startColor = HslColor(0.0f, 1.0f, 0.0f);
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stopColor = HslColor(0.0f, 1.0f, 0.5f);
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DrawPixels(true, startColor, stopColor);
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delay(5000);
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DrawPixels(false, startColor, stopColor);
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delay(5000);
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// green color
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startColor = HslColor(0.33f, 1.0f, 0.0f);
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stopColor = HslColor(0.33f, 1.0f, 0.5f);
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DrawPixels(true, startColor, stopColor);
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delay(5000);
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DrawPixels(false, startColor, stopColor);
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delay(5000);
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// blue color
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startColor = HslColor(0.66f, 1.0f, 0.0f);
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stopColor = HslColor(0.66f, 1.0f, 0.5f);
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DrawPixels(true, startColor, stopColor);
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delay(5000);
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DrawPixels(false, startColor, stopColor);
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delay(5000);
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// white color
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startColor = HslColor(0.0f, 0.0f, 0.0f);
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stopColor = HslColor(0.0f, 0.0f, 0.5f);
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DrawPixels(true, startColor, stopColor);
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delay(5000);
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DrawPixels(false, startColor, stopColor);
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delay(5000);
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} |