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72 lines
1.8 KiB
72 lines
1.8 KiB
#ifndef TILTDEMO_H
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#define TILTDEMO_H
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#include "Demo.h"
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// Define range of possible acceleration values.
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#define MIN_ACCEL -10.0
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#define MAX_ACCEL 10.0
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// Define range of colors (min color and max color) using their red, green, blue components.
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// First the min color:
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#define MIN_COLOR_RED 0xFF
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#define MIN_COLOR_GREEN 0x00
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#define MIN_COLOR_BLUE 0x00
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// Then the max color:
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#define MAX_COLOR_RED 0x00
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#define MAX_COLOR_GREEN 0x00
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#define MAX_COLOR_BLUE 0xFF
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class TiltDemo: public Demo {
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public:
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TiltDemo() { mode = 0; }
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~TiltDemo() {}
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virtual void loop() {
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// Grab the acceleration for the current mode's axis.
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float accel = 0;
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switch (mode) {
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case 0:
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accel = CircuitPlayground.motionX();
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break;
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case 1:
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accel = CircuitPlayground.motionY();
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break;
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case 2:
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accel = CircuitPlayground.motionZ();
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break;
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}
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// Now interpolate the acceleration into a color for the pixels.
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uint8_t red = (uint8_t)lerp(accel, MIN_ACCEL, MAX_ACCEL, MIN_COLOR_RED, MAX_COLOR_RED);
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uint8_t green = (uint8_t)lerp(accel, MIN_ACCEL, MAX_ACCEL, MIN_COLOR_GREEN, MAX_COLOR_GREEN);
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uint8_t blue = (uint8_t)lerp(accel, MIN_ACCEL, MAX_ACCEL, MIN_COLOR_BLUE, MAX_COLOR_BLUE);
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// Gamma correction makes LED brightness appear more linear
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red = CircuitPlayground.gamma8(red);
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green = CircuitPlayground.gamma8(green);
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blue = CircuitPlayground.gamma8(blue);
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// Light up all the pixels the interpolated color.
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for (int i=0; i<10; ++i) {
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CircuitPlayground.strip.setPixelColor(i, red, green, blue);
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}
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CircuitPlayground.strip.show();
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}
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virtual void modePress() {
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// Change the mode (axis being displayed) to a value inside 0-2 for X, Y, Z.
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mode += 1;
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if (mode > 2) {
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mode = 0;
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}
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}
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private:
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int mode;
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};
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#endif
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