68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
|
#pragma once
|
||
|
|
|
||
|
|
class Blob {
|
||
|
|
uint16_t m_pos;
|
||
|
|
int8_t m_velocity;
|
||
|
|
uint8_t m_hue;
|
||
|
|
int16_t m_brightness;
|
||
|
|
uint8_t m_saturation;
|
||
|
|
int8_t m_fadeDir;
|
||
|
|
public:
|
||
|
|
Blob()
|
||
|
|
: m_pos(0),
|
||
|
|
m_velocity(1),
|
||
|
|
m_hue(0),
|
||
|
|
m_brightness(1),
|
||
|
|
m_saturation(200),
|
||
|
|
m_fadeDir(1) {}
|
||
|
|
|
||
|
|
void setSaturation(uint8_t v) {
|
||
|
|
m_saturation = v;
|
||
|
|
}
|
||
|
|
|
||
|
|
void setPos(uint16_t p) {
|
||
|
|
m_pos = p;
|
||
|
|
m_brightness = p % 120 + 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void setHue(uint8_t p) {
|
||
|
|
m_hue = p;
|
||
|
|
}
|
||
|
|
|
||
|
|
void setBrightness(uint8_t p) {
|
||
|
|
m_brightness = p;
|
||
|
|
}
|
||
|
|
|
||
|
|
void setVelocity(int8_t v) {
|
||
|
|
m_velocity = v;
|
||
|
|
}
|
||
|
|
|
||
|
|
void update() {
|
||
|
|
m_pos += m_velocity;
|
||
|
|
m_hue += 1;
|
||
|
|
m_brightness += m_fadeDir;
|
||
|
|
if (m_brightness >= 255 || m_brightness <= 0) {
|
||
|
|
m_fadeDir *= -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void render(Display* display) const {
|
||
|
|
const uint8_t width = 25;
|
||
|
|
auto map = display->coordinateMapping();
|
||
|
|
// Grab the physical pixel we'll start with
|
||
|
|
PhysicalCoordinates startPos = map->virtualToPhysicalCoords({m_pos, 0});
|
||
|
|
PhysicalCoordinates endPos = map->virtualToPhysicalCoords({m_pos + width, 0});
|
||
|
|
int scaledWidth = std::abs(endPos.x - startPos.x);
|
||
|
|
|
||
|
|
for(uint8_t i = 0;i < scaledWidth; i++) {
|
||
|
|
// Blobs desaturate towards their tail
|
||
|
|
NSFastLED::CHSV blobColor(m_hue, m_saturation, NSFastLED::quadwave8((i / (double)scaledWidth) * m_brightness));
|
||
|
|
|
||
|
|
PhysicalCoordinates pos{startPos.x + (i*m_fadeDir), 0};
|
||
|
|
|
||
|
|
NSFastLED::CRGB src(display->pixelAt(pos));
|
||
|
|
display->pixelAt(pos) = NSFastLED::blend(NSFastLED::CRGB(blobColor), src, 200);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|