port to platformio

src/sprites/Blob.h

@@ -0,0 +1,72 @@
+#pragma once
+
+#include <ArduinoLog.h>
+
+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;
+      //Log.notice("get coords");
+      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);
+
+      //Log.notice("blob w=%d x=%d", scaledWidth, startPos.x);
+      for(uint8_t i = 0;i < scaledWidth; i++) {
+        // Blobs desaturate towards their tail
+      //Log.notice("blob i=%d w=%d x=%d", i, scaledWidth, startPos.x);
+        CHSV blobColor(m_hue, m_saturation, quadwave8((i / (double)scaledWidth) * m_brightness));
+
+        PhysicalCoordinates pos{startPos.x + (i*m_fadeDir), 0};
+
+        CRGB src(display->pixelAt(pos));
+        display->pixelAt(pos) = blend(CRGB(blobColor), src, 200);
+      }
+  }
+};