Face.cpp

#include "Face.h"
#include "Common.h"

U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE, /* clock=*/ 22, /* data= */ 21);

Face::Face(uint16_t screenWidth, uint16_t screenHeight, uint16_t eyeSize) 
	: LeftEye(*this), RightEye(*this), Blink(*this), Look(*this), Behavior(*this), Expression(*this) {

  // Unlike almost every other Arduino library (and the I2C address scanner script etc.)
  // u8g2 uses 8-bit I2C address, so we shift the 7-bit address left by one
  u8g2.setI2CAddress(0x3C<<1);
  u8g2.begin();
  u8g2.clearBuffer();

	Width = screenWidth;
	Height = screenHeight;
	EyeSize = eyeSize;

	CenterX = Width / 2;
	CenterY = Height / 2;

	LeftEye.IsMirrored = true;

  Behavior.Clear();
	Behavior.Timer.Start();
}

void Face::LookFront() {
	Look.LookAt(0.0, 0.0);
}

void Face::LookRight() {
	Look.LookAt(-1.0, 0.0);
}

void Face::LookLeft() {
	Look.LookAt(1.0, 0.0);
}

void Face::LookTop() {
	Look.LookAt(0.0, 1.0);
}

void Face::LookBottom() {
	Look.LookAt(0.0, -1.0);
}

void Face::Wait(unsigned long milliseconds) {
	unsigned long start;
	start = millis();
	while (millis() - start < milliseconds) {
		Draw();
	}
}

void Face::DoBlink() {
	Blink.Blink();
}

void Face::Update() {
	if(RandomBehavior) Behavior.Update();
	if(RandomLook) Look.Update();
	if(RandomBlink)	Blink.Update();
	Draw();
}

void Face::Draw() {
  // Clear the display
  u8g2.clearBuffer();
  // Draw left eye
	LeftEye.CenterX = CenterX - EyeSize / 2 - EyeInterDistance;
	LeftEye.CenterY = CenterY;
	LeftEye.Draw();
  // Draw right eye
	RightEye.CenterX = CenterX + EyeSize / 2 + EyeInterDistance;
	RightEye.CenterY = CenterY;
	RightEye.Draw();
  // Transfer the redrawn buffer to the display
  u8g2.sendBuffer();
}