size(300, 450);



background(255, 255, 255);
noStroke();


// Variables for the flower drawing
// The result on the right-hand side of the assignment is converted
// to integer as the coordinates of the center of the flower is defined as
// of type integer
int flowerCenterX = (int)(width * 0.5);
int flowerCenterY = (int)(height * 0.3);

int pistilSize = 30;

// The color of the pistil is pink
fill(245, 190, 190);
ellipse(flowerCenterX, flowerCenterY, pistilSize, pistilSize);


// Distance from the pistil to the petals
int dist = 50;
// The first petal is vertically aligned to the center of the flower
// 90 degree in radians
float startingAngle = 0;
// Number of petals used
int numberOfPetals = 5;

// Angle separating each petal around the center; (2*PI = 360 degrees)
// CCW: negative in Processing
float angleIncrement = -2 * PI/numberOfPetals;

float petal1X = flowerCenterX + dist * cos(startingAngle);
float petal1Y = flowerCenterY + dist * sin(startingAngle);

// Next petal, beside petal1, counterclockwise 
float nextAngle = startingAngle + angleIncrement;
float petal2X = flowerCenterX + dist * cos(nextAngle);
float petal2Y = flowerCenterY + dist * sin(nextAngle);

// Next petal, beside petal2R
nextAngle = startingAngle + 2 * angleIncrement;
float petal3X = flowerCenterX + dist * cos(nextAngle);
float petal3Y = flowerCenterY + dist * sin(nextAngle);

nextAngle = startingAngle + 3 * angleIncrement;
float petal4X = flowerCenterX + dist * cos(nextAngle);
float petal4Y = flowerCenterY + dist * sin(nextAngle);

// Next petal...
nextAngle = startingAngle + 4 * angleIncrement;
float petal5X = flowerCenterX + dist * cos(nextAngle);
float petal5Y = flowerCenterY + dist * sin(nextAngle);

 
// The fill colour is changed to yellow
fill(250, 250, 140);
// Draw an ellipse at the petal1 location. 
// What is the width and height of that ellipse?
ellipse(petal1X, petal1Y, 1.4 * pistilSize, 1.4 * pistilSize);

// Draw petals 
ellipse(petal2X, petal2Y, 1.4 * pistilSize, 1.4 * pistilSize);
ellipse(petal3X, petal3Y, 1.4 * pistilSize, 1.4 * pistilSize);

// Draw petals on the left side
ellipse(petal4X, petal4Y, 1.4 * pistilSize, 1.4 * pistilSize);
ellipse(petal5X, petal5Y, 1.4 * pistilSize, 1.4 * pistilSize);




// for debugging
//stroke(0, 0, 0);
//strokeWeight(10);
//point(flowerCenterX, flowerCenterY);
//println(flowerCenterX + " " + flowerCenterY);
//println(startingAngle + " " + angleIncrement);