Triangles & Squares

int sq1_x;

int sq1_y;

int sq1_wh;

​

void setup() {

  size(805, 805);

  frameRate(50);

}

​

void draw() {

  background(255);

  sq1_x = 0;

  sq1_y = 0;

  sq1_wh = 300;

​

  // a coords

  float sq1_ax = sq1_x - (sq1_wh/2);

  float sq1_ay = sq1_y - (sq1_wh/2);

​

  // b coords

  float sq1_bx = sq1_x + (sq1_wh/2);

  float sq1_by = sq1_y - (sq1_wh/2);  

  // c coords

  float sq1_cx = sq1_x - (sq1_wh/2);

  float sq1_cy = sq1_y + (sq1_wh/2);

  // d coords

  float sq1_dx = sq1_x + (sq1_wh/2);

  float sq1_dy = sq1_y + (sq1_wh/2);  

​

  // Triangle Angles

  float A = mouseY;

  float C = 90;

  float B = 180 - (A + C);

​

​

  // Triangle Side Lengths

  float c = sq1_wh; // hypotenuse length 

  float a = round((c * sin(radians(A)))/sin(radians(C)));

  float b = round((c * sin(radians(B)))/sin(radians(C)));   //floor(sqrt(pow(c, 2) + pow(a, 2) - 2*c*a*cos(radians(B))));

​

​

  // Triangle 1 coordinates 

  float A1_x = sq1_ax;

  float A1_y = sq1_ay;

​

  float B1_x = sq1_bx;

  float B1_y = sq1_by;

​

  float C1_x = A1_x + (cos(radians(A))*b);

  float C1_y = A1_y + (sin(radians(A))*b);  

  strokeWeight(5);

  strokeJoin(ROUND);

  pushMatrix();

  translate(width/2, height/2);

  // draw square 1

  fill(232, 39, 39);

  rectMode(CENTER);

  rect(sq1_x, sq1_y, sq1_wh, sq1_wh);

  // Draw Triangles

  for (int x = 0; x < 4; x++) {

    rotate(radians(90));

    noFill();

    triangle(A1_x, A1_y, B1_x, B1_y, C1_x, C1_y);

  }

  popMatrix();

}