Help with my color?

Programming Questions

purplestu..

in Programming Questions • 2 years ago

Hello guys, I've been thinking on how to properly set my 'generateRandomColor' function to cooperate and I'm getting nowhere. I'm aware it's getting results but they're not being used, perhaps it's a simple fix and I'm overlooking it, I don't know anymore, lol.
Basically what I'm trying to do is for the triangles and squares to have a random color.

Anyway here's my code:

float a;
float b;
float theta;
float r;
boolean square = true;

void setup()
{
size(400, 400);
background(255);
smooth();
startNewDrawing();
generateRandomColor();
}

void draw()
{

float x;
float y;

//Convert formula
r = sin (a * theta) + cos (b * theta);
x = r * cos(theta);
y = r * sin(theta);

//Muliply to lengthen lines
x = x * 75;
y = y * 75;

//Things to draw
if (square)
{
    pushMatrix();
    translate(200 , 200);
    rotate(theta);
    triangle(x, y - 5, x - 5, y + 5, x + 5, y + 5);
    theta = theta + PI/60.0;
    popMatrix();
}

else
{
    pushMatrix();
    translate(200, 200);
    rotate( theta);
    rect(x, y, 10, 10);
    theta = theta + PI/60.0;
    popMatrix();
}
}

void mousePressed()
{
    startNewDrawing();
}

void startNewDrawing()
{
    background(255);
    theta = 0;
    a = int(random(0, 21))/4.0;
    b = int(random(0, 16))/3.0;
}

//cant figure out how to make this part show up in the draw
color generateRandomColor()
{
    //color result;
    color result = color(random(0, 255), random(0, 255), random(0, 255),
    random(192, 255));

    return result;
}

void keyPressed()
{
    if(key == 's' || key == 't')
    {
      square = !square;
      startNewDrawing();
    }
}

I'm going insane studying for finals and I have this processing hwk, so any thing will be GREATLY appreciated!

Replies(1)

bjordal

Re: Help with my color?

2 years ago

float a;
float b;
float theta;
float r;
boolean square = true;
void setup(){
size(400, 400);
background(255);
smooth();
startNewDrawing();
}

void draw(){
float x;
float y;
//Convert formula
r = sin (a * theta) + cos (b * theta);
x = r * cos(theta);
y = r * sin(theta);
//Muliply to lengthen lines
x = x * 75;
y = y * 75;
fill(generateRandomColor());
//Things to draw
if (square) {
    pushMatrix();
    translate(200, 200);
    rotate(theta);
    triangle(x, y - 5, x - 5, y + 5, x + 5, y + 5); //if squide draw a triangle? wat?
    theta = theta + PI/60.0;
    popMatrix();
}
else {
    pushMatrix();
    translate(200, 200);
    rotate( theta);
    rect(x, y, 10, 10);
    theta = theta + PI/60.0;
    popMatrix();
}
}
void mousePressed(){
startNewDrawing();
}

void startNewDrawing(){
background(255);
theta = 0;
a = int(random(0, 21))/4.0;
b = int(random(0, 16))/3.0;
}
//cant figure out how to make this part show up in the draw
color generateRandomColor(){
//color result;
color result = color(random(0, 255), random(0, 255), random(0, 255),random(192, 255));
return result;
}

void keyPressed(){
if(key == 's' || key == 't')
{
    square = !square;
    startNewDrawing();
}
}

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