size(width, height) | Sets the dimensions of the sketch window (must be in setup()). |
setup() | Runs once at the beginning; used to set size, background, initialize variables. |
draw() | Loops continuously after setup(), used for drawing and animation. |
background(color) | Sets the background color each frame. |
fill(color) | Sets the fill color for shapes. |
stroke(color) | Sets the outline color for shapes. |
noFill() | Disables shape filling. |
noStroke() | Disables shape outlines. |
line(x1, y1, x2, y2) | Draws a line between two points. |
rect(x, y, w, h) | Draws a rectangle at (x,y) with width w and height h. |
ellipse(x, y, w, h) | Draws an ellipse (or circle if w == h). |
triangle(x1, y1, x2, y2, x3, y3) | Draws a triangle with three corner points. |
quad(x1, y1, x2, y2, x3, y3, x4, y4) | Draws a quadrilateral. |
point(x, y) | Draws a single point. |
text(str, x, y) | Draws a text string at the given position. |
textSize(size) | Sets the font size for text. |
mouseX, mouseY | Variables storing the current mouse position. |
key, keyCode | Variables holding the last pressed key. |
mousePressed() | Runs when the mouse button is pressed. |
keyPressed() | Runs when a key is pressed. |
random(max) / random(min, max) | Generates a random float between the given range. |
map(value, start1, stop1, start2, stop2) | Maps a value from one range to another. |
frameRate(fps) | Sets or returns the frame rate of draw(). |
pushMatrix() / popMatrix() | Saves and restores transformations (rotation, scale, translate). |
translate(x, y) | Moves the origin of the drawing coordinate system. |
rotate(angle) | Rotates the coordinate system. |
scale(factor) | Scales the coordinate system. |
loadImage(filename) | Loads an image from the data/ folder. |
image(img, x, y, w, h) | Draws an image at the given position and size. |
