lecture 4

Question 1

what code would you use to load an image?

Answer 1

img = loadImage(“placeholder.png”);

Question 2

would you load the image in draw or setup?

Answer 2

setup

Question 3

how would you draw the image?(written in code)

Answer 3

image(img, 0, 0);

Question 4

write the code to scale the image by twice its size, and make it track your mouse position
image(img, 0, 0);

Answer 4

image(img, mouseX, mouseY, img.width * 2, img.height * 2);

Question 5

what function would you use to load the image before setup?

Answer 5

preload ( )

Question 6

what image filters are available to you in openprocessing? name 3

Answer 6

Threshold, invert, grey, dilate, erode, posterize, blur

Question 7

how many pieces of information is a pixel described?

Answer 7

4 (RGBA)

Question 8

function setup(){
createCanvas(320,240);
pixelDensity(1);
}

what will the last line of code do?

Answer 8

This will make sure your canvas will only display one pixel per pixel.