array index out of bounds
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Programming Questions
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2 years ago
What does it mean for the array index to be out of bounds?
PImage img; // the source image
int cellsize = 4; // dimensions of each cell in the grid
int cols, rows; // number of columns and rows in our system
void setup() {
size(600,600,P3D);
img = loadImage("flight patterns.jpg"); //load the image
cols =width/cellsize; // calculate # of columns
rows = height/cellsize; // calculate # of rows
}
void draw() {
background(0);
loadPixels();
// Begin loop for columns
for (int i = 0; i < cols; i++) {
//begin loop for rows
for (int j = 0; j < rows; j++) {
int x = i*cellsize + cellsize/2; // x position
int y = j*cellsize + cellsize/2; // y position
int loc = x + y*width; // pixel array location
color c = img.pixels[loc]; // grab the color
// Calculate a z position as a function of mouseX and pixel brightness
float z = (mouseX/(float)width) *brightness(img.pixels[loc]) - 100.0;
// Translate to the location, set fill and stroke, and draw the rect
pushMatrix();
translate(x,y,z);
fill(c);
noStroke();
rectMode(CENTER);
rect(0,0,cellsize,cellsize);
popMatrix();
}
}
}
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