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Finding color of a pixel that had random coordinates

[2 Replies]
- 15-Dec-2011 04:33 AM
- Forum: Programming Questions
Hi everybody!
I need to create a program that read the color of two points on an image finding the points with random coordinates and that draw a line between the two points with the middle color between color pixel 1 and color pixel 2! I tried with this, but doesn't work!

PImage img;

PImage destinationimg;

float x1;

float y1;

float x2;

float y2;

float middlecolorpixel;

color colorpixel1;

color colorpixel2;

color linecolor;

String selectImg;

void setup() {

size (600,400);

String selectImg = selectInput();

img = loadImage(selectImg);

}

void draw() {

loadPixels ();

img.loadPixels();

image (img, 0, 0);

float x1 = random (5, width-6);

float y1 = random (5, height-6);

float x2 = random (x1 - 5, x1 + 5);

float y2 = random (y1 - 5, y1 + 5);

color colorpixel1 = get (x1, y1);

color colorpixel2 = get (x2, y2);

middlecolorpixel= ((colorpixel1 + colorpixel2)/2);

linecolor= color (middlecolorpixel);

stroke (linecolor);

line (x1, y1, x2, y2);

}

destinationimg.updatePixels();

image(destinationimg,0,0);

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