Fundamentals of Programming

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# Fundamentals of Programming - PowerPoint PPT Presentation

Fundamentals of Programming. SM1204 Semester A 2012. Due date 30 Oct Collection via ACS. Assignment 1. Requirements. Create your own drawing brushes (20%) Use of &quot;if-else&quot; or &quot;for&quot; structures (20%) Use of random or noise functions (20%)

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### Fundamentalsof Programming

SM1204 Semester A 2012

Due date 30 Oct

Collection via ACS

Assignment 1
Requirements
• Create your own drawing brushes (20%)
• Use of "if-else" or "for" structures (20%)
• Use of random or noise functions (20%)
• Apply to positions / colors / sizes of elements you draw
• With basic user interaction (20%)
• e.g. mousePressed, mouseX, mouseY
• Creative graphics (20%)
Example
• http://mrdoob.com/projects/harmony/
Example - Circles

float d = dist(pmouseX, pmouseY, mouseX, mouseY);

noFill();

stroke(255);

for (inti=0; i<5; i++)

{

float s = (d+4)*(i+1);

ellipse(mouseX, mouseY, s, s);

}

Example - Grids

fill(0, 10);

noStroke();

rect(0, 0, width, height);

if (mousePressed == true)

{

int r = mouseY / 15;

int c = mouseX / 15;

fill(255);

rect(c*15+1, r*15+1, 14, 14);

}

Useful Functions & References
• dist(x1, y1, x2, y2)
• Calculates the distance between two points
• mouseX, mouseY
• the current coordinate of the mouse
• pmouseX, pmouseY
• The position of the mouse in the previous frame
• random(low, high)
• Generate random numbers (floating-point value) between low and high