David_Hellam's Recent Projects

password

Simple password script - counts down the number of tries you have left.

refine

Demonstrates a range of user interface controls - slider, combo box and radio buttons in order to generate different number sequences.

slider

A simple example of how a slider control could be used in Scratch.

julia

Julia set fractal generator - first version

Identikitty

A simple demo of a costume changing script to make lots of combinations of cat faced features. Click on an eye, the nose or face to see it change.

cardioid1

A heart shape - this is an envelope of a cardioid. The pttern is produced by repeatedly drawing a saw-toothed star shape, but varying the angle a little each time.

Desert Cat

Trying to illustrate the idea of layers - the Scratch Cat plays a sort of hide and seek game in the desert. Not a perfect illustration - but it will do for now... The cat can be moved with the arrow keys - each time the script is run, the trees are randomly rearranged. The cat appears to move in front of or behind each tree (most of the time)...

circlestuff

A spiral in different shades... This one decreases...

groovycat

An adaptation of the Getting Started script - press the letters A-E and see what happens....

Golden Spirals

Two spiral routines.

simple mechanics

Trying to keep the mathematics as simple as possible for a gravity simulation with collision detection. I'm sure there's more I could do with this...

rainbow1

Very simple script - uses stamp to draw the rainbox as a spectrum shaded sprite is rotated - rotation centre is set to the right of the violet end of the bar.

Weather

Simple mixed media - pen draws the sun, then upon finishing broadcasts to cloud sprites to move in a random fashion. What I need to do is decide what I want to do about raindrops and a rainbow - several options exist - will have to see which one works best.

Mystic Rose Garden

A bunch of mystic roses - and some fun animation.

grid

OK - it just draws a grid - but the method it uses is quite interesting. Download the script. Try changing the numbers and see what happens...