Andy Li's Blog

The fifth month of doing a piece of generative art everyday using haXe and openframeworks. As a reminder, all the pieces can be viewed from my Flickr set. Also the haXe source code for generating those images can be found in the description in the corresponding Flickr page. Here below are the selected pieces made in this month:

Drawing only part of the lines generated by midpoint displacement algorithm can give out some interesting unknown creature contours, looking into each other’s eyes.

Another arrangement. It now looks like an island.

Used a algorithm that I read from somewhere, that start with a point with some color, for each iteration the color spread to the neighbors with a little variation. I really love its oil-painting texture.

Increased the spread’s random factor, allowing it to spread a little bit backward.

Keeped changing the spread implementation. This one keep increasing its hue from the center with a probability of reseting itself (to red).

Made the spread much more unstable and let there be more than one starting point. Resetting the lightness to 0 periodically gave out interesting organic layers.

Well, a beautiful rainbow color cup water mark on tablecloth…?

Played with fractal patterns. Full of circles in different sizes and positions in ratio.

Used only small circles. Pretty cyber-looking.

Used solid-filled circles. Colorful snowflakes.

Simpler smaller patterns.

The fifth month of doing a piece of generative art everyday using haXe and openframeworks. As a reminder, all the pieces can be viewed from my Flickr set. Also the haXe source code for generating those images can be found in the description in the corresponding Flickr page. Here below are the selected pieces made in this month: Drawing only part of the lines generated by midpoint displacement algorithm can give out some interesting unknown creature contours, looking into each other's eyes. Another arrangement. It now looks like an island. Used a algorithm that I read from somewhere, that start with a point with some color, for each iteration the color spread to the neighbors with a little variation. I really love its oil-painting texture. Increased the spread's random factor, allowing it to spread a little bit backward. Keeped changing the spread implementation. This one keep increasing its hue from the center with a probability of reseting itself (to red). Made the spread much more unstable and let there be more than one starting point. Resetting the lightness to 0 periodically gave out interesting organic layers. Well, a beautiful rainbow color cup water mark on tablecloth...? Played with fractal patterns. Full of circles in different sizes and positions in ratio. Used only small circles. Pretty cyber-looking. Used solid-filled circles. Colorful snowflakes. Simpler smaller patterns.

Here comes the forth month of doing a piece of generative art everyday. Every time I ran out of ideas, forcing myself to code brought me some unexpected results.

It’s a starry night on a overcrowded planet. A simple but beautiful piece. Nothing complex there, just some random circles/rectangles placed together with a very thin layer of perlin noise as cloud. Be sure to click on it to view it in full size.

Discovered an interesting wave pattern while trying to implement midpoint displacement algorithm.

Below is a typical mountain created by midpoint displacement algorithm. Notice the sky and the mountain shares the same algorithm.

Let it displaces in color space instead of xy-plane.

Same as above but with slightly different painting method.

Changing the input lines to circular form created a perspective. It’s like the grand canyon is undergoing sandstorm.

I’ve also tried making procedural cloud from old-school perlin noise.

Applying perlin noise in some mixed strange color spaces(YUV, XYZ, HSL) instead of regular RGB.

Here comes the forth month of doing a piece of generative art everyday. Every time I ran out of ideas, forcing myself to code brought me some unexpected results. It's a starry night on a overcrowded planet. A simple but beautiful piece. Nothing complex there, just some random circles/rectangles placed together with a very thin layer of perlin noise as cloud. Be sure to click on it to view it in full size. Discovered an interesting wave pattern while trying to implement midpoint displacement algorithm. Below is a typical mountain created by midpoint displacement algorithm. Notice the sky and the mountain shares the same algorithm. Let it displaces in color space instead of xy-plane. Same as above but with slightly different painting method. Changing the input lines to circular form created a perspective. It's like the grand canyon is undergoing sandstorm. I've also tried making procedural cloud from old-school perlin noise. Applying perlin noise in some mixed strange color spaces(YUV, XYZ, HSL) instead of regular RGB.

6÷2(1+2)=?

It's a question that comes around in Facebook recently (I've also read it somewhere in the past). There are two major answers: "1" and "9".

For "1", (Assuming “multiplication by juxtaposition” has higher precedence than regular division. Whether the assumption is true, is depending on which literature is being referred to. If you don't agree on it, the answer is simply 9)

6÷(2×(1+2))
=6÷(2×3)
=6÷6
=1

For "9",

6/2*(1+2)
=6/2*3
=3*3
=9

Notice the question is interpreted differently, you can tell it from looking at the symbols. One is mathematical notation, another is program operator notation.

The difference between mathematics and programming shown above is that, they use different kind of symbols(operators), so they have different order of operation.

Google thinks that is 9.
Check it yourself.

WolframAlpha thinks that is 9.
Check it yourself.

My Casio calculator thinks that is 1.

One interesting thing is, even in programming, different programming languages may have different order of operation, ie. they have different operator precedence (or operator associativity). The difference is mostly on bitwise operations(eg. << & |), and it has been a nightmare for programmers who want to port algorithms between languages. And luckily haXe, the language I'm in love with, that outputs C++/JS/PHP and others, already abstracted the different by inserting the necessary brackets in the output automatically(see here). So I'm happily writing codes in haXe and share the same result in different platforms

6÷2(1+2)=? It's a question that comes around in Facebook recently (I've also read it somewhere in the past). There are two major answers: "1" and "9". For "1", (Assuming “multiplication by juxtaposition” has higher precedence than regular division. Whether the assumption is true, is depending on which literature is being referred to. If you don't agree on it, the answer is simply 9) 6÷(2×(1+2)) =6÷(2×3) =6÷6 =1 For "9", 6/2*(1+2) =6/2*3 =3*3 =9 Notice the question is interpreted differently, you can tell it from looking at the symbols. One is mathematical notation, another is program operator notation. The difference between mathematics and programming shown above is that, they use different kind of symbols(operators), so they have different order of operation. [caption id="attachment_1008" align="alignleft" width="200" caption="Google thinks that is 9. Check it yourself."][/caption] [caption id="attachment_1009" align="alignleft" width="200" caption="WolframAlpha thinks that is 9. Check it yourself."][/caption] [caption id="attachment_1010" align="alignleft" width="200" caption="My Casio calculator thinks that is 1."][/caption] One interesting thing is, even in programming, different programming languages may have different order of operation, ie. they have different operator precedence (or operator associativity). The difference is mostly on bitwise operations(eg. &lt;&lt; &amp; |), and it has been a nightmare for programmers who want to port algorithms between languages. And luckily haXe, the language I'm in love with, that outputs C++/JS/PHP and others, already abstracted the different by inserting the necessary brackets in the output automatically(see here). So I'm happily writing codes in haXe and share the same result in different platforms ;)