Version 0.1 below in this post.
Version 0.2 in post #7.
Version 0.3 in post #9.
Version 0.4 in post #12.
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I don't know if the most famous work by Piet Mondrian is his ...
During late 1920 and 1921, Mondrian's paintings arrive at what is to casual observers their definitive and mature form. Thick black lines now separate the forms, which are larger and fewer in number, and more of the forms are left white. This was not the culmination of his artistic evolution, however. Although the refinements became subtler, Mondrian's work continued to evolve during his years in Paris.
In the 1921 paintings, many, though not all, of the black lines stop short at a seemingly arbitrary distance from the edge of the canvas although the divisions between the rectangular forms remain intact. Here, too, the rectangular forms remain mostly colored. As the years passed and Mondrian's work evolved further, he began extending all of the lines to the edges of the canvas, and he began to use fewer and fewer colored forms, favoring white instead.
An iconic source of inspiration for many like Yves Saint Laurent ...
I took a look at the style for these types of paintings. Looks as if the black lines can easily be represented on the TI screen with a thickness of 4 pixels. Going for the multicolor mode (1979) is obvious and would fit perfect, I could even add some high resolution sprites for a bit of text. One could choose bitmap mode (1981) with no vertical color limit, but still only the maximum 2 colors per 8 pixels horizontally. I chose standard graphic mode (1979). With a base 4 by 4 pixel design and only 2 colors in every 8 by 8 pixel character, it still complies - no clashes.
I'm sure it's not optimal, but I made a few routines bottom up. One for plotting a black "pixel" (4 by 4 pixels). The technique is like the one I used in this XB program. And then one for drawing lines and finally one for filling boxes.
Here's the cartridge ...
Edited by sometimes99er, Sun Feb 19, 2017 5:51 AM.