1. cyan, magenta, yellow, blue, red, green, black, and white are simply constants of which you can simply print what values they consist of. Caution: new values can be assigned easily.
2. set_pixel(), draw_pixel: can't see any difference. 3 arguments --> (x, y, color) Various experiments with lists and tuples (a list of pixels perhaps), always raised syntax error
3. draw_line: 5 arguments --> (x1,y1,x2,y2,color) no surprise
4. draw_polygon(): 2 arguments. -->list (or tuple) of coordinates, color. No need to repeat the first co-ordinate, the polygon simply closes in on the first point. E.g. draw_polygon([(10,10),(100,100),(10,200)],red) gives you a nice triangle, not filled, red perimeter.
5. draw_filled_polygon(): same as above. Observation: draw_filled_polygon([(0,80),(160,120),(0,80)],red) draws two triangles heading their tips to each other. the right hand triangle has a center line of the background color. This doesn't seem to occur when one of the "80" is changed to e.g. "81" or "79" - weird.
6. draw_rectangle(): arguments --> (x, y, width, height, color) . Should draw the perimeter of an rectangle - instead it draws a filled rectangle like the next one.
7. fill_rect(), draw_filled_rectangle(): can't see any difference. Arguments as above.
8. draw_circle(), draw_filled_circle(): As the name suggests either unfilled or filled circle. 4 Arguments --> (x,y, radius,color) no surprise
9. draw_arc(),draw_filled_arc(): As the name suggests either unfilled or filled arc: 6-8 arguments -->(x,y, x_radius, y_radius, angle_start, angle_end[, color[, unknown_int]] An angle of "0" denotes "east" the arc is painted clockwise. Observation ERROR: The draw_arc() doubles the angle values, while the draw_filled_arc() behaves as expected. The last argument "unknown_int" didn't show any effect with my various approaches. Color can be omitted, default is black - it's 0
10. get_pixel() doesn't return anything reasonable: 2 or 3 arguments: When invoked with 2 arguments it returns the tuple (0,0,0) when invoked with 3 arguments it returns -16777216 that equals -0x1000000
11. draw_string(): seems to be broken but does something at least. 3-6 arguments --> (x,y,text[,text_color[,bg-color[,unknown-string]]]: Observation: The "unknown_string" did nothing discernible. A background is always painted, but doesn't match the height of the text. If bg-color is omitted, my Prime selects cyan, why? If the text_color is omitted the color is black. The font is very large!
12. clear() and clear_screen() can't see any difference: Arguments 0 or 1 --> () denotes cyan, (color) whatever color you've chosen.
    

(11-30-2021 08:50 PM)Guenter Schink Wrote:  I've downloaded the last (inofficial?) update to see if something significant has changed in the Python environment. Well the <draw_filled_polygon()> function no longer lets the G2 reboot

Hope this is of use for someone. Perhaps you have a different insight. Comments, corrections are very welcome of course.

Günter

(11-30-2021 11:11 PM)toml_12953 Wrote:  Do you know if there's a command in the graphic module to let the user set screen coordinates and use those rather than pixel coordinates? I also notice the parameters are pickier than those in the hpprime module. There, you can use real parameters. In graphics you have to manually convert to int first.