Programming 4 in PHP need a bit help

[Nikousek]

Hi
at first i would like to ask if this is possible to do in PHP via GD library I assume so but i need to ask because
i am a bit stucked...

I have a script that saves every line and every arc into specific array and than I loop through each of those arrays and I draw lines/arcs with imagearc/imageline by GD library.I think I do everything correctly(but obviously i dont )
If there would be totally miss-shapes i would understand but some characters are fairly readable

Could anyone give me a hint if you see what is wrong ?

Here is the code for generating arcs and lines ...

Code: Select all

Code Removed

i even tried to make rounded values by floor byceause i dont know what is wrong :-/

and here is the image


or this one


Thanks for any hint
Dominik

[BhaaL]

Keep in mind how coordinate systems look like, and what specifics the canvas you draw on may have.

[Nikousek]

Keep in mind how coordinate systems look like, and what specifics the canvas you draw on may have.

Well this confused me a bit more than i was before

but still if I can recognize some characters perfectly on the canvas and I am using cycles to draw where could be wrong in coordinates...

Maybe i am drawing it bad in some way but it is hard for me I never used GD for drawing before , my first experience but i like this challenge much but I appreciate anyadvice

[BhaaL]

You should have noticed most of them are upside-down or mirrored. The plain cartesian coordinate system goes up/right for +x/+y - the canvas you draw on does not. It spans down/right.

[Nikousek]

You should have noticed most of them are upside-down or mirrored. The plain cartesian coordinate system goes up/right for +x/+y - the canvas you draw on does not. It spans down/right.

why does not?

I draw lines just by setting coordinates i got from xml :-/
Every line is new and specific I dont need any +x/+y maybe i am totally lost there maybe i just dont get what do you mean

[tio]

I dont know how is it in php when you draw an image, but in some languages is [0,0] in left top corner. But in real life is [0,0] in left bottom corner. That is the reason, why somethimes you need correct some cordinates

[Nikousek]

I dont know how is it in php when you draw an image, but in some languages is [0,0] in left top corner. But in real life is [0,0] in left bottom corner. That is the reason, why somethimes you need correct some cordinates

oh thats explains everything thanks you a lot Bhaal meant the same as you but i didnt get it thanks a lot guys

I hope now i will go through

[Nikousek]

I`ve completed the mission thanks a lot guys for help