Cos and Sin for Wavey Text?

[Swos2009]

I have started to make cos and sin to make the wavey text but I have managed make the text go up and down....

like this

Code: Select all

     angle=angle+1
    
     DrawText(x,50+4*Sin(angle), Text$, RGB(255,255,255))

my questions is how do i make wavey text like you see in amiga demo?

[Blood]

Draw the text to an image and then chop that image up into thin vertical slices and move each one independently to achieve the effect.

[Swos2009]

Draw the text to an image and then chop that image up into thin vertical slices and move each one independently to achieve the effect.

I am sorry but I dont know how to achive these... I would like to make sinus scroller but i dont how to do it

could someone show me the code how to achive it pls?

[djes]

Where would be the fun, then? Just look at a demo and try to do it by yourself... :/

[Kaeru Gaman]

plotting a function means, to draw points on the screen in that way, that the y coordinate is determed by the function value correcponding to the x value.
in case of trigonometrical functions, the x coordinate means the angle you input into the function.

so, start by programming a loop that counts the x coordinates, calculate the functional value from this x, and take the result as y coordinate.

keep in mind, that the sinus functions in PB work upon radiant values, so the waves have a phase of 2pi.
that means, you'll need to devide the x value you put into the function by a high enough value.
e.g. when you put x/16 into the function, you stretch the wave to a phase of approximately 100 pixel (16 ~ 100/2pi).

[Foz]

I am sorry but I dont know how to achive these... I would like to make sinus scroller but i dont how to do it

could someone show me the code how to achive it pls?

When you originally asked about an Amiga demo, I gave you a link to a post - that still has a working demo, complete with text bitmap chopping, rotating, sine wave coasting & scrolling.