PureBasic Forums - English

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

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.

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?

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

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).

Swos2009 wrote: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.