Using string in tint

Programming Questions

palmkenl

in Programming Questions • 10 months ago

String
lightingString;
void draw() {
image(temperat,0,0);
colorMode(HSB);
tint(lightingString,180,LBrightness);

I want to use a RGB to hex converted value in tint, but it won't accept it. Is there any way I can use the converted RGB value in tint?

Replies(5)

PhiLho

Re: Using string in tint

10 months ago

See the unhex() function, if I understood correctly your question.

palmkenl

Re: Using string in tint

10 months ago

No, it's not.

The user can set a Red, Green and Blue value, those have to be converted into hex.

Then, the hex color value has to be applied to a tint. Note: the hex color value is a string.

tint() only accepts, when using HSB mode, colors like these: #000AFC

Meaning, the function used would look like:

tint(#000AFC,180,LBrightness);

However, since the value that is supposed to be placed at #000AFC is a string, it won't work.

I want something like this:

String
lightingString=000AFC; //Note: hex'ed colors don't have a #, which it does require
tint(#lightingString,180,LBrightness); //I guess the # has to be added then... Doesn't work anyway.

Basically, RGB -> hex (string) -> string in tint

EDIT: When I apply a reddish color for the first value, and then change it to clear blue, it stays red. Anyone know what I am doing wrong? I just changed #FA0000 to #000EFA.

PhiLho

Re: Using string in tint

10 months ago

#BDF00D isn't a string in Processing. It is a special notation, whose result is an int, a 'color' in terms of Processing.
See What is a color in Processing?

So, my answer is still valid...

palmkenl

Re: Using string in tint

10 months ago

Just found out that color(rgb) already converts everything into one row of number, which can be used.

So, thanks for the clarification.

Do you know why the tint is reddish, with any color (green, blue) used?

float
LRed = 0.200000 *100, // lighting needs to be multiplied by 100 to achieve 20.00000
LBlue = 0.300000 *100, // to be replaced with a slider
LGreen= 0.200000 *100;
color lighting =color(LRed, LGreen, LBlue);
int LBrightness=1800, // used for 'Ambient' setting
PImage temperat;//,
void setup() {
size(1297, 337); //exact size of screenshot, should be replaced with something proper
temperat=loadImage("temperat.png");
seeColor();
}
void seeColor() {
colorMode(HSB);
tint(0, 300, LBrightness);
println(lighting);
image(temperat, 0, 0);
fill(lighting);
rect(0,0,width,height);
}

PhiLho

Re: Using string in tint

10 months ago

I am not sure, but the values you use for tint() are way above the default limit of 255.