Messages

1

Graphics / Re: sf::Color multiplication not working

« on: July 27, 2020, 07:05:21 pm »

Ah ok, I though taking modulo 256 would make something range 0->255 but I guess that's not the standard.
So when multiplying I actually want my decr to be 255 and not 1.

2

Graphics / Re: sf::Color multiplication not working

« on: July 27, 2020, 04:32:44 pm »

dec1: 0 0 1
icolor: 80 80 80
mult: 0 0 0

mult=dec1*icolor produces zeroes instead of 0,0,80

3

Graphics / Re: sf::Color multiplication not working

« on: July 27, 2020, 01:13:57 pm »

Yes, thats what I ended up doing. But the docs say it should work. Also had to watch out for subtracting the transparency value.

4

Graphics / sf::Color multiplication not working

« on: July 26, 2020, 08:56:02 pm »

i: 80
start: 255 0 255
dec1: 0 0 1
icolor: 80 80 80
mult: 0 0 0
answer: 255 0 255

    sf::Color icolor(i,i,i);
    cout << "i: " << i << endl;
    cout << "start:"<< " " << static_cast<int>(map.start.r) << " " << static_cast<int>(map.start.g) << " " << static_cast<int>(map.start.b) << endl;
    cout << "dec1:"<< " " << static_cast<int>(map.decrement1.r) << " " << static_cast<int>(map.decrement1.g) << " " << static_cast<int>(map.decrement1.b) << endl;
    cout << "icolor:"<< " " << static_cast<int>(icolor.r) << " " << static_cast<int>(icolor.g) << " " << static_cast<int>(icolor.b) << endl;
    sf::Color mult = icolor*map.decrement1;
    cout << "mult:"<< " " << static_cast<int>(mult.r) << " " << static_cast<int>(mult.g) << " " << static_cast<int>(mult.b) << endl;
    sf::Color answer = map.start - icolor*map.decrement1;
    cout << "answer:"<< " " << static_cast<int>(answer.r) << " " << static_cast<int>(answer.g) << " " << static_cast<int>(answer.b) << endl;