Messages

1

Graphics / Re: Issue with a Y offset on viewport

« on: November 01, 2022, 07:28:13 pm »

Wow, thank you! This makes a lot more sense. Plus it's a much simpler way of setting the viewport than what I was doing.

2

Graphics / Re: Issue with a Y offset on viewport

« on: November 01, 2022, 05:48:06 pm »

Thanks for looking in to this Kojak. I think I understand what the issue would be with the Y position of the quad placement. I am just not sure what you mean by setting the view's Y position. Are you reseting the view position after the viewport has been set?

I have found that setting the center to half of the width and height sets the image in the correct position.

E,g, viewBL.setCenter(sf::Vector2f(280.f, 280.f));

I have attached a screenshot with how it looks now.

3

Graphics / Issue with a Y offset on viewport

« on: November 01, 2022, 03:41:03 am »

I am trying to do something really basic with sf::View.

On a 1280x720 pixel window, I need to place a viewport which is 560x560 with a 160px gap from the top.

What I get is this:

https://imgur.com/a/2zhiV7S

It creates the correct gap length, but it also applies a gap at the bottom

Code I wrote for the viewport:

    int viewport_bl_OffsetX = 0;
    int viewport_bl_OffsetY = 160;
    int viewport_bl_W = 560;
    int viewport_bl_H = 560;

    sf::View viewBL(sf::FloatRect(
        static_cast<float>(viewport_bl_OffsetX),
        static_cast<float>(viewport_bl_OffsetY),
        static_cast<float>(viewport_bl_W),
        static_cast<float>(viewport_bl_H)
    ));

    float viewport_bl_OffsetXRatio = static_cast<float>(viewport_bl_OffsetX) / window_W;
    float viewport_bl_OffsetYRatio = static_cast<float>(viewport_bl_OffsetY) / window_H;

    float viewport_bl_WRatio = static_cast<float>(viewport_bl_W) / window_W;
    float viewport_bl_HRatio = static_cast<float>(viewport_bl_H) / window_H;

    viewBL.setViewport(sf::FloatRect(
        viewport_bl_OffsetXRatio, // 0.00000000
        viewport_bl_OffsetYRatio, // 0.222222224
        viewport_bl_WRatio, // 0.437500000
        viewport_bl_HRatio // 0.777777791
    ));
 

The ratios seem to be correct, but I am not sure why it leaves a gap at the bottom.