bronze crown
I have a situation where I would like to create a line in a Bevy application where I need it to be selectable while not physically showing up on the screen, but then when clicked it's color changes to something that is visible. I attempted to make the line invisible by setting the color to black with Color::srgb(0.0, 0.0, 0.0) and then in a system change its color to something like Color::srgb(5.0, 0.0, 2.0). When I do this, there is no observable effect. I do get an observable effect if I set the initial color to something other than black. And interestingly enough, the magnitude of the effect is dependent on how "bright" I make the initial color.
To hilight this situation, I have taken the Bloom 2D example and added the overall effect. I have set the initial color for the box and the polygon to be black and white, resepctively. I then added three lines using prototype_lyon in the middle with initial colors of black, white, and Hdr white. Then when you hit the "L" key, you will see that the colors for the square and polygon (built using standard Bevy objects) change to red as desired, and the prototype_lyon lines change to very birght blue for the hdr white, muted blue for the white, and no visibility for the one with initial black. Please see the attached images for graphical examples of this. (Was not sure how to include them in the post in-line)
I have included the code to make the images in the following Gist for easy reference.
https://gist.github.com/justacec/0d8d093d6bf1ebd088050d59ab000d61
Thanks for any and all assistance or suggestions on this.
prisma hound