EGP - egpObjectContainsPoint question

[Zylenxx]

Im dabbling with making a pinball table , right
Converting an 2d obj into full polygons and what not

Thing is however, currently; when i try to check if the nearest polygon is within a point, that outright doesnt return anything. Also, somehow doesnt return for triangles themselves created with egpTriangle.

Am i tripping or is there no support yet for these yet?

[Denneisk]

Outline objects don't work for "point-containing" functions. I don't know why, it's just how it always has been.

You might need to share a bit of code, because I don't experience this issue.

[Zylenxx]

Let me upload it to my repo, then link you here to the file where im actually trying to do it. I think that might be best

https://github.com/Zylenxx/Expression2/blob/Concepts/EGP%20Pinball.txt#L456
Within the demonstration image i do have a triangle overlapping a polygon, so it might be a Z-overlap issue; but i couldnt know for i dont do much in EGP nowadays

[Zylenxx]

ive been told that polygons only check for their bounding box when called with egpObjectContainsPoint regardless if quad, ngon or triangle, so i do need some clarification on that too

[Denneisk]

Instead of creating a new triangle, why not try to re-use the already existing polygon that you find closest to the cursor?

[Zylenxx]

I initially did use it but it gave out no information for egpContainsPoint , for no reason whatsoever, standalone tests also seem to show it doesnt work altogether, using a single triangle with egpPoly

[Denneisk]

Uh, in the code your provided, this works for me.

local Nearest = TABL1:getNearestPoly(TABL1:egpCursor(owner()))
local IsHit= TABL1:egpObjectContainsPoint(Nearest,TABL1:egpCursor(owner()))

And this simple test code will turn a poly green when you mouse over it.

@persist EGP:wirelink

EGP = entity():isWeldedTo():wirelink()
EGP:egpClear()

event tick() {
    EGP:egpPoly(1, vec2(100), vec2(100, 300), vec2(300))
    
    local Point = EGP:egpCursor(owner())
    local Hit = EGP:egpObjectContainsPoint(1, Point)
    EGP:egpColor(1, Hit ? vec(0, 255, 0) : vec(255, 0, 0))
}

Updating the triangle every tick to the cursor's position, however, does not work in this method. It's a bug that's resolved in #3357.

[Zylenxx]

ohhhhhhhhh

[Zylenxx]

so id have to switch between making the new triangle and checking if its hitting for what im trying to do?

[Denneisk]

Don't make a new triangle, just use the ones that already exist.

[Zylenxx]

< removed comment due to forgetting i set the answer already >

[Zylenxx]

I should add i am doing the check on the triangle, not the polyoutline, the polyoutline was to facilitate the actual visibility of the triangle