how to make a wide path to be showed using Network node OnDraw Trigger?

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question

Raviraj V asked Mar 17, '22 Ryan Clark commented Mar 23, '22

how to make a wide path to be showed using Network node OnDraw Trigger?

Software Version:

FlexSim 19.2.4

network nodes triggers ondraw

· 3

Joerg Vogel commented · Mar 17, 2022 at 02:53 PM

@Raviraj V, you want to visualize a street?

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Raviraj V Joerg Vogel commented · Mar 17, 2022 at 03:02 PM

Create a wide using OnDraw in network nodes

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wide-path.png (84.8 KiB)

Ryan Clark commented · Mar 23, 2022 at 03:57 PM

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Answer 1 · 2022-03-17T23:52:22Z

Jason Lightfoot answered Mar 17, '22 Jason Lightfoot edited Mar 18, '22

Some trig will be involved for this and the commands you will need are drawtomodelscale() and either drawrect, drawrectangle or drawquad(). (fglRotate() might also help)

You'll also want the other node coordinates relative to the current node for a given port :

Vec3 otherloc = current.outObjects[port].location.project(current.outObjects[port].up,current);

and then the angle from one node to another will be

Math.degrees(Math.atan2(otherloc.y,otherloc.x))

If you were using an up to date version the vector logic is much simpler:

double pathwidth=2;
drawtomodelscale(current);
for (int n=current.outObjects.length;n>0;n--) {
Vec3 otherloc = current.outObjects[n].location.project(current.outObjects[n].up,current);
Vec2 other2=Vec2(otherloc.x,otherloc.y);
Vec2 unit=other2/other2.magnitude*pathwidth/2;
Vec2 leftoff=unit.rotate(90);
Vec2 p1=leftoff;
Vec2 p2=-leftoff;
Vec2 p3=p2+other2;
Vec2 p4=p3+leftoff*2;
drawquad(view,p1.x,p1.y,0,p2.x,p2.y,0,p3.x,p3.y,0,p4.x,p4.y,0,0,1,0);
}

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