www.algodoo.com

xplane80 wrote:You can get the density of the object from e.geom/e.other .density
The Mass, I am not as sure. If you know the area of the object, then just multiply the area with the density and then you get the mass.

Rideg wrote:SizeX * SizeY = area. Though you can't access the sizes via e.other/geom.size

KarateBrot wrote:I don't know how they do it in algodoo. For geometries with an infinite amount of surfaces you have to integrate many parts and then add / substract them from each other so that in the end you get the overall area. With polygons like in algodoo with a finite amount I think you can use the trapezium algorithm. Because there can be so much surfaces it's only possible with a computer. To calculate it yourself would take forever

Code: Select all

Scene.my.For100In = (a, r, c)=>{
Scene.my.For10In(a,((r + 10) > (c + 10) ? {c + 10} : {c}),(c - (c % 10)));
((c + 10) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 10 + 10) ? {c + 20} : {c + 10}),(c + 10 - (c % 10)))} : {};
((c + 20) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 20 + 10) ? {c + 30} : {c + 20}),(c + 20 - (c % 10)))} : {};
((c + 30) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 30 + 10) ? {c + 40} : {c + 30}),(c + 30 - (c % 10)))} : {};
((c + 40) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 40 + 10) ? {c + 50} : {c + 40}),(c + 40 - (c % 10)))} : {};
((c + 50) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 50 + 10) ? {c + 60} : {c + 50}),(c + 50 - (c % 10)))} : {};
((c + 60) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 60 + 10) ? {c + 70} : {c + 60}),(c + 60 - (c % 10)))} : {};
((c + 70) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 70 + 10) ? {c + 80} : {c + 70}),(c + 70 - (c % 10)))} : {};
((c + 80) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 80 + 10) ? {c + 90} : {c + 80}),(c + 80 - (c % 10)))} : {};
((c + 90) < (r + 10)) ? {Scene.my.For10In(a,((r + 10) > (c + 90 + 10) ? {c + 100} : {c + 90}),(c + 90 - (c % 10)))} : {};
((c + 90) < (r + 10)) ? {Scene.my.For100In(a,r,(c + 100))} : {}};

Scene.my.For10In = (a, r, c)=>{
((c < r)) ? {a(c);} : {};
((c + 1) < r) ? {a(c + 1);} : {};
((c + 2) < r) ? {a(c + 2);} : {};
((c + 3) < r) ? {a(c + 3);} : {};
((c + 4) < r) ? {a(c + 4);} : {};
((c + 5) < r) ? {a(c + 5);} : {};
((c + 6) < r) ? {a(c + 6);} : {};
((c + 7) < r) ? {a(c + 7);} : {};
((c + 8) < r) ? {a(c + 8);} : {};
((c + 9) < r) ? {a(c + 9);} : {};
((c + 9) < r) ? {Scene.my.For10In (a,r,(c + 10))} : {}};

Scene.my.Pro02CheckSize = (name)=>{TEMParray := name ++ ["THISISTHEENDOFTHEARRAYHERE"];Found := false;Size := 0;Scene.my.For100In((x)=>{found ? {} : {(((TEMParray(x)) + "") == "THISISTHEENDOFTHEARRAYHERE" ? {Found = true} : {};Size = x}},(100),0);(Size - 1)};

Scene.my.Area = (aoxy)=>{Scene.my.AreaIn(aoxy,0,0.0,Scene.my.Pro02CheckSize(aoxy))};
Scene.my.AreaIn = (aoxy,c,a,s)=>{c <= s ? {Scene.my.AreaIn(aoxy,(c + 1),(a + (aoxy(c)(0) * ((aoxy((c + 1) % (s + 1))(1)) - (aoxy(((c - 1) < 0 ? (s) : (c-1)))(1))))),s)} : {a/2.0}};


Code: Select all

(e)=>{
    scene.addcircle({
        radius := 0.06;
        density := 12;
        pos := e.pos;
        color := [1.0, 0.9763333, 0.29000002, 1.0];
        drawcake := false;
        attraction := -10000;
        collideset := 64;
        onhitbylaser := ((e)=>{attraction = 0})
    });
    scene.addpen({
        size := 0.11;
        color := [0.8580386, 0.8580386, 0.8580386, 0.175];
        fadetime := 1.0
    });
    scene.addpen({
        size := 0.1;
        color := [1.0, 0.8333333, 0.0, 0.735];
        fadetime := 0.4
    });
    scene.addpen({
        size := 0.09;
        color := [0.8580386, 0.8580386, 0.8580386, 0.37];
        fadetime := 0.6
    });
    scene.addpen({
        size := 0.08;
        color := [0.8580386, 0.14300644, 0.0, 0.682];
        fadetime := 0.1
    })
}

Code: Select all

(e)=>{
    scene.addcircle({
        radius := 0.06;
        density := 12;
        pos := e.pos;
        color := [1.0, 0.9763333, 0.29000002, 1.0];
        drawcake := false;
        attraction := -10000;
        collideset := 64;
        GeomID := 1;
        onhitbylaser := ((e)=>{attraction = 0})
    });
    scene.addpen({Geom := 1;relPoint := [0.0, 0.0];
        size := 0.11;
        color := [0.8580386, 0.8580386, 0.8580386, 0.175];
        fadetime := 1.0
    });
    scene.addpen({Geom := 1;relPoint := [0.0, 0.0];
        size := 0.1;
        color := [1.0, 0.8333333, 0.0, 0.735];
        fadetime := 0.4
    });
    scene.addpen({Geom := 1;relPoint := [0.0, 0.0];
        size := 0.09;
        color := [0.8580386, 0.8580386, 0.8580386, 0.37];
        fadetime := 0.6
    });
    scene.addpen({Geom := 1;relPoint := [0.0, 0.0];
        size := 0.08;
        color := [0.8580386, 0.14300644, 0.0, 0.682];
        fadetime := 0.1
    })
}

Chronos wrote:stop being lazy