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/*
<?xml version='1.0' standalone='yes' ?>
<script>
<name>Gear</name>
<author>Metalab</author>
<version>0.1</version>
<date>20081008</date>
<description>This script creates a simple gear.</description>
</script>
*/
scene = window.getScene();
invertGearCheckbox = new BCheckBox( "", false );
toothSizeField = new ValueField(1, ValueField.NONNEGATIVE);
numTeethField = new ValueField(8, ValueField.NONNEGATIVE);
dlg = new ComponentsDialog(window, "Gear" ,
new Widget [] { toothSizeField, numTeethField, invertGearCheckbox },
new String [] { "Tooth size:", "# teeth:", "inverted gear" });
if (!dlg.clickedOk()) return;
toothSize = toothSizeField.getValue();
numTeeth = (int)Math.round(numTeethField.getValue());
boolean invertedGear = invertGearCheckbox.getState();
float innerradius = numTeeth * toothSize / 2;
float pitchradius = innerradius + toothSize * 1.25;
float outerradius = innerradius + toothSize * 2.25;
float toothangle = 2*Math.PI/numTeeth;
int PROTOSIZE = 7;
Vec3[] protoTooth = new Vec3[PROTOSIZE];
/* // standard teeth (but in practice they are too small
protoTooth[0] = new Vec3(-Math.PI/2, (double)innerradius, 0.0);
protoTooth[1] = new Vec3(-Math.PI/4 -1.25*Math.tan(Math.PI*20/180), innerradius, 0.0);
protoTooth[2] = new Vec3(-Math.PI/4, pitchradius, 0.0);
protoTooth[3] = new Vec3(-Math.PI/4 + Math.tan(Math.PI*20/180), outerradius, 0.0);
protoTooth[4] = new Vec3(Math.PI/4 - Math.tan(Math.PI*20/180), outerradius, 0.0);
protoTooth[5] = new Vec3(Math.PI/4, pitchradius, 0.0);
protoTooth[6] = new Vec3(Math.PI/4 + 1.25*Math.tan(Math.PI*20/180), innerradius, 0.0);
*/
if (invertedGear) {
outerradius = (float)(numTeeth * toothSize / 2);
pitchradius = (float)(innerradius + toothSize * 1.25);
innerradius = (float)(innerradius + toothSize * 2.25);
protoTooth[0] = new Vec3(-Math.PI/2, innerradius, 0.0);
protoTooth[1] = new Vec3(-Math.PI/4 - 0.2, innerradius, 0.0);
protoTooth[2] = new Vec3(-Math.PI/4 + 0.3, pitchradius, 0.0);
protoTooth[3] = new Vec3(-Math.PI/4 + 0.6, outerradius, 0.0);
protoTooth[4] = new Vec3(Math.PI/4 - 0.6, outerradius, 0.0);
protoTooth[5] = new Vec3(Math.PI/4 - 0.3, pitchradius, 0.0);
protoTooth[6] = new Vec3(Math.PI/4 + 0.2, innerradius, 0.0);
}
else
{
protoTooth[0] = new Vec3(-Math.PI/2, innerradius, 0.0);
protoTooth[1] = new Vec3(-Math.PI/4 - 0.2, innerradius, 0.0);
protoTooth[2] = new Vec3(-Math.PI/4 + 0.3, pitchradius, 0.0);
protoTooth[3] = new Vec3(-Math.PI/4 + 0.6, outerradius, 0.0);
protoTooth[4] = new Vec3(Math.PI/4 - 0.6, outerradius, 0.0);
protoTooth[5] = new Vec3(Math.PI/4 - 0.3, pitchradius, 0.0);
protoTooth[6] = new Vec3(Math.PI/4 + 0.2, innerradius, 0.0);
}
Vec3[] polaroutline = new Vec3[numTeeth * PROTOSIZE];
float startangle = 0;
for (int i=0;i<numTeeth;i++) {
for (int j=0;j<PROTOSIZE;j++) {
polaroutline[PROTOSIZE*i+j] = new Vec3((i + protoTooth[j].x/Math.PI) * toothangle,
protoTooth[j].y,
0);
}
}
Vec3[] cartesianoutline = new Vec3[numTeeth * PROTOSIZE];
float[] smoothness = new float[numTeeth * PROTOSIZE];
for (int i=0;i<numTeeth*PROTOSIZE;i++) {
cartesianoutline[i] = new Vec3(polaroutline[i].y * Math.cos(polaroutline[i].x),
polaroutline[i].y * Math.sin(polaroutline[i].x),
0.0);
smoothness[i] = 0;
}
curve = new Curve(cartesianoutline, smoothness, Mesh.INTERPOLATING, true);
window.addObject(curve, new CoordinateSystem(), "Gear", null);
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