started fleshing out RailButton class
This commit is contained in:
Daniel_M_Williams
parent
d43381d70c
commit
f1b89d2bb3
@ -7,76 +7,144 @@ import net.sf.openrocket.l10n.Translator;
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import net.sf.openrocket.preset.ComponentPreset;
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import net.sf.openrocket.preset.ComponentPreset.Type;
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import net.sf.openrocket.startup.Application;
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import net.sf.openrocket.util.BugException;
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import net.sf.openrocket.util.Coordinate;
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import net.sf.openrocket.util.MathUtil;
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/**
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* WARNING! This class is stubbed out, partially implemented, but DEFINITELY not ready for use.
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* WARNING: This class is only partially implemented. Recomend a bit of testing before you attach it to the GUI.
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* @author widget (Daniel Williams)
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*
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*/
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public abstract class RailButton extends ExternalComponent implements LineInstanceable {
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public class RailButton extends ExternalComponent implements LineInstanceable {
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private static final Translator trans = Application.getTranslator();
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private double radius;
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private double thickness;
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// NOTE: Rail Button ARE NOT STANDARD -- They vary by manufacturer, and model.
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// These presets have appropriate dimensions for each rail size, given the Rail Buttons contribute so little to flying properties.
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public static final RailButton ROUND_1010 = make1010Button();
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public static final RailButton ROUND_1515 = make1515Button();
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/*
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* Rail Button Dimensions (side view)
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*
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*
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* <= outer dia =>
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* v
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* ^ [[[[[[]]]]]] lipThickness
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* height >||||||<= inner dia ^
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* v |||||| v
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* [[[[[[]]]]]] standoff
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* ================ ^
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* (body)
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*
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*/
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protected double outerDiameter;
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protected double height;
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protected double innerDiameter;
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protected double thickness;
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// Standoff is defined as the distance from the body surface to this components reference point
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// Note: the reference point for Rail Button Components is in the center bottom of the button.
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protected double standoff;
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protected final static double MINIMUM_STANDOFF= 0.001;
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private double radialDirection = 0;
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private int instanceCount = 1;
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private double instanceSeparation = 0; // front-front along the positive rocket axis. i.e. [1,0,0];
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/* These are calculated when the component is first attached to any Rocket */
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private double shiftY, shiftZ;
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public RailButton() {
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super(Position.MIDDLE);
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radius = 0.01 / 2;
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thickness = 0.001;
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length = 0.03;
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public RailButton( final double id, final double od, final double ht ) {
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this( od, id, ht, ht/4, ht/4);
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}
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// @Override
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// public double getOuterRadius() {
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// return radius;
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// }
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//
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// @Override
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// public void setOuterRadius(double radius) {
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// if (MathUtil.equals(this.radius, radius))
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public RailButton( final double od, final double id, final double h, final double _thickness, final double _standoff ) {
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super(Position.MIDDLE);
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this.innerDiameter = id;
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this.outerDiameter = od;
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this.height = h-_standoff;
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this.thickness = _thickness;
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this.setStandoff( _standoff);
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this.instanceSeparation = od*2;
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}
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private static final RailButton make1010Button(){
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final double id = 0.008; // guess
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final double od = 0.0097;
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final double ht = 0.0097;
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final double thickness = 0.002; // guess
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final double standoff = 0.002; // guess
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RailButton rb1010 = new RailButton( od, id, ht, thickness, standoff);
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rb1010.setMassOverridden(true);
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rb1010.setOverrideMass(0.0019);
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return rb1010;
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}
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private static final RailButton make1515Button(){
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final double id = 0.012; // guess
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final double od = 0.016;
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final double ht = 0.0173;
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final double thickness = 0.0032; // guess
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final double standoff = 0.0032; // guess
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RailButton rb1010 = new RailButton( od, id, ht, thickness, standoff);
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rb1010.setMassOverridden(true);
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rb1010.setOverrideMass(0.0077);
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return rb1010;
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}
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public double getStandoff(){
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return this.standoff;
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}
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public double getOuterRadius() {
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return this.outerDiameter;
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}
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public double getInnerDiameter() {
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return this.innerDiameter;
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}
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public double getTotalHeight() {
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return this.height+this.standoff;
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}
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public double getThickness() {
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return this.thickness;
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}
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public void setStandoff( final double newStandoff){
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this.standoff = Math.max( newStandoff, RailButton.MINIMUM_STANDOFF );
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}
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public void setInnerDiameter( final double newID ){
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this.innerDiameter = newID;
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}
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public void setOuterDiameter( final double newOD ){
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this.outerDiameter = newOD;
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}
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public void setTotalHeight( final double newHeight ) {
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this.height = newHeight-this.standoff;
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}
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public void setThickness( final double newThickness ) {
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this.thickness = newThickness;
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}
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// public void setThickness(double thickness) {
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// if (MathUtil.equals(this.thickness, thickness))
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// return;
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// this.radius = radius;
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// this.thickness = Math.min(this.thickness, this.radius);
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// this.thickness = MathUtil.clamp(thickness, 0, radius);
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// clearPreset();
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// fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
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// }
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// @Override
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// public double getInnerRadius() {
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// return radius - thickness;
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// }
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//
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// @Override
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// public void setInnerRadius(double innerRadius) {
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// setOuterRadius(innerRadius + thickness);
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// }
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//
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// @Override
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// public double getThickness() {
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// return thickness;
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// }
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public void setThickness(double thickness) {
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if (MathUtil.equals(this.thickness, thickness))
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return;
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this.thickness = MathUtil.clamp(thickness, 0, radius);
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clearPreset();
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fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
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}
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public double getRadialDirection() {
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return radialDirection;
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@ -91,33 +159,18 @@ public abstract class RailButton extends ExternalComponent implements LineInstan
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}
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public void setLength(double length) {
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if (MathUtil.equals(this.length, length))
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return;
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this.length = length;
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fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
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}
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@Override
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public boolean isAfter() {
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return false;
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}
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@Override
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public void setRelativePosition(RocketComponent.Position position) {
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super.setRelativePosition(position);
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fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
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}
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@Override
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public void setPositionValue(double value) {
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super.setPositionValue(value);
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fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
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}
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//
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// @Override
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// public void setPositionValue(double value) {
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// super.setPositionValue(value);
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// fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
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// }
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@Override
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public Coordinate[] getInstanceOffsets(){
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@ -131,22 +184,22 @@ public abstract class RailButton extends ExternalComponent implements LineInstan
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return toReturn;
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}
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@Override
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protected void loadFromPreset(ComponentPreset preset) {
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if (preset.has(ComponentPreset.OUTER_DIAMETER)) {
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double outerDiameter = preset.get(ComponentPreset.OUTER_DIAMETER);
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this.radius = outerDiameter / 2.0;
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if (preset.has(ComponentPreset.INNER_DIAMETER)) {
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double innerDiameter = preset.get(ComponentPreset.INNER_DIAMETER);
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this.thickness = (outerDiameter - innerDiameter) / 2.0;
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}
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}
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super.loadFromPreset(preset);
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fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
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}
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// @Override
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// protected void loadFromPreset(ComponentPreset preset) {
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// if (preset.has(ComponentPreset.OUTER_DIAMETER)) {
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// double outerDiameter = preset.get(ComponentPreset.OUTER_DIAMETER);
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// this.radius = outerDiameter / 2.0;
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// if (preset.has(ComponentPreset.INNER_DIAMETER)) {
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// double innerDiameter = preset.get(ComponentPreset.INNER_DIAMETER);
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// this.thickness = (outerDiameter - innerDiameter) / 2.0;
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// }
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// }
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//
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// super.loadFromPreset(preset);
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//
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// fireComponentChangeEvent(ComponentChangeEvent.BOTH_CHANGE);
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// }
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//
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@Override
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public Type getPresetType() {
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@ -170,55 +223,99 @@ public abstract class RailButton extends ExternalComponent implements LineInstan
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public void componentChanged(ComponentChangeEvent e) {
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super.componentChanged(e);
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/*
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* shiftY and shiftZ must be computed here since calculating them
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* in shiftCoordinates() would cause an infinite loop due to .toRelative
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*/
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RocketComponent body;
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double parentRadius;
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for (body = this.getParent(); body != null; body = body.getParent()) {
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if (body instanceof SymmetricComponent)
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break;
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}
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if (body == null) {
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parentRadius = 0;
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} else {
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SymmetricComponent s = (SymmetricComponent) body;
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double x1, x2;
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x1 = this.toRelative(Coordinate.NUL, body)[0].x;
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x2 = this.toRelative(new Coordinate(length, 0, 0), body)[0].x;
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x1 = MathUtil.clamp(x1, 0, body.getLength());
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x2 = MathUtil.clamp(x2, 0, body.getLength());
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parentRadius = Math.max(s.getRadius(x1), s.getRadius(x2));
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}
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shiftY = Math.cos(radialDirection) * (parentRadius + radius);
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shiftZ = Math.sin(radialDirection) * (parentRadius + radius);
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// /*
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// * shiftY and shiftZ must be computed here since calculating them
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// * in shiftCoordinates() would cause an infinite loop due to .toRelative
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// */
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// RocketComponent body;
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// double parentRadius;
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//
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// for (body = this.getParent(); body != null; body = body.getParent()) {
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// if (body instanceof SymmetricComponent)
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// break;
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// }
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//
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// if (body == null) {
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// parentRadius = 0;
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// } else {
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// SymmetricComponent s = (SymmetricComponent) body;
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// double x1, x2;
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// x1 = this.toRelative(Coordinate.NUL, body)[0].x;
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// x2 = this.toRelative(new Coordinate(length, 0, 0), body)[0].x;
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// x1 = MathUtil.clamp(x1, 0, body.getLength());
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// x2 = MathUtil.clamp(x2, 0, body.getLength());
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// parentRadius = Math.max(s.getRadius(x1), s.getRadius(x2));
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// }
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//
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// shiftY = Math.cos(radialDirection) * (parentRadius + radius);
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// shiftZ = Math.sin(radialDirection) * (parentRadius + radius);
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//
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// System.out.println("Computed shift: y="+shiftY+" z="+shiftZ);
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}
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@Override
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public double getComponentVolume() {
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return length * Math.PI * (MathUtil.pow2(radius) - MathUtil.pow2(radius - thickness));
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final double volOuter = Math.PI*Math.pow( outerDiameter/2, 2)*thickness;
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final double volInner = Math.PI*Math.pow( innerDiameter/2, 2)*(height - thickness - standoff);
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final double volStandoff = Math.PI*Math.pow( outerDiameter/2, 2)*standoff;
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return (volOuter+
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volInner+
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volStandoff);
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}
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@Override
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public double getInstanceSeparation(){
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return this.instanceSeparation;
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}
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@Override
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public void setInstanceSeparation(final double _separation){
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this.instanceSeparation = _separation;
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}
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@Override
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public void setInstanceCount( final int newCount ){
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if( 0 < newCount ){
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this.instanceCount = newCount;
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}
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}
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@Override
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public int getInstanceCount(){
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return this.instanceCount;
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}
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@Override
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public String getPatternName(){
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return (this.getInstanceCount() + "-Line");
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}
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@Override
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public Collection<Coordinate> getComponentBounds() {
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ArrayList<Coordinate> set = new ArrayList<Coordinate>();
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addBound(set, 0, radius);
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addBound(set, length, radius);
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return set;
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}
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@Override
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public Coordinate getComponentCG() {
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return new Coordinate(length / 2, 0, 0, getComponentMass());
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// Math.PI and density are assumed constant through calcualtion, and thus may be factored out.
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final double volumeInner = Math.pow( innerDiameter/2, 2)*(height - thickness - standoff);
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final double volumeOuter = Math.pow( outerDiameter/2, 2)*thickness;
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final double volumeStandoff = Math.pow( outerDiameter/2, 2)*standoff;
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final double totalVolume = volumeInner + volumeOuter + volumeStandoff;
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final double heightCM = (volumeInner*( this.height - this.thickness/2) + volumeOuter*( this.height-this.thickness)/2 - volumeStandoff*(this.standoff/2))/totalVolume;
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if( heightCM > this.height ){
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throw new BugException(" bug found while computing the CG of a RailButton: "+this.getName()+"\n height of CG: "+heightCM);
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}
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final double CMy = Math.cos(this.radialDirection)*heightCM;
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final double CMz = Math.sin(this.radialDirection)*heightCM;
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return new Coordinate( 0, CMy, CMz, getComponentMass());
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}
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@Override
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@ -252,33 +349,4 @@ public abstract class RailButton extends ExternalComponent implements LineInstan
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return false;
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}
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@Override
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public double getInstanceSeparation(){
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return this.instanceSeparation;
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}
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@Override
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public void setInstanceSeparation(final double _separation){
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this.instanceSeparation = _separation;
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}
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@Override
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public void setInstanceCount( final int newCount ){
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if( 0 < newCount ){
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this.instanceCount = newCount;
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}
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}
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@Override
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public int getInstanceCount(){
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return this.instanceCount;
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}
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@Override
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public String getPatternName(){
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return (this.getInstanceCount() + "-Line");
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}
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}
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