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Hidden tissues in context.
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@jirkapok
jirkapok committed Jan 17, 2025
1 parent 8bf11e4 commit 0238b47
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Showing 5 changed files with 40 additions and 24 deletions.
15 changes: 12 additions & 3 deletions projects/scuba-physics/src/lib/AlgorithmContext.ts
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import { Tissues } from './Tissues';
import { LoadSegment, Tissues } from './Tissues';
import { Ceiling } from './CalculatedProfile';
import { BestGasOptions, Gas, Gases, OCGasSource } from './Gases';
import { GradientFactors, SubSurfaceGradientFactors } from './GradientFactors';
Expand All @@ -23,13 +23,13 @@ export interface ContextMemento {
}

export class AlgorithmContext {
public tissues: Tissues;
public ceilings: Ceiling[] = [];
public tissueOverPressures: TissueOverPressures[] = [];
public tissuesHistory: LoadedTissue[][] = [];
/** in seconds */
public runTime = 0;

private tissues: Tissues;
private _oxygenStarted = 0;
private _currentGas: Gas;
private gradients: GradientFactors;
Expand Down Expand Up @@ -95,6 +95,11 @@ export class AlgorithmContext {
return this.runTime - this._oxygenStarted;
}

public get finalTissues(): LoadedTissue[] {
//TODO replace with tissuesHistory.last
return this.tissues.finalState();
}

/**
* Current gas is oxygen - For Air breaks.
* Correct is to compare ppO2 is high (>= 1.6),
Expand Down Expand Up @@ -150,11 +155,15 @@ export class AlgorithmContext {
this.tissueOverPressures.push(currentOverPressures);
}

public loadTissues(segment: LoadSegment, gas: Gas): number {
return this.tissues.load(segment, gas);
}

public createMemento(): ContextMemento {
return {
runTime: this.runTime,
oxygenStarted: this._oxygenStarted,
tissues: this.tissues.finalState(),
tissues: this.finalTissues,
ceilings: this.ceilings.length,
tissueOverPressures: this.tissueOverPressures.length,
segments: this.segments.length,
Expand Down
9 changes: 4 additions & 5 deletions projects/scuba-physics/src/lib/BuhlmannAlgorithm.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -172,8 +172,7 @@ export class BuhlmannAlgorithm {
}

const merged = context.segments.mergeFlat(segments.length);
const finalTissues = context.tissues.finalState();
return CalculatedProfile.fromProfile(merged, context.ceilings, context.tissueOverPressures, finalTissues);
return CalculatedProfile.fromProfile(merged, context.ceilings, context.tissueOverPressures, context.finalTissues);
}

/**
Expand Down Expand Up @@ -217,7 +216,7 @@ export class BuhlmannAlgorithm {
this.swim(context, restingSegment);
// we don't have here the saturation from the dive, so we can return only the surface changes
return {
finalTissues: context.tissues.finalState(),
finalTissues: context.finalTissues,
tissueOverPressures: context.tissueOverPressures
};
}
Expand Down Expand Up @@ -360,7 +359,7 @@ export class BuhlmannAlgorithm {

private swimPart(context: AlgorithmContext, segment: Segment) {
const loadSegment = this.toLoadSegment(context.depthConverter, segment);
context.tissues.load(loadSegment, segment.gas);
context.loadTissues(loadSegment, segment.gas);
context.runTime += segment.duration;
// following methods slow down calculation 2x - consider speedup by extracting them
context.addCeiling();
Expand Down Expand Up @@ -394,7 +393,7 @@ export class BuhlmannAlgorithm {
let change = 1;

while (context.ceiling() <= 0 && change > 0) {
change = context.tissues.load(hoverLoad, last.gas);
change = context.loadTissues(hoverLoad, last.gas);
context.runTime += Time.oneMinute;
}

Expand Down
24 changes: 12 additions & 12 deletions projects/scuba-physics/src/lib/BuhlmannAlgortihm.repetitive.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -57,15 +57,15 @@ describe('Buhlmann Algorithm - Repetitive dives', () => {
describe('Surface interval', () => {
it('Isn\'t applied for 0 seconds surface interval duration', () => {
const diveResult = diveOnTrimix();
const restedTissues = applySurfaceInterval(diveResult.tissues, 0, 0);
const r1 = toTissueResult(diveResult.tissues);
const restedTissues = applySurfaceInterval(diveResult.lastTissues, 0, 0);
const r1 = toTissueResult(diveResult.lastTissues);
const r2 = toTissueResult(restedTissues);
expect(r1).toEqual(r2);
});

it('Reset tissues to stable for infinite surface interval', () => {
const diveResult = diveOnTrimix();
const restedTissues = applySurfaceInterval(diveResult.tissues, 0, Number.POSITIVE_INFINITY);
const restedTissues = applySurfaceInterval(diveResult.lastTissues, 0, Number.POSITIVE_INFINITY);
const r1 = toTissueResult(restedTissues);
const r2 = toTissueResult(stableTissues);
expect(r1).toEqual(r2);
Expand Down Expand Up @@ -99,8 +99,8 @@ describe('Buhlmann Algorithm - Repetitive dives', () => {

it('Adapts helium loading', () => {
const diveResult = diveOnTrimix();
const r1 = toTissueResult(diveResult.tissues);
const result2 = applySurfaceInterval(diveResult.tissues, 0, Time.oneMinute * 10);
const r1 = toTissueResult(diveResult.lastTissues);
const result2 = applySurfaceInterval(diveResult.lastTissues, 0, Time.oneMinute * 10);
const r2 = toTissueResult(result2);
expect(_(r1).every((item, index) =>
item.pHe > r2[index].pHe && item.pHe !== 0 && r2[index].pHe !== 0
Expand All @@ -109,7 +109,7 @@ describe('Buhlmann Algorithm - Repetitive dives', () => {

it('Tissue come back to original state after 1.5 days surface interval', () => {
const diveResult = diveOnTrimix();
const restedTissues = applySurfaceInterval(diveResult.tissues, 0, Time.oneHour * 36);
const restedTissues = applySurfaceInterval(diveResult.lastTissues, 0, Time.oneHour * 36);
const roundto = 2; // rounding to less than 1 % of error
const r1 = toTissueResult(restedTissues, roundto);
const r2 = toTissueResult(stableTissues, roundto);
Expand All @@ -129,11 +129,11 @@ describe('Buhlmann Algorithm - Repetitive dives', () => {
describe('Following dive', () => {
it('Deco calculation ends with different tissues loading', () => {
const firstDive = diveOnTrimix();
const restingParameters = new RestingParameters(firstDive.tissues, Time.oneMinute * 5);
const restingParameters = new RestingParameters(firstDive.lastTissues, Time.oneMinute * 5);
const secondDive = diveOnTrimix(restingParameters);

const firstTissues = toTissueResult(firstDive.tissues);
const secondTissues = toTissueResult(secondDive.tissues);
const firstTissues = toTissueResult(firstDive.lastTissues);
const secondTissues = toTissueResult(secondDive.lastTissues);

// there is difference in both he and N2, some tissues have higher loading, some lower.
expect(firstTissues).not.toEqual(secondTissues);
Expand All @@ -142,15 +142,15 @@ describe('Buhlmann Algorithm - Repetitive dives', () => {
it('Deco calculation generates reproducible results', () => {
const firstDive = diveOnTrimix();
const secondDive = diveOnTrimix();
const firstTissues = toTissueResult(firstDive.tissues);
const secondTissues = toTissueResult(secondDive.tissues);
const firstTissues = toTissueResult(firstDive.lastTissues);
const secondTissues = toTissueResult(secondDive.lastTissues);
expect(firstTissues).toEqual(secondTissues);
});

it('Nodeco limit are lower', () => {
const firstDive = diveOnTrimix();
const firstDiveNdl = noDecoLimits();
const restingParameters = new RestingParameters(firstDive.tissues, Time.oneMinute * 10);
const restingParameters = new RestingParameters(firstDive.lastTissues, Time.oneMinute * 10);
const secondDiveNdl = noDecoLimits(restingParameters);
expect(_(firstDiveNdl).every((item, index) => item > secondDiveNdl[index] ))
.toBeTruthy();
Expand Down
8 changes: 8 additions & 0 deletions projects/scuba-physics/src/lib/CalculatedProfile.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -196,6 +196,14 @@ export class CalculatedProfile {
return this.ceil;
}

public get lastTissues(): LoadedTissue[] {
if(this.tiss.length < 1) {
return [];
}
return this.tiss;
// return this.tiss[this.tiss.length - 1];
}

/**
* Not null tissues state at end of the dive or empty in case of error.
* Items are ordered as Compartments by their half time Buhlmann m-values table.
Expand Down
8 changes: 4 additions & 4 deletions projects/scuba-physics/src/lib/performanceTests.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -42,7 +42,7 @@ describe('Performance', () => {
expect(averageDuration).toBeLessThan(limit);
};

it('Decompression is calculated within 100 ms', () => {
it('Decompression is calculated within 150 ms', () => {
const options = OptionExtensions.createOptions(0.4, 0.85, 1.4, 1.6, Salinity.salt);
options.safetyStop = SafetyStop.always;
options.salinity = Salinity.salt;
Expand All @@ -64,7 +64,7 @@ describe('Performance', () => {
const algorithm = new BuhlmannAlgorithm();
const parameters = AlgorithmParams.forMultilevelDive(segments, gases, options);

assertDuration(`Decompression calculation duration`, 100,
assertDuration(`Decompression calculation duration`, 150,
() => algorithm.decompression(parameters));
});

Expand All @@ -78,7 +78,7 @@ describe('Performance', () => {
() => algorithm.noDecoLimit(simpleDive));
});

it('Consumption Max bottom time is calculated within 550 ms', () => {
it('Consumption Max bottom time is calculated within 1000 ms', () => {
const consumptionOptions: ConsumptionOptions = {
diver: new Diver(20),
primaryTankReserve: Consumption.defaultPrimaryReserve,
Expand All @@ -99,7 +99,7 @@ describe('Performance', () => {
segments.add(5, tank.gas, Time.oneMinute);
segments.addFlat(tank.gas, Time.oneMinute * 10);

assertDuration(`Consumption Max bottom time duration`, 550,
assertDuration(`Consumption Max bottom time duration`, 1000,
() => consumption.calculateMaxBottomTime(segments, tanks, consumptionOptions, options));
});
});

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