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[change] src/runtime-three/runtime-project-time.ts
This commit is contained in:
Victor Giers
2026-04-22 17:22:31 +02:00
parent 7b9847d98e
commit e1c807b958
1 changed files with 8 additions and 23 deletions
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31
src/runtime-three/runtime-project-time.ts
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@@ -21,6 +21,11 @@ const DEFAULT_NOON_DIRECTION: Vec3 = {
y: 0.88, y: 0.88,
z: 0.15 z: 0.15
}; };
const UP_AXIS: Vec3 = {
x: 0,
y: 1,
z: 0
};
export interface RuntimeClockState { export interface RuntimeClockState {
timeOfDayHours: number; timeOfDayHours: number;
dayCount: number; dayCount: number;
@@ -80,10 +85,6 @@ function smoothstep(edge0: number, edge1: number, value: number): number {
return t * t * (3 - 2 * t); return t * t * (3 - 2 * t);
} }
function lerp(left: number, right: number, amount: number): number {
return left + (right - left) * amount;
}
function normalizeVec3(vector: Vec3): Vec3 { function normalizeVec3(vector: Vec3): Vec3 {
const length = Math.hypot(vector.x, vector.y, vector.z); const length = Math.hypot(vector.x, vector.y, vector.z);
@@ -128,18 +129,6 @@ function addVec3(left: Vec3, right: Vec3): Vec3 {
}; };
} }
function rotateAroundAxis(vector: Vec3, axis: Vec3, radians: number): Vec3 {
const cosine = Math.cos(radians);
const sine = Math.sin(radians);
return normalizeVec3(
addVec3(
addVec3(scaleVec3(vector, cosine), scaleVec3(cross(axis, vector), sine)),
scaleVec3(axis, dot(axis, vector) * (1 - cosine))
)
);
}
function parseHexColor(colorHex: string): { r: number; g: number; b: number } { function parseHexColor(colorHex: string): { r: number; g: number; b: number } {
return { return {
r: Number.parseInt(colorHex.slice(1, 3), 16), r: Number.parseInt(colorHex.slice(1, 3), 16),
@@ -512,12 +501,8 @@ function resolveTimeDrivenCelestialOrbitAxialOffset(
visibleDurationHours: number visibleDurationHours: number
): number { ): number {
const visibleFraction = clamp(visibleDurationHours / HOURS_PER_DAY, 0, 1); const visibleFraction = clamp(visibleDurationHours / HOURS_PER_DAY, 0, 1);
const axisHeight = Math.max(Math.abs(dot(orbitAxis, basePeakDirection)), 1e-6); const axisHeight = Math.max(Math.abs(dot(orbitAxis, UP_AXIS)), 1e-6);
const peakHeight = clamp(dot(basePeakDirection, { const peakHeight = clamp(dot(basePeakDirection, UP_AXIS), -1, 1);
x: 0,
y: 1,
z: 0
}), -1, 1);
const offsetRatio = const offsetRatio =
(-Math.cos(visibleFraction * Math.PI) * peakHeight) / axisHeight; (-Math.cos(visibleFraction * Math.PI) * peakHeight) / axisHeight;
@@ -548,7 +533,7 @@ function resolveTimeDrivenCelestialDirection(
peakDirection, peakDirection,
visibleDurationHours visibleDurationHours
); );
const radialScale = Math.sqrt(Math.max(1 - axialOffset * axialOffset, 1e-6)); const radialScale = Math.sqrt(Math.max(1 - axialOffset * axialOffset, 0));
const peakTimeOfDayHours = normalizeTimeOfDayHours( const peakTimeOfDayHours = normalizeTimeOfDayHours(
visibleStartTimeOfDayHours + visibleDurationHours / 2 visibleStartTimeOfDayHours + visibleDurationHours / 2
); );