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import { DrawCore, Tag } from "@bitbybit-dev/core";
import * as Inputs from "../inputs/inputs";
import { Base } from "@bitbybit-dev/core/lib/api/inputs/base-inputs";
import { Context } from "../context";
import { DrawHelper } from "../draw-helper";
import { GEOMETRY_DEFAULTS, DEFAULT_COLORS } from "../constants";
// Type alias for entity with bitbybitMeta property
type BitByBitEntity = Inputs.Draw.BitByBitEntity;
// Interface for texture UV transformation data stored on textures
interface TextureTransformData {
uScale: number;
vScale: number;
uOffset: number;
vOffset: number;
wAng: number;
invertZ: boolean;
}
// Type for textures with optional BitByBit transform metadata
type TextureWithTransform = pc.Texture & { _bitbybitTransform?: TextureTransformData };
export class Draw extends DrawCore {
private defaultBasicOptions = new Inputs.Draw.DrawBasicGeometryOptions();
private defaultPolylineOptions: Inputs.Draw.DrawBasicGeometryOptions = {
...new Inputs.Draw.DrawBasicGeometryOptions(),
size: GEOMETRY_DEFAULTS.LINE_WIDTH,
colours: DEFAULT_COLORS.POLYLINE,
};
constructor(
public readonly drawHelper: DrawHelper,
public readonly context: Context,
public readonly tag: Tag
) {
super();
}
async drawAnyAsync(inputs: Inputs.Draw.DrawAny<pc.Entity>): Promise<BitByBitEntity> {
if (!this.isValidDrawInput(inputs.entity)) {
return Promise.resolve(undefined);
}
const entity = inputs.entity;
// we start with async ones
if (this.detectJscadMesh(entity)) {
return this.handleJscadMesh(inputs);
} else if (this.detectOcctShape(entity)) {
return this.handleOcctShape(inputs);
} else if (this.detectOcctShapes(entity)) {
return this.handleOcctShapes(inputs);
} else if (this.detectJscadMeshes(entity)) {
return this.handleJscadMeshes(inputs);
} else if (this.detectManifoldShape(entity)) {
return this.handleManifoldShape(inputs);
} else if (this.detectManifoldShapes(entity)) {
return this.handleManifoldShapes(inputs);
} else {
// here we have all sync drawer functions
return Promise.resolve(this.drawAny(inputs));
}
}
/**
* Draws any kind of geometry that does not need asynchronous computing, thus it cant be used with shapes coming from occt or jscad
* @param inputs Contains options and entities to be drawn
* @returns PlayCanvas Entity
* @group draw sync
* @shortname draw sync
*/
drawAny(inputs: Inputs.Draw.DrawAny<pc.Entity>): BitByBitEntity {
Iif (!this.isValidDrawInput(inputs.entity)) {
return undefined;
}
let result;
const entity = inputs.entity;
if (!inputs.group && !(inputs.entity instanceof pc.Entity)) {
if (this.detectLine(entity)) {
result = this.handleLine(inputs);
} else if (this.detectPoint(entity)) {
result = this.handlePoint(inputs);
} else if (this.detectPolyline(entity)) {
result = this.handlePolyline(inputs);
} else if (this.detectVerbCurve(entity)) {
result = this.handleVerbCurve(inputs);
} else if (this.detectVerbSurface(entity)) {
result = this.handleVerbSurface(inputs);
} else if (this.detectPolylines(entity)) {
result = this.handlePolylines(inputs);
} else if (this.detectLines(entity)) {
result = this.handleLines(inputs);
} else if (this.detectPoints(entity)) {
result = this.handlePoints(inputs);
} else if (this.detectVerbCurves(entity)) {
result = this.handleVerbCurves(inputs);
} else if (this.detectVerbSurfaces(entity)) {
result = this.handleVerbSurfaces(inputs);
} else if (this.detectTag(entity)) {
result = this.handleTag(inputs);
} else if (this.detectTags(entity)) {
result = this.handleTags(inputs);
}
} else {
// here types are marked on group metadata so it is not necessary to check their type
result = this.updateAny(inputs);
}
return result;
}
/**
* Creates draw options for basic geometry types like points, lines, polylines, surfaces and jscad meshes
* @param inputs option definition
* @returns options
* @group options
* @shortname simple
*/
optionsSimple(inputs: Inputs.Draw.DrawBasicGeometryOptions): Inputs.Draw.DrawBasicGeometryOptions {
return inputs;
}
/**
* Creates draw options for occt shape geometry like edges, wires, faces, shells, solids and compounds
* @param inputs option definition
* @returns options
* @group options
* @shortname occt shape
*/
optionsOcctShape(inputs: Inputs.Draw.DrawOcctShapeOptions): Inputs.Draw.DrawOcctShapeOptions {
return inputs;
}
/**
* Creates a generic texture that can be used with PBR materials.
* This method provides a cross-engine compatible way to create textures.
* Note: In PlayCanvas, UV transformations (scale, offset, rotation) are stored as metadata
* on the texture and applied when the texture is assigned to a material via createPBRMaterial.
* @param inputs Texture configuration options
* @returns PlayCanvas Texture with attached transformation metadata
* @group material
* @shortname create texture
* @disposableOutput true
*/
createTexture(inputs: Inputs.Draw.GenericTextureDto): pc.Texture {
const app = this.context.app;
// Create a new texture
const texture = new pc.Texture(app.graphicsDevice, {
name: inputs.name,
addressU: pc.ADDRESS_REPEAT,
addressV: pc.ADDRESS_REPEAT,
// PlayCanvas flipY is applied during upload - default is true for WebGL convention
// We invert since our API's invertY=false means "don't flip" (standard image orientation)
flipY: !inputs.invertY,
});
// Store UV transformation data as metadata on the texture
// PlayCanvas handles UV transforms at the material level, so we attach this data
// to be applied when the texture is used in createPBRMaterial
(texture as pc.Texture & { _bitbybitTransform?: TextureTransformData })._bitbybitTransform = {
uScale: inputs.uScale,
vScale: inputs.vScale,
uOffset: inputs.uOffset,
vOffset: inputs.vOffset,
wAng: inputs.wAng,
invertZ: inputs.invertZ,
};
// Load the image asynchronously
const image = new Image();
image.crossOrigin = "anonymous";
image.onload = () => {
texture.setSource(image);
// Apply sampling mode after source is set
switch (inputs.samplingMode) {
case Inputs.Draw.samplingModeEnum.nearest:
texture.minFilter = pc.FILTER_NEAREST;
texture.magFilter = pc.FILTER_NEAREST;
break;
case Inputs.Draw.samplingModeEnum.bilinear:
texture.minFilter = pc.FILTER_LINEAR;
texture.magFilter = pc.FILTER_LINEAR;
break;
case Inputs.Draw.samplingModeEnum.trilinear:
texture.minFilter = pc.FILTER_LINEAR_MIPMAP_LINEAR;
texture.magFilter = pc.FILTER_LINEAR;
break;
}
};
image.src = inputs.url;
return texture;
}
/**
* Creates a generic PBR (Physically Based Rendering) material.
* This method provides a cross-engine compatible way to create materials
* that can be used with draw options for OCCT shapes and other geometry.
* UV transformations from textures created with createTexture are automatically applied.
* @param inputs Material configuration options
* @returns PlayCanvas StandardMaterial
* @group material
* @shortname create pbr material
* @disposableOutput true
*/
createPBRMaterial(inputs: Inputs.Draw.GenericPBRMaterialDto): pc.StandardMaterial {
const mat = new pc.StandardMaterial();
mat.name = inputs.name;
// Parse hex color to RGB
const baseColor = this.hexToRgb(inputs.baseColor);
mat.diffuse = new pc.Color(baseColor.r, baseColor.g, baseColor.b);
// PBR properties
mat.metalness = inputs.metallic;
mat.gloss = 1 - inputs.roughness; // PlayCanvas uses gloss (inverse of roughness)
mat.useMetalness = true;
mat.opacity = inputs.alpha;
// Emissive
Eif (inputs.emissiveColor) {
const emissive = this.hexToRgb(inputs.emissiveColor);
mat.emissive = new pc.Color(emissive.r, emissive.g, emissive.b);
mat.emissiveIntensity = inputs.emissiveIntensity;
}
// Back face culling
mat.cull = inputs.doubleSided ? pc.CULLFACE_NONE : pc.CULLFACE_BACK;
// Z offset (depth bias in PlayCanvas)
if (inputs.zOffset !== 0) {
mat.depthBias = inputs.zOffset;
mat.slopeDepthBias = inputs.zOffsetUnits;
}
// Textures with UV transform support
if (inputs.baseColorTexture) {
mat.diffuseMap = inputs.baseColorTexture as pc.Texture;
this.applyTextureTransform(mat, inputs.baseColorTexture as TextureWithTransform, "diffuseMap");
}
if (inputs.metallicRoughnessTexture) {
mat.metalnessMap = inputs.metallicRoughnessTexture as pc.Texture;
mat.glossMap = inputs.metallicRoughnessTexture as pc.Texture;
this.applyTextureTransform(mat, inputs.metallicRoughnessTexture as TextureWithTransform, "metalnessMap");
// Note: glossMap shares the same texture, PlayCanvas will use the same UV transforms
}
if (inputs.normalTexture) {
mat.normalMap = inputs.normalTexture as pc.Texture;
this.applyTextureTransform(mat, inputs.normalTexture as TextureWithTransform, "normalMap");
}
if (inputs.emissiveTexture) {
mat.emissiveMap = inputs.emissiveTexture as pc.Texture;
this.applyTextureTransform(mat, inputs.emissiveTexture as TextureWithTransform, "emissiveMap");
}
if (inputs.occlusionTexture) {
mat.aoMap = inputs.occlusionTexture as pc.Texture;
this.applyTextureTransform(mat, inputs.occlusionTexture as TextureWithTransform, "aoMap");
}
// Alpha mode
switch (inputs.alphaMode) {
case Inputs.Draw.alphaModeEnum.opaque:
mat.blendType = pc.BLEND_NONE;
break;
case Inputs.Draw.alphaModeEnum.mask:
mat.blendType = pc.BLEND_NONE;
mat.alphaTest = inputs.alphaCutoff;
break;
case Inputs.Draw.alphaModeEnum.blend:
mat.blendType = pc.BLEND_NORMAL;
break;
}
mat.update();
return mat;
}
/**
* Applies UV transformation data from a texture to the corresponding material properties.
* PlayCanvas handles UV transforms at the material level per texture slot.
* @param mat - The material to apply transforms to
* @param texture - The texture with potential transform metadata
* @param mapType - The type of texture map (e.g., "diffuseMap", "normalMap")
*/
private applyTextureTransform(
mat: pc.StandardMaterial,
texture: TextureWithTransform,
mapType: "diffuseMap" | "normalMap" | "emissiveMap" | "metalnessMap" | "aoMap"
): void {
const transform = texture._bitbybitTransform;
Eif (!transform) {
return;
}
// Map texture slot names to their corresponding material property prefixes
// PlayCanvas uses properties like diffuseMapTiling, normalMapOffset, etc.
const propertyMap: Record<string, string> = {
"diffuseMap": "diffuseMap",
"normalMap": "normalMap",
"emissiveMap": "emissiveMap",
"metalnessMap": "metalnessMap",
"aoMap": "aoMap",
};
const prefix = propertyMap[mapType];
if (!prefix) {
return;
}
// Apply tiling (scale) - PlayCanvas uses Vec2 for tiling
// invertZ affects V scale (flips texture vertically in UV space)
const vScaleMultiplier = transform.invertZ ? -1 : 1;
(mat as unknown as Record<string, pc.Vec2>)[`${prefix}Tiling`] = new pc.Vec2(
transform.uScale,
transform.vScale * vScaleMultiplier
);
// Apply offset - PlayCanvas uses Vec2 for offset
(mat as unknown as Record<string, pc.Vec2>)[`${prefix}Offset`] = new pc.Vec2(
transform.uOffset,
transform.vOffset
);
// Apply rotation (wAng) - PlayCanvas supports texture rotation in radians
(mat as unknown as Record<string, number>)[`${prefix}Rotation`] = transform.wAng;
}
/**
* Helper method to convert hex color string to RGB values (0-1 range)
*/
private hexToRgb(hex: string): { r: number; g: number; b: number } {
const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
Eif (result) {
return {
r: parseInt(result[1], 16) / 255,
g: parseInt(result[2], 16) / 255,
b: parseInt(result[3], 16) / 255
};
}
return { r: 0, g: 0, b: 1 }; // Default blue
}
private handleJscadMesh(inputs: Inputs.Draw.DrawAny<pc.Entity>): Promise<pc.Entity> {
return this.handleAsync(inputs, this.defaultPolylineOptions, (options) => {
return this.drawHelper.drawSolidOrPolygonMesh({
jscadMesh: inputs.group,
mesh: inputs.entity,
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.jscadMesh);
}
private handleJscadMeshes(inputs: Inputs.Draw.DrawAny<pc.Entity>): Promise<pc.Entity> {
return this.handleAsync(inputs, this.defaultPolylineOptions, (options) => {
return this.drawHelper.drawSolidOrPolygonMeshes({
jscadMesh: inputs.group,
meshes: inputs.entity as Inputs.JSCAD.JSCADEntity[],
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.jscadMeshes);
}
private handleManifoldShape(inputs: Inputs.Draw.DrawAny<pc.Entity>): Promise<pc.Entity> {
return this.handleAsync(inputs, new Inputs.Manifold.DrawManifoldOrCrossSectionDto(inputs.entity), (options) => {
return this.drawHelper.drawManifoldOrCrossSection({
manifoldOrCrossSection: inputs.entity as Inputs.Manifold.ManifoldPointer | Inputs.Manifold.CrossSectionPointer,
...new Inputs.Draw.DrawManifoldOrCrossSectionOptions(),
...options as Inputs.Draw.DrawManifoldOrCrossSectionOptions
});
}, Inputs.Draw.drawingTypes.occt);
}
private handleManifoldShapes(inputs: Inputs.Draw.DrawAny<pc.Entity>): Promise<pc.Entity> {
return this.handleAsync(inputs, new Inputs.Manifold.DrawManifoldOrCrossSectionDto(inputs.entity), (options) => {
return this.drawHelper.drawManifoldsOrCrossSections({
manifoldsOrCrossSections: inputs.entity as (Inputs.Manifold.ManifoldPointer | Inputs.Manifold.CrossSectionPointer)[],
...new Inputs.Draw.DrawManifoldOrCrossSectionOptions(),
...options as Inputs.Draw.DrawManifoldOrCrossSectionOptions
});
}, Inputs.Draw.drawingTypes.occt);
}
private handleOcctShape(inputs: Inputs.Draw.DrawAny<pc.Entity>): Promise<pc.Entity> {
return this.handleAsync(inputs, new Inputs.Draw.DrawOcctShapeOptions(), (options) => {
return this.drawHelper.drawShape({
shape: inputs.entity as Inputs.OCCT.TopoDSShapePointer,
...new Inputs.Draw.DrawOcctShapeOptions(),
...options as Inputs.Draw.DrawOcctShapeOptions
});
}, Inputs.Draw.drawingTypes.occt);
}
private handleOcctShapes(inputs: Inputs.Draw.DrawAny<pc.Entity>): Promise<pc.Entity> {
return this.handleAsync(inputs, new Inputs.Draw.DrawOcctShapeOptions(), (options) => {
return this.drawHelper.drawShapes({
shapes: inputs.entity as Inputs.OCCT.TopoDSShapePointer[],
...new Inputs.Draw.DrawOcctShapeOptions(),
...options as Inputs.Draw.DrawOcctShapeOptions
});
}, Inputs.Draw.drawingTypes.occtShapes);
}
private handleLine(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
return this.handle(inputs, this.defaultPolylineOptions, (options) => {
const line = inputs.entity as Inputs.Base.Line3 | Inputs.Base.Segment3;
const pts: Inputs.Base.Point3[] = [];
if (line && line["start"]) {
pts.push((line as Inputs.Base.Line3).start, (line as Inputs.Base.Line3).end);
} else {
pts.push(...line as Inputs.Base.Segment3);
}
return this.drawHelper.drawPolylinesWithColours({
polylinesMesh: inputs.group,
polylines: [{ points: pts }],
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.line);
}
private handlePoint(inputs: Inputs.Draw.DrawAny<pc.Entity>) {
return this.handle(inputs, this.defaultBasicOptions, (options) => {
return this.drawHelper.drawPoint({
pointMesh: inputs.group,
point: inputs.entity as Inputs.Base.Point3,
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.point);
}
private handlePolyline(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
return this.handle(inputs, this.defaultPolylineOptions, (options) => {
return this.drawHelper.drawPolylineClose({
polylineMesh: inputs.group,
polyline: inputs.entity as Inputs.Base.Polyline3,
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.polyline);
}
private handleVerbCurve(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
return this.handle(inputs, this.defaultPolylineOptions, (options) => {
return this.drawHelper.drawCurve({
curveMesh: inputs.group,
curve: inputs.entity,
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.verbCurve);
}
private handleVerbSurface(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
return this.handle(inputs, this.defaultPolylineOptions, (options) => {
return this.drawHelper.drawSurface({
surfaceMesh: inputs.group,
surface: inputs.entity,
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.verbSurface);
}
private handlePolylines(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
return this.handle(inputs, this.defaultPolylineOptions, (options) => {
return this.drawHelper.drawPolylinesWithColours({
polylinesMesh: inputs.group,
polylines: inputs.entity as Inputs.Base.Polyline3[],
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.polylines);
}
private handleLines(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
return this.handle(inputs, this.defaultPolylineOptions, (options) => {
const lines = inputs.entity as Inputs.Base.Line3[] | Inputs.Base.Segment3[];
const pts: Inputs.Base.Point3[][] = [];
if (lines && lines[0] && lines[0]["start"]) {
lines.forEach(e => {
pts.push([e.start, e.end]);
});
} else {
lines.forEach(line => {
pts.push(line as Inputs.Base.Segment3);
});
}
return this.drawHelper.drawPolylinesWithColours({
polylinesMesh: inputs.group,
polylines: pts.map(e => ({ points: [...e] })),
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.lines);
}
private handlePoints(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
return this.handle(inputs, this.defaultPolylineOptions, (options) => {
return this.drawHelper.drawPoints({
pointsMesh: inputs.group,
points: inputs.entity as Inputs.Base.Point3[],
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.points);
}
private handleVerbCurves(inputs: Inputs.Draw.DrawAny<pc.Entity>) {
return this.handle(inputs, this.defaultPolylineOptions, (options) => {
return this.drawHelper.drawCurves({
curvesMesh: inputs.group,
curves: inputs.entity as Base.VerbCurve[],
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.verbCurves);
}
private handleVerbSurfaces(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
return this.handle(inputs, this.defaultBasicOptions, (options) => {
return this.drawHelper.drawSurfacesMultiColour({
surfacesMesh: inputs.group,
surfaces: inputs.entity as Base.VerbSurface[],
...options as Inputs.Draw.DrawBasicGeometryOptions
});
}, Inputs.Draw.drawingTypes.verbSurfaces);
}
private handleTag(inputs: Inputs.Draw.DrawAny<pc.Entity>): BitByBitEntity {
const options = this.resolveDrawOptions(inputs, { ...this.defaultBasicOptions, updatable: false });
// Validate entity is a TagDto
Iif (!this.isTagDto(inputs.entity)) {
throw new Error("Entity must be a TagDto for drawTag operation");
}
const result = this.tag.drawTag({
tagVariable: inputs.group && this.isTagDto(inputs.group) ? inputs.group as unknown as Inputs.Tag.TagDto : undefined,
tag: inputs.entity as unknown as Inputs.Tag.TagDto,
...options as Inputs.Draw.DrawBasicGeometryOptions
});
return this.attachMetadata(result, Inputs.Draw.drawingTypes.tag, options);
}
private handleTags(inputs: Inputs.Draw.DrawAny<pc.Entity>): BitByBitEntity {
const options = this.resolveDrawOptions(inputs, { ...this.defaultBasicOptions, updatable: false });
// Validate entity is a TagDto array
Iif (!this.isTagDtoArray(inputs.entity)) {
throw new Error("Entity must be a TagDto array for drawTags operation");
}
const result = this.tag.drawTags({
tagsVariable: inputs.group && this.isTagDtoArray(inputs.group) ? inputs.group as unknown as Inputs.Tag.TagDto[] : undefined,
tags: inputs.entity as unknown as Inputs.Tag.TagDto[],
...options as Inputs.Draw.DrawBasicGeometryOptions
});
return this.attachMetadata(result, Inputs.Draw.drawingTypes.tags, options);
}
private updateAny(inputs: Inputs.Draw.DrawAny<pc.Entity>): pc.Entity {
let result;
const group = inputs.group as BitByBitEntity;
Eif (group && group.bitbybitMeta) {
const type = group.bitbybitMeta.type as Inputs.Draw.drawingTypes;
switch (type) {
case Inputs.Draw.drawingTypes.point:
result = this.handlePoint(inputs);
break;
case Inputs.Draw.drawingTypes.points:
result = this.handlePoints(inputs);
break;
case Inputs.Draw.drawingTypes.line:
result = this.handleLine(inputs);
break;
case Inputs.Draw.drawingTypes.lines:
result = this.handleLines(inputs);
break;
case Inputs.Draw.drawingTypes.polyline:
result = this.handlePolyline(inputs);
break;
case Inputs.Draw.drawingTypes.polylines:
result = this.handlePolylines(inputs);
break;
case Inputs.Draw.drawingTypes.verbCurve:
result = this.handleVerbCurve(inputs);
break;
case Inputs.Draw.drawingTypes.verbCurves:
result = this.handleVerbCurves(inputs);
break;
case Inputs.Draw.drawingTypes.verbSurface:
result = this.handleVerbSurface(inputs);
break;
case Inputs.Draw.drawingTypes.verbSurfaces:
result = this.handleVerbSurfaces(inputs);
break;
case Inputs.Draw.drawingTypes.tag:
result = this.handleTag(inputs);
break;
case Inputs.Draw.drawingTypes.tags:
result = this.handleTags(inputs);
break;
default:
break;
}
}
return result;
}
/**
* Handle synchronous drawing operations with proper option resolution
* @param inputs - Draw inputs
* @param defaultOptions - Default options for this geometry type
* @param action - Function that performs the actual drawing
* @param type - Geometry type for metadata
* @returns Drawn entity
*/
private handle(
inputs: Inputs.Draw.DrawAny<pc.Entity>,
defaultOptions: Inputs.Draw.DrawOptions,
action: (options: Inputs.Draw.DrawOptions) => pc.Entity,
type: Inputs.Draw.drawingTypes
): pc.Entity {
try {
const options = this.resolveDrawOptions(inputs, defaultOptions);
const result = action(options);
Eif (result) {
this.applyGlobalSettingsAndMetadataAndShadowCasting(type, options, result);
}
return result;
} catch (error) {
const typeName = Inputs.Draw.drawingTypes[type];
console.error(`Error in sync draw operation for ${typeName}:`, error);
throw error; // Re-throw for sync operations
}
}
/**
* Handle async drawing operations with proper error handling
* @param inputs - Draw inputs
* @param defaultOptions - Default options for this geometry type
* @param action - Async function that performs the actual drawing
* @param type - Geometry type for metadata
* @returns Promise resolving to drawn entity
*/
private async handleAsync(
inputs: Inputs.Draw.DrawAny<pc.Entity>,
defaultOptions: Inputs.Draw.DrawOptions,
action: (options: Inputs.Draw.DrawOptions) => Promise<pc.Entity>,
type: Inputs.Draw.drawingTypes
): Promise<pc.Entity> {
try {
const options = this.resolveDrawOptions(inputs, defaultOptions);
const result = await action(options);
if (result) {
this.applyGlobalSettingsAndMetadataAndShadowCasting(type, options, result);
} else E{
console.warn(`Drawing operation returned null/undefined for type: ${Inputs.Draw.drawingTypes[type]}`);
}
return result;
} catch (error) {
const typeName = Inputs.Draw.drawingTypes[type];
console.error(`Error in async draw operation for ${typeName}:`, error);
// Include more context in error message
const errorMessage = error instanceof Error ? error.message : String(error);
throw new Error(`Failed to draw ${typeName}: ${errorMessage}`);
}
}
private applyGlobalSettingsAndMetadataAndShadowCasting(type: Inputs.Draw.drawingTypes, options: Inputs.Draw.DrawOptions, result: pc.Entity | undefined) {
Eif (result) {
const bitByBitResult = result as BitByBitEntity;
const typemeta: Inputs.Draw.BitByBitMeta = { type, options };
bitByBitResult.bitbybitMeta = bitByBitResult.bitbybitMeta ? { ...bitByBitResult.bitbybitMeta, ...typemeta } : typemeta;
}
}
/**
* Type guard to check if value is a PlayCanvas Entity
* @param value - Value to check
* @returns True if value is pc.Entity
*/
private isEntity(value: unknown): value is pc.Entity {
return value instanceof pc.Entity;
}
/**
* Extract options from inputs with proper fallback chain
* @param inputs - Draw inputs
* @param defaultOptions - Default options to use as fallback
* @returns Resolved options
*/
private resolveDrawOptions(
inputs: Inputs.Draw.DrawAny<pc.Entity>,
defaultOptions: Inputs.Draw.DrawOptions
): Inputs.Draw.DrawOptions {
// Priority 1: Explicit options provided
if (inputs.options) {
return inputs.options;
}
// Priority 2: Options from existing group metadata
const group = inputs.group as BitByBitEntity;
if (group?.bitbybitMeta?.options) {
return group.bitbybitMeta.options;
}
// Priority 3: Default options
return defaultOptions;
}
/**
* Attach BitByBit metadata to an entity
* @param entity - Entity to attach metadata to
* @param type - Drawing type
* @param options - Draw options
* @returns Entity with attached metadata
*/
private attachMetadata(
entity: pc.Entity | unknown,
type: Inputs.Draw.drawingTypes,
options: Inputs.Draw.DrawOptions
): BitByBitEntity {
Iif (!entity || !this.isEntity(entity)) {
throw new Error(`Invalid entity type for metadata attachment: ${typeof entity}`);
}
const bitByBitEntity = entity as BitByBitEntity;
bitByBitEntity.bitbybitMeta = { type, options };
return bitByBitEntity;
}
}
|