110 lines
3.7 KiB
JavaScript
110 lines
3.7 KiB
JavaScript
import AUTO_CAD_COLOR_INDEX from './AutoCadColorIndex.js';
|
|
/**
|
|
* Returns the truecolor value of the given AutoCad color index value
|
|
* @return {Number} truecolor value as a number
|
|
*/
|
|
export function getAcadColor(index) {
|
|
return AUTO_CAD_COLOR_INDEX[index];
|
|
}
|
|
/**
|
|
* Parses the 2D or 3D coordinate, vector, or point. When complete,
|
|
* the scanner remains on the last group of the coordinate.
|
|
* @param {*} scanner
|
|
*/
|
|
export function parsePoint(scanner) {
|
|
const point = {};
|
|
// Reread group for the first coordinate
|
|
scanner.rewind();
|
|
let curr = scanner.next();
|
|
let code = curr.code;
|
|
point.x = curr.value;
|
|
code += 10;
|
|
curr = scanner.next();
|
|
if (curr.code != code)
|
|
throw new Error('Expected code for point value to be ' + code +
|
|
' but got ' + curr.code + '.');
|
|
point.y = curr.value;
|
|
code += 10;
|
|
curr = scanner.next();
|
|
if (curr.code != code) {
|
|
// Only the x and y are specified. Don't read z.
|
|
scanner.rewind(); // Let the calling code advance off the point
|
|
return point;
|
|
}
|
|
point.z = curr.value;
|
|
return point;
|
|
}
|
|
/**
|
|
* Attempts to parse codes common to all entities. Returns true if the group
|
|
* was handled by this function.
|
|
* @param {*} entity - the entity currently being parsed
|
|
* @param {*} curr - the current group being parsed
|
|
*/
|
|
export function checkCommonEntityProperties(entity, curr, scanner) {
|
|
switch (curr.code) {
|
|
case 0:
|
|
entity.type = curr.value;
|
|
break;
|
|
case 5:
|
|
entity.handle = curr.value;
|
|
break;
|
|
case 6:
|
|
entity.lineType = curr.value;
|
|
break;
|
|
case 8: // Layer name
|
|
entity.layer = curr.value;
|
|
break;
|
|
case 48:
|
|
entity.lineTypeScale = curr.value;
|
|
break;
|
|
case 60:
|
|
entity.visible = curr.value === 0;
|
|
break;
|
|
case 62: // Acad Index Color. 0 inherits ByBlock. 256 inherits ByLayer. Default is bylayer
|
|
entity.colorIndex = curr.value;
|
|
entity.color = getAcadColor(Math.abs(curr.value));
|
|
break;
|
|
case 67:
|
|
entity.inPaperSpace = curr.value !== 0;
|
|
break;
|
|
case 100:
|
|
//ignore
|
|
break;
|
|
case 101: // Embedded Object in ACAD 2018.
|
|
// See https://ezdxf.readthedocs.io/en/master/dxfinternals/dxftags.html#embedded-objects
|
|
while (curr.code != 0) {
|
|
curr = scanner.next();
|
|
}
|
|
scanner.rewind();
|
|
break;
|
|
case 330:
|
|
entity.ownerHandle = curr.value;
|
|
break;
|
|
case 347:
|
|
entity.materialObjectHandle = curr.value;
|
|
break;
|
|
case 370:
|
|
//From https://www.woutware.com/Forum/Topic/955/lineweight?returnUrl=%2FForum%2FUserPosts%3FuserId%3D478262319
|
|
// An integer representing 100th of mm, must be one of the following values:
|
|
// 0, 5, 9, 13, 15, 18, 20, 25, 30, 35, 40, 50, 53, 60, 70, 80, 90, 100, 106, 120, 140, 158, 200, 211.
|
|
// -3 = STANDARD, -2 = BYLAYER, -1 = BYBLOCK
|
|
entity.lineweight = curr.value;
|
|
break;
|
|
case 420: // TrueColor Color
|
|
entity.color = curr.value;
|
|
break;
|
|
case 1000:
|
|
entity.extendedData = entity.extendedData || {};
|
|
entity.extendedData.customStrings = entity.extendedData.customStrings || [];
|
|
entity.extendedData.customStrings.push(curr.value);
|
|
break;
|
|
case 1001:
|
|
entity.extendedData = entity.extendedData || {};
|
|
entity.extendedData.applicationName = curr.value;
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|