Task 771: .VC6 File Format
Task 771: .VC6 File Format
The .VC6 file format is primarily associated with Ashlar-Vellum Graphite, a computer-aided drafting (CAD) software for 2D and 3D designs, where it serves as the native document format. It may also refer to disc image files in Virtual CD version 6 or project files in Virtual CRASH 6 software for accident reconstruction. In all cases, the format is proprietary, and no public specifications, such as detailed binary structure, headers, fields, or data encoding, are available based on extensive searches of web sources, documentation, and vulnerability reports. Without access to the proprietary specifications, it is not possible to provide accurate decoding, reading, or writing functionality in code.
Given the absence of low-level format specifications, the following list of properties is derived from high-level descriptions in Ashlar-Vellum Graphite user documentation. These represent the conceptual elements stored within a .VC6 file, rather than binary-level attributes intrinsic to a file system (e.g., file size or timestamps, which are managed by the operating system rather than the format itself):
- Multiple sheets, each representing an infinite 2D planar area for projections.
- Models, including 3D geometry, dimensions, text, fills, and hatching, positioned in three-dimensional space.
- Views, generated by cameras linked to models, including sheet views and detail views.
- Layers for organizing elements.
- Parametric dimensions and symbols.
- Preferences and settings, such as pen styles, though these may be stored in separate files like prefs.vc6.
No direct download links for .VC6 files were identified in searches across web sources, including Ashlar-Vellum's site and related documentation. Sample files are referenced in user guides (e.g., "A Portrait 1 View.vc6") but are not publicly available for download. As proprietary formats, .VC6 files are typically generated and shared within the respective software ecosystems, and no verifiable public repositories or direct links were found.
Due to the proprietary nature of the .VC6 format and lack of public specifications, it is not feasible to create functional HTML/JavaScript code for parsing and displaying its properties. Any implementation would be speculative and could mislead or produce incorrect results. For illustrative purposes, the following is a basic HTML/JavaScript template for drag-and-drop file handling, but it does not decode .VC6 files and simply reads the file as binary data without extraction:
- Due to the proprietary nature of the .VC6 format and lack of public specifications, it is not feasible to create a functional Python class for opening, decoding, reading, writing, or printing its properties. Any implementation would be speculative. For illustrative purposes, the following is a basic Python class template that opens the file as binary but does not perform actual decoding:
class VC6FileHandler:
def __init__(self, filepath):
self.filepath = filepath
self.data = None
def open_and_read(self):
with open(self.filepath, 'rb') as f:
self.data = f.read()
print(f"File opened: {self.filepath}")
print(f"File size: {len(self.data)} bytes")
def decode_and_print_properties(self):
if self.data is None:
print("File not opened.")
return
# Placeholder: No real decoding possible without spec.
print("Properties not extractable without format specification.")
# Example high-level properties from documentation (static).
properties = [
"Multiple sheets",
"Models (3D geometry, dimensions, text, fills, hatching)",
"Views (from cameras)",
"Layers",
"Parametrics",
"Symbols"
]
for prop in properties:
print(prop)
def write(self, output_path):
if self.data is None:
print("No data to write.")
return
with open(output_path, 'wb') as f:
f.write(self.data)
print(f"File written to: {output_path}")
# Usage example:
# handler = VC6FileHandler('example.vc6')
# handler.open_and_read()
# handler.decode_and_print_properties()
# handler.write('output.vc6')
- Due to the proprietary nature of the .VC6 format and lack of public specifications, it is not feasible to create a functional Java class for opening, decoding, reading, writing, or printing its properties. Any implementation would be speculative. For illustrative purposes, the following is a basic Java class template that opens the file as binary but does not perform actual decoding:
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class VC6FileHandler {
private String filepath;
private byte[] data;
public VC6FileHandler(String filepath) {
this.filepath = filepath;
}
public void openAndRead() throws IOException {
try (FileInputStream fis = new FileInputStream(filepath)) {
data = fis.readAllBytes();
}
System.out.println("File opened: " + filepath);
System.out.println("File size: " + data.length + " bytes");
}
public void decodeAndPrintProperties() {
if (data == null) {
System.out.println("File not opened.");
return;
}
// Placeholder: No real decoding possible without spec.
System.out.println("Properties not extractable without format specification.");
// Example high-level properties from documentation (static).
String[] properties = {
"Multiple sheets",
"Models (3D geometry, dimensions, text, fills, hatching)",
"Views (from cameras)",
"Layers",
"Parametrics",
"Symbols"
};
for (String prop : properties) {
System.out.println(prop);
}
}
public void write(String outputPath) throws IOException {
if (data == null) {
System.out.println("No data to write.");
return;
}
try (FileOutputStream fos = new FileOutputStream(outputPath)) {
fos.write(data);
}
System.out.println("File written to: " + outputPath);
}
// Usage example:
// public static void main(String[] args) throws IOException {
// VC6FileHandler handler = new VC6FileHandler("example.vc6");
// handler.openAndRead();
// handler.decodeAndPrintProperties();
// handler.write("output.vc6");
// }
}
- Due to the proprietary nature of the .VC6 format and lack of public specifications, it is not feasible to create a functional JavaScript class for opening, decoding, reading, writing, or printing its properties. Any implementation would be speculative. For illustrative purposes, the following is a basic JavaScript class template that reads the file as binary (using Node.js fs module) but does not perform actual decoding:
const fs = require('fs');
class VC6FileHandler {
constructor(filepath) {
this.filepath = filepath;
this.data = null;
}
openAndRead() {
this.data = fs.readFileSync(this.filepath);
console.log(`File opened: ${this.filepath}`);
console.log(`File size: ${this.data.length} bytes`);
}
decodeAndPrintProperties() {
if (!this.data) {
console.log('File not opened.');
return;
}
// Placeholder: No real decoding possible without spec.
console.log('Properties not extractable without format specification.');
// Example high-level properties from documentation (static).
const properties = [
'Multiple sheets',
'Models (3D geometry, dimensions, text, fills, hatching)',
'Views (from cameras)',
'Layers',
'Parametrics',
'Symbols'
];
properties.forEach(prop => console.log(prop));
}
write(outputPath) {
if (!this.data) {
console.log('No data to write.');
return;
}
fs.writeFileSync(outputPath, this.data);
console.log(`File written to: ${outputPath}`);
}
}
// Usage example:
// const handler = new VC6FileHandler('example.vc6');
// handler.openAndRead();
// handler.decodeAndPrintProperties();
// handler.write('output.vc6');
- Due to the proprietary nature of the .VC6 format and lack of public specifications, it is not feasible to create a functional C class (or struct-based implementation) for opening, decoding, reading, writing, or printing its properties. Any implementation would be speculative. For illustrative purposes, the following is a basic C program template that opens the file as binary but does not perform actual decoding:
#include <stdio.h>
#include <stdlib.h>
typedef struct {
char* filepath;
unsigned char* data;
size_t size;
} VC6FileHandler;
VC6FileHandler* createVC6Handler(const char* filepath) {
VC6FileHandler* handler = malloc(sizeof(VC6FileHandler));
handler->filepath = strdup(filepath);
handler->data = NULL;
handler->size = 0;
return handler;
}
void openAndRead(VC6FileHandler* handler) {
FILE* file = fopen(handler->filepath, "rb");
if (!file) {
printf("Error opening file: %s\n", handler->filepath);
return;
}
fseek(file, 0, SEEK_END);
handler->size = ftell(file);
fseek(file, 0, SEEK_SET);
handler->data = malloc(handler->size);
fread(handler->data, 1, handler->size, file);
fclose(file);
printf("File opened: %s\n", handler->filepath);
printf("File size: %zu bytes\n", handler->size);
}
void decodeAndPrintProperties(VC6FileHandler* handler) {
if (!handler->data) {
printf("File not opened.\n");
return;
}
// Placeholder: No real decoding possible without spec.
printf("Properties not extractable without format specification.\n");
// Example high-level properties from documentation (static).
const char* properties[] = {
"Multiple sheets",
"Models (3D geometry, dimensions, text, fills, hatching)",
"Views (from cameras)",
"Layers",
"Parametrics",
"Symbols"
};
for (int i = 0; i < sizeof(properties)/sizeof(properties[0]); i++) {
printf("%s\n", properties[i]);
}
}
void write(VC6FileHandler* handler, const char* outputPath) {
if (!handler->data) {
printf("No data to write.\n");
return;
}
FILE* file = fopen(outputPath, "wb");
if (!file) {
printf("Error writing to file: %s\n", outputPath);
return;
}
fwrite(handler->data, 1, handler->size, file);
fclose(file);
printf("File written to: %s\n", outputPath);
}
void destroyVC6Handler(VC6FileHandler* handler) {
free(handler->data);
free(handler->filepath);
free(handler);
}
// Usage example:
// int main() {
// VC6FileHandler* handler = createVC6Handler("example.vc6");
// openAndRead(handler);
// decodeAndPrintProperties(handler);
// write(handler, "output.vc6");
// destroyVC6Handler(handler);
// return 0;
// }