VULCAD

2D CAD for pattern making written in c++ with vulkan

Features

• supported shapes
  • line
  • point
  • circle and any polygons
  • bezier curve
  • spline and any polylines
• cross-platform viwer powered by Vulkan API
• save drawings as dxf files (Drawing Exchange Format. the most common file format for CAD applications)
• matrix and vector calculations
• simple and fast cmake commands

Usage

sample code for drawing line

// create a line
Line l({0, 0}, {2, 3});
// draw the line
Drawing drawing;
drawing.draw(line);
// display the drawing on the screen
drawing.show();

build and run the program

$ make run

another example to draw other shapes

Bezier quodraticBezier({
    {0, 0}, // origin
    {.2, .3}, // control
    {.5, -.8}  // end
});
Bezier cubicBezier({
    {0, 0}, // origin
    {.1, -.2}, // control 1
    {.3, .5}, // control 2
    {.5, .1}  // end
});

Drawing drawing;
drawing.draw(quodraticBezier);
drawing.draw(cubicBezier, {0, 0, 255}); // second parameter is the RGB color

Circle circle(
    {}, // origin ({} is equal to {0, 0})
    .5, // radius
);

drawing.draw(circle, {0, 50, 0}); // green circle
drawing.draw(circle, {0, 10, 50}, 5); // 3rd parameter is precision. this means draw the circle with 5 lines, thus the result is the pentagon.
drawing.draw(circle, {0, 10, 50}, 3); // triangle
drawing.draw(circle, {0, 10, 50}, 4); // square
drawing.draw(circle, {0, 10, 50}, 18); // polygon with 18 vertices and edges

Spline spline({
    {}, // origin (again, {} is short hand for {0, 0})
    {.1, .2}, // 2nd point
    {.2, .12}, // 3rd
    {.3, .-1}, // 4th
    {.4, .02}, // 5th
    {.5, -.8} //end (there is no limit to number of points)
});
drawing.draw(spline); // just draw the spline

drawing.draw(spline, {100, 100, 0}); // yellow

drawing.draw(spline, {100, 100, 0}, 3);
// 3rd parameter is the precision. spline is set of 5 cubic curves that join the the above 6 points smoothly. if precision is 3, then each cubic curve is approimated by 3 lines, thus outcome looks like a line chart.

drawing.draw(spline, {100, 100, 0}, 1);
// if the precision is 1, then the each curve is now approximated a single straint line, that is a polyline.

drawing.draw(cubicBezier, {0, 255, 0}, 2); // bezier  also accepts precision

// remember to call show function to actually render the screen
drawing.show();

// save drawing as dxf files in dxf directory
Dxf::write("your-drawing", spline);

Progress and Goals

in order of priority

• render vertices
• change units in centimeter
• draw lines
• draw circles
• export as dxf (samples)
• draw spline
• draw bezier curves
• [] create base pattern
• [] create black shirts
• [] create gray jeans
• [] create black round tyrolean
• [] zoom
• [] pan
• [] documentation

Disclaimer

• No user interface
• need to install vulkan and related libraries to use this program. look at makefile