Design vector graphics with this tool. TdhCad help you create Vector Graphics with the utmost ease. Vector graphics represents the use of geometrical primitives like points, lines, curves, and shapes or polygon, that are all based on mathematical equations, in order to represent images in computer graphics.

TdhCad Features:
1. Click and drag to create entities of many shapes
2. Move, rotate and resize entities
3. Move points to reshape entities
4. Create groups containing entities and other groups
5. Create paths containing lines and curves
6. Copy and paste entire entities or points between entities
7. Change properties including color, width and dashes
8. Apply color gradients to entities and groups
9. Add a note to any entity
10. Use any number of layers
11. Merge drawings
12. Export drawings to SVG, PNG or PDF files
13. Save drawings within project databases
14. More, including Snap, Virtual Points, Arrows and FipY.

Zooming and Panning
Panning can be accomplished by:
1. A double click of the left mouse button, which places the click point in the middle of the window. This is useful for zooming in on a particular point.
2. Selecting Pan by Drag from the Zoom menu and dragging the mouse by the desired pan distance.

Zooming can be accomplished by:
1. Rotating the mouse wheel, forward to zoom in, backward to zoom out (this can be reversed with a Wheel Factor less than 1).
2. Selecting Extents from the Zoom menu, the entire drawing will be displayed
3. Selecting Window from the Zoom menu, use the mouse to drag a rectangle to be zoomed.

In addition, the Zoom menu provides the following options:
1. Previous, return to previous displays, up to 10 deep.
2. Redo, undo a Previous selection.
3. Wheel Factor, change the amount of zooming accomplished by a mouse wheel rotation.

Drawings
Drawings contain one or more layers.

Projects
A project specifies the use of a particular directory containing a Drawing database file.

Layers
Layers contain entities and allow the modification of some display parameters.

Entities
Entities are the elements of a drawing.

The license of this software is Freeware, you can free download and free use this graphing software.