Documentation application 3D_from_2D

The application allows you to create 3D curves by selecting Points on pixel images. 3-D surfaces can be generated from the 3D curves with CAD standard-functions. There are 1 or 2 or 3 view images required. The view images (formats. .jpg or .bmp) should have a view from above and / or a side-view or front-view. Program call: Start the user application "3Dfrom2D" - Select from the list of additional applications or - If application was active before: start with Ctrl-P. Exit the application: Exit button or Ctrl + Esc. All data will be passed to the CAD model. ________________________________________________________________ Setup: Top-view / Side-view / Front-view Scale Offset Angle X-lines Y-lines Z-lines 2D to 3D: import CAD Point import CAD-plane Point Polygon Spline Circle not yet implemented Plane 3D Delete MirrXZ MirrYZ ________________________________________________________________ Setup: to prepare: - Images (jpg's) of one, two or three views. - Photos must be equalized Editing images with Gimp for example: - Equalizing with: Tools / Transform / Perspective - Cut with: Tools / Transform / Crop - 90-degree turns should be made with the image editing program Gimp: Image / Transform / Rotate 90 degrees - Very large photos (over 4000 pixels - depending on the graphics card) should be reduced with an image editing program. Top / Side / Front View Definition of images (selected from file list). Top view: contains horizontal X-axis, vertical y-axis. Side view: contains horizontal X-axis, vertical Z-axis. Located above the top view. Front view: Z-axis has horizontal, vertical Y-axis. If the right of the top view. ^ Z |-----+ | Side | X +-----+----> ^ Y ^ Y |-----+ |------+ | Top | X | front | Z +-----+----> +------+----> After the definition of the view images, the zero points of the three basic axes must be defined - - Click into view images, click again to indicate horizontal or vertical. The base levels will be shown as red lines. X-lines Generating one or two horizontal guides in Top view or side view. Esc = Delete last. Y-lines Generating one or two vertical guides in Top view or side view. Esc = Delete last. Z-lines Generating one or two guidelines in Side view or front view. Esc = Delete last. Scale Select the input corresponding to the view; change the values with the cursor keys up / down. Offset Select the input corresponding to the view; change the values with the cursorkeys left / right or up / down. Angle Select the input corresponding to the view window; change the values with the cursorkeys left / right. ________________________________________________________________

2D to 3D:

Create objects. Objects will be displayed in 2D-space; when the application exits all objects will be copied into 3D-space. import CAD Point Creates 2D-points of points or end points of curves. Use it to generate curves. Select a CAD-point or CAD-curve. import CAD-plane Generates 2D-planes of 3D-CAD-planes Use it to generate curves. Select a CAD plane. Plane First create all planes at which curves or common points are located. Planes are shown as red lines. Create a plane through the selection of 2 points in one view; The second point is used to define horizontal or vertical. Top view - horizontal: an X-Z plane. Top view - vertical: a Y-Z plane. Side view - horizontal: an X-Y plane. Side view - vertical: a Y-Z plane. Front view - horizontal: an X-Z plane. Front view - vertical: an X-Y plane. Esc clears last created level. Point If several curves have a common point, first this point should be created; afterwards use this point. Select the point in 2 different views. If the point is on a plane, select the plane for the second view (2D-plane or CAD-plane). Esc clears last point created. Polygon Spline Select all points of the curve in a view, then (In reverse order) in a different view. Esc clears the last selected point. If an item is out of a photo: indicate the position in the corresponding height inside the photo. If a point is on a plane, the plane should be selected. If the entire curve lies in a plane, select the plane for the second view (2D-plane or CAD-plane). Circle not yet implemented ________________________________________________________________

3D:

Preview of all up to now created objects in 3D-space. Delete Delete 2D objects. Select the object. MirrXZ Flip an object around the X-Z plane. Select the object. MirrYZ Flip an object around the Y-Z plane. Select the object. ________________________________________________________________ Send bug reports, suggestions for improvements to support@gcad3d.org ________________________________________________________________