<HTML> <HEAD> <META HTTP-EQUIV="CONTENT-TYPE" CONTENT="text/html; charset=windows-1250"> <TITLE>Search_en.htm</TITLE> <style>body{font: 10pt Verdana,sans-serif;}</style> </HEAD> <BODY LANG="en-US"> <PRE> <h2>Documentation application 3D_from_2D</h2> 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. <b>Program call:</b> Start the user application "3Dfrom2D" - Select from the list of additional applications or - If application was active before: start with Ctrl-P. <b>Exit the application:</b> 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 ________________________________________________________________ <b>Setup:</b> 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. <b>Top / Side / Front View</b> 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. <b>X-lines</b> Generating one or two horizontal guides in Top view or side view. Esc = Delete last. <b>Y-lines</b> Generating one or two vertical guides in Top view or side view. Esc = Delete last. <b>Z-lines</b> Generating one or two guidelines in Side view or front view. Esc = Delete last. <b>Scale</b> Select the input corresponding to the view; change the values with the cursor keys up / down. <b>Offset</b> Select the input corresponding to the view; change the values with the cursorkeys left / right or up / down. <b>Angle</b> Select the input corresponding to the view window; change the values with the cursorkeys left / right. ________________________________________________________________ <h2>2D to 3D:</h2> Create objects. Objects will be displayed in 2D-space; when the application exits all objects will be copied into 3D-space. <b>import CAD Point</b> Creates 2D-points of points or end points of curves. Use it to generate curves. Select a CAD-point or CAD-curve. <b>import CAD-plane</b> Generates 2D-planes of 3D-CAD-planes Use it to generate curves. Select a CAD plane. <b>Plane</b> 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. <b>Point</b> 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. <b>Polygon</b> <b>Spline</b> 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). <b>Circle</b> not yet implemented ________________________________________________________________ <h2>3D:</h2> Preview of all up to now created objects in 3D-space. <b>Delete</b> Delete 2D objects. Select the object. <b>MirrXZ</b> Flip an object around the X-Z plane. Select the object. <b>MirrYZ</b> Flip an object around the Y-Z plane. Select the object. ________________________________________________________________ Send bug reports, suggestions for improvements to support@gcad3d.org ________________________________________________________________ </PRE> </HTML>