Java-Gaming.org Hi !
 Featured games (84) games approved by the League of Dukes Games in Showcase (575) Games in Android Showcase (154) games submitted by our members Games in WIP (623) games currently in development
 News: Read the Java Gaming Resources, or peek at the official Java tutorials
 Home Help Search Login Register
Pages: [1]
 ignore  |  Print
 Retrieving actual vertex coordinates of live and transformed shape3d  (Read 1299 times) 0 Members and 1 Guest are viewing this topic.
darkflounder

Junior Newbie

 « Posted 2005-08-27 03:35:21 »

4 vertice shape3d object (2D rectangle) is created around the origin (0,0,0). Through the use of the program, the rectangle is translated and rotated. I need to be able to retrieve the current coordinates of a specified vertex at any time.

I can retrieve the vertex coordinates and the vector of the movement of the object. I can get a Matrix3d object of the rotation of the object, but I do not know how to apply that to get the current coordinate of the vertex.

Here's what I've got so far...
 1  2  3  4  5  6  7  8  9  10 `        Point3f p = new Point3f();        Shape3D s = * retrieved shape *;        GeometryArray geom = (GeometryArray) s.getGeometry();        geom.getCoordinate( corner, p );                Transform3D tmp= new Transform3D();        s.getLocalToVworld(tmp);        Vector3d trans = new Vector3d();        Matrix3d rot = new Matrix3d();        tmp.get(rot, trans);`

trans gives me the vector
(-9.0, -1.8125, -14.0)

rot gives me the matrix
-1.0, 0.0, 1.2246467991473532E-16
0.0, 1.0, 0.0
-1.2246467991473532E-16, 0.0, -1.0

Any help will be much appreciated.
Jeff

JGO Coder

Got any cats?

 « Reply #1 - Posted 2005-08-27 08:18:01 »

if foo is a Shape3D then

foo.getLocalToVWorld()

will return the total current transformation of the SHape32D in world space.

Retieve your vertex from the shape3d's geometry, transform it with the transform above, and voilla./

Got a question about Java and game programming?  Just new to the Java Game Development Community?  Try my FAQ.  Its likely you'll learn something!

http://wiki.java.net/bin/view/Games/JeffFAQ
Pages: [1]
 ignore  |  Print

You cannot reply to this message, because it is very, very old.

 BurntPizza (27 views) 2015-04-23 03:42:11 theagentd (31 views) 2015-04-22 16:23:07 Riven (45 views) 2015-04-16 10:48:47 Duke0200 (52 views) 2015-04-16 01:59:01 Fairy Tailz (39 views) 2015-04-14 20:13:12 Riven (41 views) 2015-04-12 21:36:37 bus hotdog (58 views) 2015-04-10 02:39:32 CopyableCougar4 (61 views) 2015-04-10 00:51:04 BurntPizza (62 views) 2015-04-06 22:06:58 ags1 (62 views) 2015-04-02 10:58:48
 theagentd 23x BurntPizza 16x wessles 15x kingroka123 11x alwex 11x 65K 11x kevglass 8x phu004 8x Rayvolution 8x Roquen 7x chrislo27 7x Hanksha 7x Riven 7x Olo 7x ra4king 7x Ecumene 7x
 How to: JGO Wikiby Mac702015-02-17 20:56:162D Dynamic Lighting2015-01-01 20:25:42How do I start Java Game Development?by gouessej2014-12-27 19:41:21Resources for WIP gamesby kpars2014-12-18 10:26:14Understanding relations between setOrigin, setScale and setPosition in libGdx2014-10-09 22:35:00Definite guide to supporting multiple device resolutions on Android (2014)2014-10-02 22:36:02List of Learning Resources2014-08-16 10:40:00List of Learning Resources2014-08-05 19:33:27
 java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org