Thanks anyway David. This is new territory for me too! I can handle resizing the image to powers of 2 to prevent throwing the exception and getting them in a scale suitable for the scene, but trying to build shapes that mimic being the canvas / picture dimensions is tricky. I think i'll have to go the getWidth(), getHeight() methods of Texture2D route, and use these to create the box x.y dimensions on-the-fly.
Thanks again Sam -----Original Message----- From: Discussion list for Java 3D API [mailto:[EMAIL PROTECTED]]On Behalf Of David Rush Sent: 14 April 2002 17:14 To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] texture mapping? Sam, No you are right the filters do not alter the shape in any way. They work by either using point sampling of neighbouring texels and using that colour, or by interpolating among neighbouring texels, depending on which mode you choose. Hmmm I'm not too sure how to go about that really I'm not an expert myself. But I still thnk that your biggest problem will come with the dimensions of the images. If they are not of the correct dimensions, an error will result. This means images must be cropped/resized to be a power of 2 in width/height prior to creating the texture. This is an even bigger problem if you don't know the sizes of the images in advance, and especially if resizing is a problem. Sorry I can't be of more help, David -----Original Message----- From: Discussion list for Java 3D API [mailto:[EMAIL PROTECTED]]On Behalf Of Sam Hocking Sent: 14 April 2002 17:03 To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] texture mapping? Hi David, Will setMag/MinFilter resize the *shape* to fit the image dimension that will map onto it though? From what i can gather it doesn't. An easier way for me to explain it might be to assume i have one image which is a portrait and one a landscape, i want the shape each will be mapped onto, to be portrait or landscape in the same dimensions. However the dimensions of each image are not known because they get dynamically loaded from a database. Essentially, artists are submitting digital artwork that then gets mapped to a virtual piece of canvas (a simple flat box shape!) hanging in a room. however i don't know the size of this image and i cant resize each image because it is art, not just a texture that doesn't matter so much! Thanks for the response Regards Sam -----Original Message----- From: Discussion list for Java 3D API [mailto:[EMAIL PROTECTED]]On Behalf Of David Rush Sent: 14 April 2002 16:27 To: [EMAIL PROTECTED] Subject: Re: [JAVA3D] texture mapping? Hello Sam, You probably know already but remember your images must be a power of 2 in width and height otherwise you'll get an exception. How the texture maps to the shape is determined by the texture coordinates of the shape. The image will distort to meet the texture coordinates, so the size of the shape shouldn't matter. Java 3D provides minification/magnification filters to eliminate these effects. Use the setMagFilter(int magFilter) and setMinFilter(int minFilter) methods of Texture2D to set them respectively. Regards, David Rush -----Original Message----- From: Discussion list for Java 3D API [mailto:[EMAIL PROTECTED]]On Behalf Of Sam Hocking Sent: 13 April 2002 19:17 To: [EMAIL PROTECTED] Subject: [JAVA3D] texture mapping? Hi, I'm pretty new to Java3D side of Java (few months) but thanks for your help recently. I'm having trouble using TextureLoader to load digital artwork in jpg format to then map to various box shapes (i.e. picture frames) in the scene. However, i need these box shapes to be created with the same x, y dimensions as the image texture that will map onto them. i.e the image can not be distorted to fit the shape, but the shape has to distort to fit the image? Is there a way i can do this, reasonably simply? I've looked at getWidth(), getHeight() methods of Texture2D, which i could use to then build the box's geometry, but just wondered if you experienced people here know of a better solution or maybe there's a class that does this already? Also, is there any ratio i can use between Java3D's units of measurement and pixel measurements of an image?? I.e. i don't really want minification of the image because i've created it larger than it has to be for the transformations it goes through. Thanks in advance Sam =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
