I'm trying to access the teapot functionality as this is part of my class assignment.
I have tries making calls to the LoadAll(), but still cannot find how to render a teapot.
Posted Wednesday, 21 July, 2010 - 12:11 by reibisch
By teapot, I assume you're referring to glutSolidTeapot()?
Unfortunately, glutSolidTeapot() is part of GLUT -- which OpenTK doesn't wrap. Therefore, that functionality isn't available.
You could duplicate the functionality by downloading the model and writing a file loader for it. This may seem daunting, but if it's for a class then this is probably a great way to learn.
Posted Wednesday, 21 July, 2010 - 13:07 by reibisch
Tutorial 14 on this page has the triangle data encoded into a .c file. You should be able to extract the vertex/connectivity data from that easily enough.
Posted Wednesday, 21 July, 2010 - 17:28 by erkisnotgod
Well that didn't work very well.
I get one of two things:
1) glControl window is white with a red frame and diagonals from each corner.
2) The form opens flickers a few times and then exits without errors. With this in mind, if only one call is performed to the teapot I get a solid black window.
I have done a few other simpleprograms with OpenTK to get the hange of it and those are working ok.
Is there a special interface of some sort I'm overlooking between the glControl and what the glutSolidTeapot is tring to do?
Posted Wednesday, 21 July, 2010 - 23:18 by jrwatts
IIRC, you need to initialize GLUT before you can use any of its functions, so you'll need to DllImport and call that function, too (I don't recall the exact name off the top of my head).
Comments
Re: Need help with Teapot program (Newbie to OpenTK )
By teapot, I assume you're referring to glutSolidTeapot()?
Unfortunately, glutSolidTeapot() is part of GLUT -- which OpenTK doesn't wrap. Therefore, that functionality isn't available.
You could duplicate the functionality by downloading the model and writing a file loader for it. This may seem daunting, but if it's for a class then this is probably a great way to learn.
Feel free to ask questions.
Re: Need help with Teapot program (Newbie to OpenTK )
Good info!
I understand the vertices given, but what are these refering to, before the given vertices?
Rim:
{ 102, 103, 104, 105, 4, 5, 6, 7,
8, 9, 10, 11, 12, 13, 14, 15 }
Body:
{ 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27 }
{ 24, 25, 26, 27, 29, 30, 31, 32,
33, 34, 35, 36, 37, 38, 39, 40 }
Lid:
{ 96, 96, 96, 96, 97, 98, 99, 100,
101, 101, 101, 101, 0, 1, 2, 3 }
{ 0, 1, 2, 3, 106, 107, 108, 109,
110, 111, 112, 113, 114, 115, 116, 117 }
Handle:
{ 41, 42, 43, 44, 45, 46, 47, 48,
49, 50, 51, 52, 53, 54, 55, 56 }
{ 53, 54, 55, 56, 57, 58, 59, 60,
61, 62, 63, 64, 28, 65, 66, 67 }
Spout:
{ 68, 69, 70, 71, 72, 73, 74, 75,
76, 77, 78, 79, 80, 81, 82, 83 }
{ 80, 81, 82, 83, 84, 85, 86, 87,
88, 89, 90, 91, 92, 93, 94, 95 }
Re: Need help with Teapot program (Newbie to OpenTK )
My apologies, that's the standard patch data for the teapot. You'd need to tesselate that to get your triangle data.
I'm sure Google will turn up a version of the teapot that uses triangles :)
Re: Need help with Teapot program (Newbie to OpenTK )
Tutorial 14 on this page has the triangle data encoded into a .c file. You should be able to extract the vertex/connectivity data from that easily enough.
Sorry about the mixup on the patch data.
Re: Need help with Teapot program (Newbie to OpenTK )
OpenTK doesn't wrap GLUT but that doesn't mean you cannot DllImport glutSolidTeapot yourself from a native GLUT implementation (like freeglut).
Re: Need help with Teapot program (Newbie to OpenTK )
Almost there.
I was looking at the DllImport earlier, but for the life of me couldn't find the dll name to import.
Thanks for all the great help!
Re: Need help with Teapot program (Newbie to OpenTK )
Well that didn't work very well.
I get one of two things:
1) glControl window is white with a red frame and diagonals from each corner.
2) The form opens flickers a few times and then exits without errors. With this in mind, if only one call is performed to the teapot I get a solid black window.
I have done a few other simpleprograms with OpenTK to get the hange of it and those are working ok.
Is there a special interface of some sort I'm overlooking between the glControl and what the glutSolidTeapot is tring to do?
Re: Need help with Teapot program (Newbie to OpenTK )
IIRC, you need to initialize GLUT before you can use any of its functions, so you'll need to DllImport and call that function, too (I don't recall the exact name off the top of my head).
Edit: glutInit is the function you want.