I am doing 3d max plugin application.In there keyframe interpolation.they claimed to use bezier curve. But bezier i know is interoplated from four control pointer. However they give bezier control...

Oh my,Twixn ,you are really helpful. thanx.
I got my problem solved ,simply by using glTexEnvi( GL_TEXTURE_ENV ,GL_TEXTURE_ENV_MODE,GL_COMBINE_ARB);...

Thankx mate ,Now i understand The GlEnable GLDisable Pair is the key to the render multitexture properly.

Now , i got that i have to use texture_env_combine AND texture_env_dot3 to modulate the...

I have this code to render a simple cube. the texture0 is simple texture 2d map then i decide to add reflection by using cubemap .as result i get rather weird effect.This is important ,for example ,i...

i don't think there is no more efficient map loading than the other. considering there is so many open souce ,why not just grab one and go on to use it. And later on, in the case you don't satisfy...

i don't think the SDL would be nothing to do with the font rendering. but please don't forget to use glrasterpos ,in the case you use wglusefontbitmap.

To easily to do font rendering, actually...

Don't i don't use the glDrawPixels, simply put the texture on the quads and a lot of texts on the background. what do you mean that i put it into the memory.

Thanx for attention, here goes the code rather descriptive



void OGLRender::DrawAll()
{
glClear();
funcion()...//set the ortho projection
Render2D(); // this part slow down the...

the background picture rendering slow my application greatly.
and background picture seldom changes and update in the rendering loop.
how can do to make the background is not erased and redrawed...

i thought the Computer Graphics PRINCIPLES AND PRACTICES is good at talking about the theory and princple behind the opengl.

try this
http://people.haptek.com/clint/pfx/

has good implementation of vector ,matrix ,quaternion,

there surely are a lot math lib you can google out .but i think ,to write one for your...

first you need to load the image using api auxDIBImageLoad .
then you need to use the following texture command like to generate the texture .

glGenTextures
glBindTexture
gluBuildTexture
...

To Relic
for a face in the 3D model,if we can know the face's the "normal vector" and "up vector" . we can construct the rotation matrix immediately to make face orient to the screen/user.but we...

[QUOTE]Originally posted by Relic:
Not sure about a direct way, but here's a general solution for Euler angles:

Not sure how to use this unmatrix ..~~~

it turn out that i am spending the...

Now ,relic, i have further problem,is this deduction reversible ?? i mean , if i get the rotation matrix first,can i get the get the rotation angle, and the rotating vector. i think this is very...

Oh,God,Relic, i adore you, you solved my problem.thanx ,greatly

Now , i've deduced in some way.but there is some problem during my deduction, please give me comments or correction .

for example if glRotate(50,1,0,0);

then according to the rotation formula...

I have the same problem, the formula is hard to figure ,especially what the uu(t) is ?do you got the idea now

In the perspective projection , for the given z coordiniate,
how i can get the leftest and righest x coordinates as well as the highest and lowest y coordinates.

For example, if i set the...

In the perspective projection , for the given z coordiniate,
how i can get the leftest and righest x coordinates as well as the highest and lowest y coordinates.

For example, if i set the...

I have to say there is no solution to make transparent window for the entire OpenGL scene. The average transparente window are made through GDI while
OpenGL use different hardware of graphics card...

How do you place your light source position?hah

So why Amerian rush to buy a product make in japan or made by japanese if they loathe japanese? And always they seem to love japan-made product from the bottom of their heart rather than home-made ....

Terrific , huge thanks to chowe6685.
Can not imagine that sentence can be organized like this and have such meaning.

"I've only visited Japan once, but I can only surmise that the general good manners I experienced on my trip would not have been reciprocated to a visiting Japanese national to Chicago. Not to say...