Irrlicht Engine

Hello all, This question is more a programming question regarding virtuals and inheriting from the ITimer class. Basically I already know that I can use the device to get the Itimer (e.g. device->getTimer()) but what I would like to understand is how to inherit from the ITimer class directly like th...

Why do you think it doesn't work? The trajectory from A to B or vector go straight from A to B is: A' = A + D*dt*(speed) which is a very simple problem. If you want to get the number of points until you reach B. Just divide TotalDistance/numofsegments = segment. Then just do A' = A + D*segment. The...

If you want to make the camera to focus from point A until B in 10 seconds. Just do it something like this. totalTime = 10; C = (B - A) TotalDistance = (C).getDistance D = Normalised(C) speed = Distance/totalTime You can assume dt to be delta time from last frame. Irrlicht already giving you that. ...

Ideally you don't need quaternion for that. Since you have target position vector A and B. The direction from A to B is C = B - A. Once you know the direction. All you have to do is normalise(C) = D. Then moving from A to B is. A' = A + D*dt*(speed) Then just do normal camera setTarget(A') Goodluck...

Hello all, So far this is the question... and I'll try to explain this the best I can. Below I have a pic of the problem , the teal line is the camera. The red and black lines are the camera look at vectors (respectively the camera_vector_initial and camera_vector_final ). The obj_final is the black...

No problem solved it.

Custom primitive doesn't matter, the way you apply a shader is the same. Pseudocode: if (a) color = texture1; else color = texture2 Then you need to figure out how to pass the variable. I recommend the vertex alpha color, which you don't seem to use for anything else. Can't really give more specifi...

You will have to map such in the shader if you want one draw call with many different textures. Using glsl I assume; I thought that was only for shading but I guess textures fall into that category. Do you have any examples ( I have looked at the shading tutorial, but that doesn't address custom pr...

I have the following code which initializes about 10k randomly placed polygons (square shaped faces) into a volume of space 200 irrlicht units cubed. What I was hoping to do is to try attaching various textures randomly (one texture per polygon face) and using a single drawvertexprimitivelist call t...

Woah, that looks cool! I didn't even know what to expect when I ran it, but now I see sort of what you were doing :mrgreen: Thanks for fixing up some of the code for me, it's a bit clearer now. By the way, that first point about the camera was completely my mistake x)... I didn't see that it had an...

Honestly, if you could comment your code a bit better, that would be great ;) However, here were some things I saw: * Camera position and target both set to 0? That's undefined behavior, I think. If you're not using the camera, just declare it with the default values. * Use the irrlicht logger, or ...

There are six indices per four vertices. 25000*6/4 = 37500. Your index array can only hold 32767. (I don't know why you want to size it to 2^n -1; I guess you are confused between size of an array and largest index.) Oh. Sorry I counted wrong thanks for answering so quickly. By the way is there an ...

Thanks guys so far... Now the drawvertexprimitivelist crashes for some reason. Also note the output where index_offset32852 vertex_count: -2142076847 Somehow the variable vertex_count is "garbaged" I can't see why though. Here's the code. It tries to draw 20k planes randomly spaced in 3d (...

Good question, The limit is actually 4294967295, because you use a u32 to reference it in the function call. However, to have your indices access more than 65535 vertices, you must call the function with EIT_32BIT instead of EIT_16BIT. Note that this will also double the memory used for each index....

Thanks a lot works now! On another note do you know the limit of indices array that I can pass into drawvertexprimitivelist? I'm assuming that too is 65535 but not sure. Anyways I'll mark this as solved, thanks for your help.