Irrlicht Engine

to make it simple can some tell me how the matrix4 is build

0 1 2 3
4 5 6 7
8 9 10 11
12 13 14 15

0 4 8 12
1 5 9 13
2 6 10 14
3 7 11 15

I need this so I can access the 3º Row

ty

hi all

I need to change the view matrix to scale world space by -1 in the z-direction.
To do this, i need to flip the sign of the _31, _32, _33, and _34 member of the D3DMATRIX structure of view matrix.

i think i need to do something like this

core::matrix4 viewMatrix = driver->getTransform ...

Thanks serengeor

it solved my problem

Hi

I need an information, i have searched the forum but i didnt find, its possible to change the back buffer colour in run time mode.

i define it in the beginScene but then i need to change it is possible to do this? if yes please help me

Thanks in advance

Ghus

hi

thanks for all the replys it helped me to start searching

i found this parameter WithAlphaChannel in the SIrrlichtCreationParameters

documentation:

bool irr::SIrrlichtCreationParameters::WithAlphaChannel

Whether the main framebuffer uses an alpha channel.

In some situations it might be ...

hi

can anyone tell me if it is possible to set the background of the main irrlicht window fully/partial transparent

i tryied this

driver->beginScene(true, true, video::SColor(0,0,0,0));

but i only get a black screen, i cant see throught it :(

thanks in advance

note: i am using Linux Ubuntu ...

hi

call someone tell me if this is possible and point the way please

getSceneNode Material FromScreenCoordinatesBB

for a project that i am developing it would be nice if i can get the material layer from a node by clicking on it

so i could change its propertie if the material is green i would ...

hi

you can try this

IGUIScrollBar* scrollbarRotUP = irrGUI->addScrollBar(false,rect<s32>(100, 100, 110, 200), 0);

it creates a vertical scroll bar

hi linuxman

i think i can help but i creat another problem

if you swap this

#if (AR_DEFAULT_PIXEL_FORMAT == AR_PIXEL_FORMAT_BGR)

for this

#if (AR_DEFAULT_PIXEL_FORMAT == AR_PIXEL_FORMAT_RGB)

It will work but the colours of the web cam wont be accurate

can anyone help me with this =P

hi all

thanks for the reply (sorry if my english is not perfect :wink: )

so can i do something like this

const core::vector3df newPos;
f32 percent0to1 = 1.f * (timer->getTime() - startTime) / timeToTake;
if (1 < percent0to1) {
// we're done
}
else
{
newPos = startPos.getInterpolated(endPos ...

i have an array of positions and rotations of an object

how can i make the object to follow a path like in the spline but i need the rotation also

i have searched the forum but didn't find what i need

could somebody give me a tip

i have a problem of linkage i think

can someone tell me what libs and sources must be included and where

to this work fine in ubuntu with code blocks

i have a lot of this errors

../../../ARToolKit/lib/libARvideo.a(video.o): In function `ar2VideoCapStop':
video.c:(.text+0x95): undefined ...

hi

i read the above posts but i am facing a problem geeting it to work


error C2440: 'initializing' : cannot convert from 'const irr::core::dimension2d<T>' to 'irr::core::dimension2d<T>'
error C2440: 'initializing' : cannot convert from 'const irr::core::dimension2d<T>' to 'irr::core ...