what’s the best way to determine the relative sizes of objects - say you are modelling objects in a room - also is there a way of finding the location you are in the scene relative to real-world coordinates

any examples?

what’s the best way to determine the relative sizes of objects - say you are modelling objects in a room - also is there a way of finding the location you are in the scene relative to real-world coordinates

any examples?

You can get the coordinates of the last item you transformed from the modelview matrix as follows:

glMatrixMode(GL_MODELVIEW);

double mm[16];

glGetDoublev(GL_MODELVIEW_MATRIX,mm);

double x = mm[12];

double y = mm[13];

double z = mm[14];

double t = mm[15];

Hope that helps,

Paul Leopard

so where would the following code go - would have to set up an array?

glMatrixMode(GL_MODELVIEW);

double mm[16];

glGetDoublev(GL_MODELVIEW_MATRIX,mm);

double x = mm[12];

double y = mm[13];

double z = mm[14];

double t = mm[15];//what is this