Transformations


Each transformation post-multiplies the current modelview matrix :
M = M x T, therefore vertex = M x T x vertex ( column order ),
i.e. The vertex is FIRST affected by the LAST transformation.
Read the code UPWARD

glMatrixMode(GL_TEXTURE); glLoadIdentity()*; glMatrixMode(GL_PROJECTION); glLoadIdentity()*; glFrustum / glOrtho(l,r,b,t,n,f); glMatrixMode(GL_MODELVIEW); glLoadIdentity()*; (...) glTranslatef(x,y,z); glScalef(x,y,z); glRotatef(angle, x, y, z); glMultMatrix{fd}(matrix); glVertex3fv(vcoord[i]);