Hands On DarkBASIC Pro - Digital Skills

FIG-31.5
The MAKE OBJECT
BOX Statement
FIG-31.6
MAKE OBJECT BOX objno
, w h d
In the diagram:
objno is an integer value giving the ID to be assigned to the box
being created. No other 3D object in the program can be
assigned the same value.
w is a real value giving the width (x-dimension) of the box.
h is a real value giving the height (y-dimension) of the box.
d is a real value giving the depth (z-dimension) of the
box.
For example, the line
MAKE OBJECT BOX 2, 10, 3.7, 12
would create a box with ID 2 which is 10 units wide, by 3.7 units high, by 12
units deep.
The MAKE OBJECT SPHERE Statement
The MAKE OBJECT SPHERE Statement
The MAKE OBJECT SPHERE statement creates a sphere of a specified diameter
but offers extra options. The statement has the format shown in FIG-31.6.
In the diagram:
objno is an integer value giving the ID assigned to the
sphere being created.
diameter is a real number representing the diameter of the
sphere.
rows is an integer value specifying the number of lines
of latitude making up the sphere.
columns is an integer value specifying the number of lines
of longitude making up the sphere.
The statement
MAKE OBJECT SPHERE 3,40.0
, ,
, ,
,
MAKE OBJECT SPHERE objno diameter
rows
columns
would create a sphere with a diameter of 40 units and assign it the ID number 3.
However, the sphere produced is constructed from a relatively small number of
polygons and hence its curve is not particularly smooth. By using the rows and
columns values, we can control the number of polygons used to construct the sphere
and thereby produce a more realistic effect. For example, the line
758 DarkBASIC Pro: 3D Primitives