Canadian0469

05-22-2008, 07:40 PM

Hey all,

I'm stuck. I'm trying to draw a pyramid of cubes, 6 rows high, and each row is five cubes deep. I've got an inner loop that succesfully makes a line of 5 cubes along the z-axis but now trying to get 6 rows of these. I've got an algorithm down but I'm not sure about the order of multiplication here since I have inner body loops. For example, if I have:

glPushMatrix();

glTranslatef(0.0, 20.0, 0.0);

for (row = 0; row < 6; row++) // draw 6 rows

{

glTranslatef(0.0, -4.0, 0.0);

[...]

Which translation matrix would be multiplied first?

Here's the code:

GLint row = 1;

GLint i = 0;

glPushMatrix();

glTranslatef(0.0, 20.0, 0.0);

for (row = 0; row < 6; row++) // draw 6 rows

{

glTranslatef(0.0, -4.0, 0.0);

GLint j = 0;

while (j < row + 1)

{

glTranslatef(4.0, 0.0, 0.0);

for (i = 0; i < 5; i++) // draws 5 cubes along z

{

glPushMatrix();

[...]

glPopMatrix();

}

j++;

}

}

glPopMatrix();

The inner loop is working fine and I seem to be getting the 6 rows only the rows are scattered and not in the pyramid shape I'm going for...

- Canadian0469

I'm stuck. I'm trying to draw a pyramid of cubes, 6 rows high, and each row is five cubes deep. I've got an inner loop that succesfully makes a line of 5 cubes along the z-axis but now trying to get 6 rows of these. I've got an algorithm down but I'm not sure about the order of multiplication here since I have inner body loops. For example, if I have:

glPushMatrix();

glTranslatef(0.0, 20.0, 0.0);

for (row = 0; row < 6; row++) // draw 6 rows

{

glTranslatef(0.0, -4.0, 0.0);

[...]

Which translation matrix would be multiplied first?

Here's the code:

GLint row = 1;

GLint i = 0;

glPushMatrix();

glTranslatef(0.0, 20.0, 0.0);

for (row = 0; row < 6; row++) // draw 6 rows

{

glTranslatef(0.0, -4.0, 0.0);

GLint j = 0;

while (j < row + 1)

{

glTranslatef(4.0, 0.0, 0.0);

for (i = 0; i < 5; i++) // draws 5 cubes along z

{

glPushMatrix();

[...]

glPopMatrix();

}

j++;

}

}

glPopMatrix();

The inner loop is working fine and I seem to be getting the 6 rows only the rows are scattered and not in the pyramid shape I'm going for...

- Canadian0469