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Description
This, Fig. 6, is for drawing the extension of the other end of the roof.

Since very often the base of a structure will be at too shallow an angle to work with very well, you may want to draw a "sub-floor."

Don't let the initial appearance of this fool you- it is not at all difficult once you know what it really is.

Do you remember how, in the 2VP pages, we drew cubes and blocks? How you draw a square or rectangle, drop a line from the front most corner, and from there draw the rest of the block? You do the same exact thing here, starting with the front corner of the floor.

Leave out the extension for now; just use the original floor. You now should have a block with the structure's floor as the top.

Now you can extend the VP2 lines through it, drop lines from the corners of the extension (the darkened area), and mark off where they meet, as shown.

Now you have a sub-floor, and its extension. Notice how much more room you have to work with? Since the sub-floor's corners are directly below the corners of the structure, anything you do here will work as well, but it is easier now.

Once again, find the center of the sub-floor, WITHOUT the extension- that is very important!- and draw a line from VP2 through it.

Now, from the front corner of the extension, the lower front corner, draw a line through the center. As in the part about extending a shape in one direction, it will connect to the line from the Vanishing Point outside of the original part.

Draw a line through that point from VP1, and you have your new extension!

From the corner point of the extension on your side of the structure and the middle point of the extension, draw up vertical lines. Where they touch the lines extended from that end of the roof is the visible extension of the roof on that end.

I did not draw a line from the peak to the other corner, since it would not be visible in any case. But you can see where you would if you wanted to.

If you have enough room with the floor of the structure, or have precise enough art gear, you do not have to use the sub-floor method.

And there you have it! Now, if you want to extend the roof on the sides, it is as easy as in Fig. 3.

You have one way of doing this now!

Description
This, Fig. 6, is for drawing the extension of the other end of the roof.

Since very often the base of a structure will be at too shallow an angle to work with very well, you may want to draw a "sub-floor."

Don't let the initial appearance of this fool you- it is not at all difficult once you know what it really is.

Do you remember how, in the 2VP pages, we drew cubes and blocks? How you draw a square or rectangle, drop a line from the front most corner, and from there draw the rest of the block? You do the same exact thing here, starting with the front corner of the floor.

Leave out the extension for now; just use the original floor. You now should have a block with the structure's floor as the top.

Now you can extend the VP2 lines through it, drop lines from the corners of the extension (the darkened area), and mark off where they meet, as shown.

Now you have a sub-floor, and its extension. Notice how much more room you have to work with? Since the sub-floor's corners are directly below the corners of the structure, anything you do here will work as well, but it is easier now.

Once again, find the center of the sub-floor, WITHOUT the extension- that is very important!- and draw a line from VP2 through it.

Now, from the front corner of the extension, the lower front corner, draw a line through the center. As in the part about extending a shape in one direction, it will connect to the line from the Vanishing Point outside of the original part.

Draw a line through that point from VP1, and you have your new extension!

From the corner point of the extension on your side of the structure and the middle point of the extension, draw up vertical lines. Where they touch the lines extended from that end of the roof is the visible extension of the roof on that end.

I did not draw a line from the peak to the other corner, since it would not be visible in any case. But you can see where you would if you wanted to.

If you have enough room with the floor of the structure, or have precise enough art gear, you do not have to use the sub-floor method.

And there you have it! Now, if you want to extend the roof on the sides, it is as easy as in Fig. 3.

You have one way of doing this now!