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Here we want to add simple stairs going up and down on the right side of this background.
1. Where is the vanishing point? In this case there are two - one for the lower side and one for the upper side of this room, but we will start building stairs on the ground so Vp1 is of interest now.
2. The floor is easily tiled according to Vp1.
3. We chose the areas where the stairs up and the stairs down shall be according to Vp1. Whith this tiled floor it is easier.
4. Now the shape of the stairs is added. It stands in the middle of the room so a line is added on the right wall where it ends.
5. A copy of the stairchape is scaled until it fits. The upper side has to be determined according to Vp2.
6. Now we draw lines between corresponding points on the stair-shapes.
7. After deleting all the lines which are not needed anymore, the first part is done.
8. We use the same shape for downstairs as we used for upstairs. In this case we can only see one step.
9. Steps are added according to Vp1
10. Another line is deleted and the stairs are finished
11. Some decoration and security fixes in the end... and colour..
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