This document provides an overview of shadows and perspective in architectural engineering. It defines key terms like shade, shadow, light source and direction. It explains the purpose of indicating shades and shadows is to visualize the third dimension, identify surface levels, and give designs a sense of reality. It also outlines different surface and line types like vertical, horizontal, diagonal and free position. Finally, it demonstrates point shadows and point imaginal shadows on different surface types. The overall purpose is to teach students the basics of how to indicate and understand shadows in architectural drawings.

1. Shadow and Perspective
Architectural Engineering
Department
First Year
Dr. Bahaa Elboshy
1st Lecture

2. Perspective
Shade and Shadow

5. Why to Learn
Shade and
Shadow?

6. The purpose of indicating shades and shadow
• Visualize the third dimension of the objects
• Identify the deference between surfaces levels
• Give to the objects represented an effect of
reality which help in understanding the
drawings.
• Help in architectural presentation to give an
advantage for the architectural design.

7. Shade
Shadow
The dark area in which
sunlight or other bright light
is blocked .
The dark shape that appears
on a surface when an object
blocks sunlight or other light

8. Light Source and Direction

9. Identify the Mass

10. Earth Line
Elevation
Plan
Side View
Earth
Line
Elevation
Plan
Side View
Surfaces in the space

11. Surfaces Types
• Vertical Perpendicular Surfaces

12. Surfaces Types
• Vertical Surfaces

13. Surfaces Types
• Vertical Parallel Surfaces

14. Surfaces Types
• Perpendicular Surfaces

15. Surfaces Types
• Horizontal Surface

16. Surfaces Types
• Diagonal Surface Parallel to Earth Line

17. Surfaces Types
• Free Position Surface

18. x
y
x
y
x,y
x
y
x,y
Line Types
• Vertical Line

19. x
y
x,y
xx
y
x,y
y
Line Types
• Horizontal Perpendicular Line

20. x
y
x
x
xy
x
y
y
y
Line Types
• Horizontal Parallel line

21. x
y
x
x
xy
x
y
y
y
Line Types
• Parallel line

22. x
y
x
x
x
y
x
y
y
y
Line Types
• Horizontal Line

23. x
y
x
x
x
y
x
y
y
y
Line Types
• Free Position Line

24. Light Direction

25. Point Shadow

26. X
X
X
Point Shadow
• Point Shadow in Vertical Surface
x
x
xo

27. x
x
x
Point Shadow
• Point Shadow in Horizontal Surface
x
x
xo

28. Point Imaginal Shadow

29. Point Imaginal Shadow
• Point Imaginal Shadow in Horizontal Surface
x
x
x
x
x
X0 X0

30. Point Imaginal Shadow
• Point Imaginal Shadow in Vertical Surface
x
x
x
x
x
x0 x0

31. THANK YOU
DR. BAHAA ELBOSHY