## Week 5 :

### Tuesday, September 25

#### No sketchbook assignment was given so none is due.

#### Bring all your usual drawing supplies and especially a ruler or straight edge.

#### Summary:

- Today we moved to the 3rd kind of perception we will be covering in this class: The perception of relationships.
- We discussed linear perspective in particular.
- The 5 key concepts to understand in linear perspective are: 1. Point of view 2. Picture plane 3. Horizon line 4. Vanishing point and 5. Converging lines.
- Using your glass picture plane and view finder I had you go look for "one point" perspective in the hallway. See below for a more thorough explanation of how we did that.
- Then we did a more polished drawing of the hallway using the principles of linear perspective.
- HOMEWORK: Look up the word "paradox" and make sure you understand what it means. We talked at the beginning of class about how linear perspective is a kind of paradox. For example our mind knows parallel lines never meet, but in linear perspective they do meet at a vanishing point. So we need to draw what our eye sees and not what our intellect knows in order to make an accurate drawing of parallel lines in space.
- HOMEWORK: Using the principles of linear perspecitve and the method illustrated below, make a detailed one-point perspective drawing of a room in your house.

### Sep 25课程摘要 (Translated by Vivien)

- 今天这节课我们将学习第三种观观察方法： 联系观察法。
- 我们特别的讨论了线性透视。
- 线性透视的五个关键概念： 视点，投平面，水平线，消失点，聚合线。
- 使用你的玻璃投平面和取景器，我已经给出了你要取的走廊的“一点”。参考下面可以更清楚地告诉我们该如何做。
- 然后使用我们线性透视的原则来对走廊进行绘图。
- 作业：查找单词 "paradox" （“悖论”） 的含义，并确保你能清楚的理解这个单词的意义。我们已经在课上讲过了线性透视的悖论。例如，我们知道平行线是不可能交集的，但在线性透视中他们做了个消失点。所以，我们要去描绘的是我们眼睛所看到的，而不是我们理解意义上的去准确画出空间中的平行线。
- 作业：运用我们所学的线性透视的原则和下图的引导，在你的房间取一个详细的点，画一张透视图。

You can read more about paradox HERE. You can also read more about linear perspective HERE.

Looking down a hallway like this the majority of horizontal lines that are receding into space are parallel to each other. All these parallel lines will be pointing toward the same vanishing point. When a drawing only has one vanishing point it is called "one point" perspective.

Here are the perspective lines without the image. Look back and forth at the two so you can see how dramatically these "horizontal" lines angle up and down - some are almost vertical. This is the apparent paradox we addressed today: to represent horizontal lines as we see them, we must draw them at angles that can be nearly vertical.

Remember that the horizon line can be located anywhere in your composition. No matter where you choose to put it though, it ALWAYS represents your eye level. So if you want to draw more sky put your horizon line lower on the page. If you want more of the ground put your horizon line at the top. Everything above the horizon line is above your eye level, everything below it is below your eye level. Many students feel like they have to put the horizon line in the middle of the page but you don't. See below for some examples of horizon lines that are not in the center of the composition.

### Thursday, September 27

#### Bring all your usual drawing supplies and especially a ruler or straight edge.

#### Summary:

- Today we continued our discussion about linear perspective. I demonstrated how to construct a three dimensional box using one-point and two-point perspect. See the videos below to repeat the demonstration.
- In one-point perspective there is only one vanishing point. In two-point perspective there is two vanishing points. There can be many vanishing points in an image but these are the two basic types of linear perspective we will cover.
- Remember the 5 key concepts to understand in linear perspective are: 1. Point of view 2. Picture plane 3. Horizon line 4. Vanishing point and 5. Converging lines.
- The horizon line is the same as your eye level. We discussed several ways you can determine the horizon line in an image.
- HOMEWORK: Complete your one-point perspective drawing of a room in your house. Make sure it is one-point perspective. If you are not sure, see the examples below.

### 案由 (Translated by Google Translate)

- 今天，我們繼續我們的討論線性透視。我演示了如何構建一個三維框，使用單點和兩點透視。請參閱下面的視頻，重複示範。
- 在單點透視只有一個消失點。在兩點透視有兩個消失點。可以有許多圖像中的消失點，但這些都是線性透視，我們將介紹兩種基本類型。
- 記住5個關鍵概念的理解線性透視：1。點來看，2。圖像平面3。天際線4條。消失點和5。會聚線。
- 你的眼睛水平的天際線是一樣的。我們討論了幾種方法可以判斷圖像的水平線。
- 作業：完成您的單點透視圖的一個房間，你的房子。請確保它是單點透視。如果你不知道，看下面的例子。

Demonstration: one point perspective.

Demonstration: two point perspective.

Three ways to determine the horizon line when you can't see the horizon.

HOMEWORK: Draw a room in your house using one point perspective. Look at the images below for one good and one bad example of the point of view you would want to use for your homework.