漂浮球体立体错觉
原文链接：https://tabithaannthelostsock.blogspot.com/2022/02/floating-spheres.html
日期： 2022-02-14
标签： 轮廓线、维度、形体、欧普艺术、视错觉、重复线条、明度
本课中，我们将运用线条、形状、明度、空间与运动感，使画面呈现出三维立体效果并富有动感。我们通过重复线条来营造运动感；通过线条与形状的重叠、以及对圆形进行明暗处理，使其呈现立体感；再通过改变形状大小，营造出球体逐级向画面纵深下沉的视觉效果。
- 在纸张下半部分画一条弯曲（但不可过于夸张）的线条。
沿此线条在其正下方再画若干条相似的弯曲线条。
- 在该线条上添加两个圆形，使每个圆形最底端恰好隐没于这条“引导线”后方。
- 在前一条引导线上方再画一条弯曲线条，并在其正下方继续添加相似的弯曲线条。
在此新引导线上方再画一个圆形，其尺寸应小于前一组圆形。
- 持续添加更多引导线及跟随其后的线条，并在每条新引导线上方添加圆形——越靠上方的圆形尺寸越小。
- 继续添加……
- 继续……
直至抵达纸张顶端……
- 用铅笔在每条引导线正上方画一条粗线。
用铅笔为每个圆形画一条粗环线（即加粗外轮廓）。
- 用铅笔在圆形内部向中心方向晕染，在引导线处则向上方晕染，以此增强画面的纵深感与立体感。
2022年春季学期第二节课
六年级学生作品如下。
梅兰妮·C.，七年级
漂浮球体立体错觉
Original: https://tabithaannthelostsock.blogspot.com/2022/02/floating-spheres.html
Date: 2022-02-14
Tags: contour line, dimesion, form, op art, optical illusion, repeated line, value
In this project, we are using line, shape, value, space, and movement to make the picture appear like it is three dimensional and moving. We will repeat lines to make the picture have movement. We will use overlapping of line and shape and shade circles to make them appear three dimensional. We will change size of shape to make them appear as thought the descend into the space.
- Draw a curvy (but not TOO curvy) line at bottom half of paper.
Follow the line with more lines like it underneath.
- Add 2 circles to the line, making the very bottom of the circles hide behind the "leader line".
- Add another curvy line above the previous one, following along underneath it with more lines.
Make another circle above this that is smaller than the one before .
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Keep adding more leader and follow the leader lines with circles above getting smaller as they go higher.
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Keep going...
- and going...
until you reach the top of the paper...
- Use PENCIL to make a thick line above each leader line.
Use PENCIL to make a thick ring around each circle.
- Blend the pencil inward on the circles and upward from the leader line to make the picture appear to have depth and dimension.
2nd period Spring 2022
6th grade below.
Melanie C. 7th grade