There is a universal law in the scenery seen by human eyes, that is, the near things are imaged big and the far things are imaged small, commonly known as the near big and the far small. Standing under a tall building and looking up, you will see that the windows near the roof are shorter and the windows near the ground are larger. If you draw according to this principle, the things you draw will look more comfortable. Similarly, if you use this principle in reverse, it is also true. For example, Michelangelo's famous sculpture "David" originally stood in Florence's municipal square. Because the statue is tall, the audience usually looks up at a relatively close distance, and Michelangelo enlarges it appropriately when designing.
In the same way, ground painting also uses this principle. The things in the distance are enlarged in proportion, and the images of different distances in the eyes of the audience are overlapped on a plane due to the optical illusion, resulting in a three-dimensional illusion.
However, in practice, first of all, we should choose a suitable occasion and design a fixed perspective. The paintings on the ground are not three-dimensional from any angle, but can only be viewed from a fixed angle, so they are usually taken from the designed position after painting and spread on the Internet. In this way, designers need to conduct on-the-spot investigation to find suitable venues and suitable viewing points. After finding it, he can take photos from the viewing point with a tripod so that he can use computer-aided design when he goes back. Generally speaking, it is better to choose a generous brick yard to paint.
Specific steps:
(1), select the site and the viewing point (taking the square brick site as an example).
② Take photos with a tripod from the viewing point.
③. Input the photos into the computer and open them with photoshop.
④ Create a new layer and name it "Picture". Paste the picture to be drawn into the new layer, and adjust the size of the picture so that it does not exceed the scope of the square brick floor (in this way, when drawing, the picture can only be completed within the scope of the square brick floor. If it cannot be drawn outside, this step must ensure the proportion of the picture and avoid any arbitrary deformation, such as perspective deformation).
⑤. Adjust the transparency of the "picture" of the layer to 50% (semitransparent), and press Ctrl+E to merge the layers downwards, so as to obtain the pattern with overlapping tiles and pictures.
⑥. Frame the part with the selected area, ctrl+C and Ctrl+V, and paste the part as a new layer.
7. Use the deformation tool in editing to adjust the shape of the new layer and carry out perspective deformation. The goal is to change the square of the square brick floor into a square with the same size through deformation adjustment (in the photos taken back, the square brick should be trapezoidal, which is caused by the perspective principle, but now the square brick is restored to a square by reverse operation, and the effect of looking down from directly above the floor is obtained). The figure you want to draw will be deformed together with the square brick floor (because it has been combined with the square brick floor in step 6).
8. Create a new layer, name it "sample", stick the picture you want to draw on this layer again, and use the deformation function to pull its shape to overlap with the picture shape of the lower layer. In this way, you get the sample that needs to be drawn on the ground. If the operation is convenient, you can also check the samples according to the square brick grid.
9, print samples,
10, buy enough colored chalk, return to the selected venue, and enlarge it carefully according to the sample.
1 1, please stand at the selected viewing point to watch or take photos after painting.