It is also possible that the color of your brush is the same as the background color.
(2) See if this layer is covered by another layer. Check whether the brush you selected is valid. Check whether the layer being edited is locked as opaque. If the area of the selection tool is still on the screen (usually a small dot), just click the gray part off the screen with the selection tool. ?
(3) Uninstall sai software and drivers, reinstall them, and then restart the computer.
Second? We should not only master the sai software, but also master the original painting technology of board painting systematically and comprehensively. ? Sai software is simple and easy to master, but it is not enough to master it. We need to improve it more, because we can't do anything just by mastering it. Do you know anything about painting? Do you know the original painting? Do you know board painting? Can I make money with sai software? I believe that most students' answers are "no, no, no". Therefore, we should have a higher level of promotion and further enhance our thinking mode and vision.
? At present, sai software is widely used in the original painting board drawing, and this industry is also very promising, so if you really want to have a good future, you must learn the original painting board drawing, and I can provide you with relevant help. At eight o'clock every night, I will give a free on-site lecture on the original drawing and the use of sai and ps software. Listening to my class can save you a lot of detours, which is quite daunting. Students who want to listen to my class and need relevant information, please enter my original sketch tutorial information skirt: the first position in the front is: 239, the second position in the middle is: 869, and the last position in the tail is: 377. Just combine the above three groups of numbers in order. Software is just a tool, we must master it well, but we must master the internal strength of this software, so students.
Three. I don't know the most basic elements of the competition, but dare to sketch? SAI is an easy-to-use drawing software. Because it is specially made for drawing, many functions are more humanized than PS. PS is image processing software and AI is vector drawing software. There is no difference between good and bad, but the emphasis is different, and the differences will be introduced in detail later.
(1) Common shortcut keys.
All left buttons can be replaced by pressure sensitive pens.
E: If you keep pressing E, the pen will become an eraser. If you let it go, it will become a pen. If you click on it, it will become an eraser.
N: pencils.
V: pens.
B: spray gun.
C: marker.
D: it's safe
X: conversion of background color and foreground color.
-:Switches the foreground color and transparent color (i.e. changes to eraser).
A: Choose a pen.
S: selection erasure.
D: clear the current layer.
F: Write it down (the content of the current layer is merged into the lower layer, which should have been cleared, and ctrl+E is merged down).
H: Turn left and right (is it useful? Turn it over to see if it's crooked.
E: eraser.
Ctrl+Z: undo.
(2) Color and tool association panel.
1. color wheel
The color wheel is the most thing except the brush in SAI, which is used to select colors.
A custom color wheel can be used to put your usual colors. Right-click the small grid "Add Color".
Post-it notes are equivalent to draft paper, which can be drawn out for color matching, which is a watercolor palette. If not, you can click on the top to take it back.
2. Shape selection &; Adjustment tool
↓ Rectangle tool: You can choose a neat rectangle (as shown below, the following material comes from the Sai resource library).
Lasso tool: Compared with rectangle, this shape can be freely selected.
Magic wand tool: you can choose a large area and be more accurate, such as the corners of clothes.
In addition, there is also a selection tool, the "selection pen" in the brush will be more detailed than the wand. Therefore, after the wand is used up for automatic selection, it is more common to use "selection pen" and "selection brush" for correction. PS。 ? Deselect: ctrl+D
↓ Move tool: You can move the picture on the layer, but it is generally unnecessary, because you can just hold down ctrl and drag it with the mouse.
Zoom tool: you can enlarge the image, which is generally unnecessary. You can use the navigator and mouse wheel.
Hand tool: used to move the canvas, as above, you can use the mouse wheel instead.
↓? Eyedropper tool: You can absorb any color on the canvas, or you can use the right mouse button.
3. Brush is the most used thing in SAI.
There are only a few basic brushes. Many brushes, such as blur, are transformed from watercolor pens, so you can match them with brushes that suit your own style. People often share brushes online, and brushes can be downloaded and installed. The following figure
4. Brush Settings
Examples of shape and material selection are shown in the figure below.
Example of pen pressure setting, as shown below ↓
5. Jitter correction
This is easy to use, it can make twisted lines round. The higher the value, the greater the correction.
Example of jitter correction ↓
(3) Layer Association Panel.
First, click "File" in the upper left corner-select "New File"
Step out of the box and click "OK". At this time, if you look at the layer association panel on the left, it will be very bright.
1. Navigator can be used to rotate and zoom, and the rightmost square is restored.
2. Draw paper &; Painting materials
It is not difficult to understand the material of painting paper, and it is necessary to mention the watercolor edge of the painting material effect.
Watercolor edge can show the edge effect of dry pigment, which is used to imitate watercolor, as shown below.
Watercolor edges can also be used to strengthen edges and increase layering, as shown below.
The photo was touched by a blue pencil to interview the guest's stone body.
3. Mixed mode
Generally, shadows are superimposed, and high-light objects are filtered or linearly thinned. The following figure
4. Opacity (for local coloring)
Check "Protect Opacity" so that opaque areas of the layer can be repaired, which ensures that the color does not exceed the boundary.
It's out of bounds without checking.
5. Cut and paste layer mask (upper shadow)
This function is complex but common, so it needs to be explained in detail. The premise of using this function is that you have more than two layers.
Write red and blue circles on different layers. At this point, click on the blue circle layer to create a clipping layer mask.
The blue circle outside the red circle will be cut off. You can use the red circle as the parent layer and the clipping layer as the subsidiary layer, that is, the sub-layer.
But the whole blue circle still exists. You can even move the blue circle, and it will only appear as a red circle.
↑ Can you create a clipping mask layer by repeated superposition, and draw on the clipping layer or display it only within the red circle?
6. Brightness-Transparency (Line Drawing)
Brightness-transparency is also a useful function, which is generally used to extract line drawings. For example, if you want to use a line sketch of a flower in a painting, you can process it in another layer and put the line directly on it.