How to set up a fan shaped clipping area on Android

0 can cut out a fan in the canvas.

public void getsector(canvas canvas, float radius, double fromdegree, double todegree, op op)

The distance from the point to the center of the circle is less than the radius.

A straight line from the point to the center of the circle, with an inclination angle within the fan angle.

If the above conditions are met, it can be determined that the point is in the fan.

There's an easier way inside Android.

Compare the fan, make a region object out, and then call the contains method.

Preparation tools Materials: a computer, Photoshop CS6 software.

1. Open a ** with Photoshop CS6 software, and double-click the Photoshop CS6 software background layer to unlock the layer.

2. Photoshop CS6 software press the keyboard Ctrl and T keys at the same time, right mouse button **, select Deformation.

3. Under the menu bar of Photoshop CS6 software, click Custom Select Sector.

4. Photoshop CS6 software will become a fan after clicking.

1.Open the lotus flower in PS**, you can name this layer "lotus".

2.Open a fan-shaped graphic or **, place it on top of the "Lotus" layer, create a new layer, and name it "Fan".

3.Then use a pen to outline the fan-shaped path, 4In the "Path" panel at the bottom right of the PS software window, select the path you just drawn, right-click on the path thumbnail, and select the "Make Selection" command in the menu that appears (the rest can be defaulted, there is an option of "Feather Radius", consider the value setting yourself).

5.Back in the Layers panel mode, move your mouse over the Lotus layer and select it.

6.Then use the "Copy" command in the "" menu, 7Create a new blank layer on the Lotus layer and name it Fan Lotus;

8.Use the "Paste" command in the "" menu, so that a "Fan Lotus" with a fan-shaped frame has been made.

Note: In order to highlight the effect, you can set the display status of other layers to off (just turn off the small eye icon on the left side of the layer).

This method does not require the use of "layer masks" to get the effect you want.

Open the lotus flower ** in PS, then use a pen to outline the fan-shaped path, hold down Ctrl+Enter to load the path into the selection, and use the layer mask to get the effect you want.

Create a new layer, draw a circle, draw a triangle Combine them, remove the unwanted lines, select the selection, switch to the desired layer point to reverse the selection, delete, and the rest is a fan.

Decisive ps

First import the picture you put in first.

CTRLA Select All.

Create a new layer 1 with g blacked out.

Layer 1 ctrla, ctrlc

Then ctrlc on the ** you want to work on

ctrlt resize to fit.

The W spot is glued in outside of Figure 1 and right-clicked.

Then press delete on your **layer.

Customize a veiw, add the setprogress property, and draw a sector area.