Скачать или смотреть TFT-LCD Controller : [Video 08] RA8876 RA8877 Feature Draw function

Background Music : Lunar Landing 3'58 Silent Partner


Video Contents :

RA8876/RA8877 provides a Geometric Engine which can be used for drawing geometric figures on the display, such as drawing an Ellipse, Circle, Curve, Square, Line, Triangle and Square Of Circle Corner etc [ɛt 'sɛtərə]. User just need to set up a few program settings and will be able to show the geometric patterns on the display. These patterns can be used for displaying the control button, the dialogue box and so on. Before we start to use the drawing functions, we have to set up the location and the size for the active window. And next, let's start by adding geometric figures on the display.

Draw a line, please do the following. First, choose the color of line you wanted and set up the start point address. Second, set up the end point address. Third, enable the drawing line’s API, RA8876 will start drawing a line operation. And then a line is shown on your panel. Besides, user is able to change line’s color with RA8876 API.

Draw a triangle. First, set the address for the vertices of triangle. Second, execute the triangle’s API; RA8876 will start drawing a triangle operation. And then a triangle is shown on your panel. User is able to choose that the triangle is filled or not and change its color with RA8876 API.

Draw a square. First, set the start point address. Second, set the end point address. Third, execute the square’s API; RA8876 will start drawing a square operation. And then a square is shown on your panel. User is able to choose that the square is filled or not and change its color with RA8876 API.

Draw a circle. First, set the center point address. Second, set the radius of a circle. Third, execute the circle’s API; RA8876 will start drawing a circle operation. And then a circle is shown on your panel. User is also able to choose that the circle is filled or not and change its color with RA8876 API.

Draw an ellipse. First, set the center point address. Second, set the major radius of an ellipse. Third, set the minor radius of an ellipse. Fourth, execute the ellipse’s API; RA8876 will start drawing an ellipse operation. And then an ellipse is shown on your panel. Of cause, user is able to select that the ellipse is filled or not and change its color with the API of RA8876.

Draw a curve. First, set the center point address for the curve. Second, set the major radius of a curve. Third, set the minor radius of a curve. Fourth, choose the part selection for curve. The last step is that execute the curve’s API, RA8876 will start drawing a curve operation. And then a curve is shown on your panel. User is able to choose that the curve is filled or not and change its color, with the API of RA8876.

Draw a circle square. First, set the start point address of the circle square. Second, set the end point address of the circle square. Third, set the radius of round corners. The last step is that execute the circle square’s API, RA8876 will start drawing a circle square operation. And then a circle square is shown on your panel. User is able to choose that the circle square is filled or not and change its color, with the API of RA8876.