Reference for Wiring version 0024+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.
| Class | Sprite |
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|---|---|---|---|---|---|
| Name | read() |
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| Examples | #include "Binary.h"
#include "Sprite.h"
#include "Matrix.h"
Matrix myMatrix = Matrix(0, 2, 1);
/* create a new Sprite instance
8 pixels wide, 4 pixels tall
*/
Sprite wave = Sprite(
8, 4,
b00011000,
b00100100,
b01000010,
b10000001
);
void setup()
{
}
int x = 0;
void loop()
{
myMatrix.write(x, 2, wave); // place sprite on screen
myMatrix.write(x - 8, 2, wave); // place sprite again, elsewhere on screen
delay(75); // wait a little bit
myMatrix.clear(); // clear the screen for next animation frame
if(x == 8) // if reached end of animation sequence
{
x = 0; // start from beginning
}
x++; // advance x coordinate to the right
// invert the value of all the pixels stored in the sprite
for(int j = 0; j wave.height(); j++) {
for(int i = 0; i wave.width(); i++) {
if(wave.read(i, j) == 1) {
wave.write(i, j, 0); // sets the sprite pixel located at i, j to 0
} else {
wave.write(i, j, 1);
}
}
}
} |
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| Description | The read(x, y) method returns the value stored at the x, y position of a sprite. | ||||
| Syntax | sprite.read(x, y) |
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| Parameters |
|
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| Returns | int | ||||
| Usage | Application |

