martijn/pixdisp
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Add per pixel alpha

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Martijn de Boer 2017-12-28 01:03:01 +01:00
parent 0e5c06006e
commit f9ad39ea01
1 changed files with 10 additions and 6 deletions
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16
drivers/driver.js
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@ -52,12 +52,13 @@ class Driver {
/** /**
* CLear the matrix with the following color, from 0..255 * CLear the matrix with the following color, from 0..255
*/ */
clear( r = 0, g = 0, b = 0) { clear( r = 0, g = 0, b = 0, a = 1 ) {
for ( let x = 0; x < this.width; x++ ) { for ( let x = 0; x < this.width; x++ ) {
for ( let y = 0; y < this.height; y++) { for ( let y = 0; y < this.height; y++) {
this.matrix[x][y].r = r; this.matrix[x][y].r = r;
this.matrix[x][y].g = g; this.matrix[x][y].g = g;
this.matrix[x][y].b = b; this.matrix[x][y].b = b;
this.matrix[x][y].a = a;
} }
} }
} }
@ -65,10 +66,11 @@ class Driver {
/** /**
* Set pixel color * Set pixel color
*/ */
setPixel( x, y, r = 0, g = 0, b = 0 ) { setPixel( x, y, r = 0, g = 0, b = 0, a = 1 ) {
this.matrix[x][y].r = r; this.matrix[x][y].r = r;
this.matrix[x][y].g = g; this.matrix[x][y].g = g;
this.matrix[x][y].b = b; this.matrix[x][y].b = b;
this.matrix[x][y].a = a;
} }
/** /**
@ -79,6 +81,7 @@ class Driver {
r: this.matrix[x][y].r, r: this.matrix[x][y].r,
g: this.matrix[x][y].g, g: this.matrix[x][y].g,
b: this.matrix[x][y].b, b: this.matrix[x][y].b,
a: this.matrix[x][y].a
} }
} }
@ -96,9 +99,9 @@ class Driver {
// @TODO: for now this only supports square displays! // @TODO: for now this only supports square displays!
for ( let y = 0; y < size.height; y++ ) { for ( let y = 0; y < size.height; y++ ) {
for ( let x = 0; x < size.width; x++ ) { for ( let x = 0; x < size.width; x++ ) {
buffer[ y * size.height * 3 + x * 3 + 0 ] = this.matrix[ x ][ y ].r * this.brightness; buffer[ y * size.height * 3 + x * 3 + 0 ] = this.matrix[ x ][ y ].r * this.matrix[ x ][ y ].a * this.brightness;
buffer[ y * size.height * 3 + x * 3 + 1 ] = this.matrix[ x ][ y ].g * this.brightness; buffer[ y * size.height * 3 + x * 3 + 1 ] = this.matrix[ x ][ y ].g * this.matrix[ x ][ y ].a * this.brightness;
buffer[ y * size.height * 3 + x * 3 + 2 ] = this.matrix[ x ][ y ].b * this.brightness; buffer[ y * size.height * 3 + x * 3 + 2 ] = this.matrix[ x ][ y ].b * this.matrix[ x ][ y ].a * this.brightness;
} }
} }
@ -140,7 +143,8 @@ class Driver {
this.matrix[ y ].push( { this.matrix[ y ].push( {
r: 0, r: 0,
g: 0, g: 0,
b: 0 b: 0,
a: 1
} ); } );
} }
} }