338 lines
9.8 KiB
C++
338 lines
9.8 KiB
C++
/**
|
||
* Experimental layer class to do play with pixel in an off-screen buffer before painting to the DMA
|
||
*
|
||
* Requires FastLED
|
||
*
|
||
* Faptastic 2020
|
||
**/
|
||
|
||
#include "Layer.h"
|
||
|
||
// For adafruit
|
||
void Layer::drawPixel(int16_t x, int16_t y, uint16_t color) {
|
||
|
||
// 565 color conversion
|
||
uint8_t r = ((((color >> 11) & 0x1F) * 527) + 23) >> 6;
|
||
uint8_t g = ((((color >> 5) & 0x3F) * 259) + 33) >> 6;
|
||
uint8_t b = (((color & 0x1F) * 527) + 23) >> 6;
|
||
|
||
drawPixel(x, y, CRGB(r,g,b));
|
||
}
|
||
|
||
void Layer::drawPixel(int16_t x, int16_t y, int r, int g, int b) {
|
||
drawPixel(x, y, CRGB(r,g,b));
|
||
}
|
||
|
||
void Layer::drawPixel(int16_t x, int16_t y, CRGB color) {
|
||
|
||
if( x >= LAYER_WIDTH || x < 0) return; // 0;
|
||
if( y >= LAYER_HEIGHT || y < 0) return; // 0;
|
||
|
||
pixels->data[y][x] = color;
|
||
//pixel[XY(x,y)] = color;
|
||
}
|
||
|
||
void Layer::dim(byte value) {
|
||
|
||
// nscale8 max value is 255, or it'll flip back to 0
|
||
// (documentation is wrong when it says x/256), it's actually x/255
|
||
for (int y = 0; y < LAYER_HEIGHT; y++) {
|
||
for (int x = 0; x < LAYER_WIDTH; x++) {
|
||
pixels->data[y][x].nscale8(value);
|
||
}}
|
||
// for (int i = 0; i < NUM_PIXELS; i++) pixel[i].nscale8(value);
|
||
|
||
}
|
||
|
||
void Layer::clear() {
|
||
|
||
memset(pixels, BLACK_BACKGROUND_PIXEL_COLOUR, sizeof(layerPixels) );
|
||
}
|
||
|
||
void Layer::display() {
|
||
|
||
CRGB _pixel = 0 ;
|
||
for (int y = 0; y < LAYER_HEIGHT; y++) {
|
||
for (int x = 0; x < LAYER_WIDTH; x++)
|
||
{
|
||
//_pixel = pixel[XY(x, y)];
|
||
_pixel = pixels->data[y][x];
|
||
|
||
matrix->drawPixelRGB888( x, y, _pixel.r, _pixel.g, _pixel.b);
|
||
|
||
/*
|
||
if ( !transparency_enabled ){
|
||
matrix->drawPixelRGB888( x, y, _pixel.r, _pixel.g, _pixel.b);
|
||
} else {
|
||
if (_pixel != transparency_colour) {
|
||
matrix->drawPixelRGB888( x, y, _pixel.r, _pixel.g, _pixel.b);
|
||
}
|
||
}
|
||
*/
|
||
} // end loop to copy fast led to the dma matrix
|
||
}
|
||
|
||
} // display
|
||
|
||
void Layer::overridePixelColor(int r, int g, int b) {
|
||
CRGB _pixel = 0 ;
|
||
for (int y = 0; y < LAYER_HEIGHT; y++) {
|
||
for (int x = 0; x < LAYER_WIDTH; x++)
|
||
{
|
||
//_pixel = pixel[XY(x, y)];
|
||
_pixel = pixels->data[y][x];
|
||
|
||
if (_pixel != transparency_colour) {
|
||
matrix->drawPixelRGB888( x, y, _pixel.r, _pixel.g, _pixel.b);
|
||
}
|
||
|
||
} // end loop to copy fast led to the dma matrix
|
||
}
|
||
}
|
||
|
||
|
||
// default value is in definition
|
||
void Layer::drawCentreText(const char *buf, textPosition textPos, const GFXfont *f, CRGB color, int yadjust)
|
||
{
|
||
int16_t x1, y1;
|
||
uint16_t w, h;
|
||
|
||
setTextWrap(false);
|
||
|
||
if (f) { // Font struct pointer passed in?
|
||
setFont((GFXfont *)f);
|
||
} else { // NULL passed. Current font struct defined?
|
||
setFont(); // use default
|
||
}
|
||
|
||
// getTextBounds isn't correct for variable width fonts
|
||
getTextBounds(buf, 0, 0, &x1, &y1, &w, &h); //calc width of new string
|
||
|
||
//Serial.printf("The width of the text is %d pixels, the height is %d pixels.\n", w,h);
|
||
|
||
/*
|
||
|
||
From: https://learn.adafruit.com/adafruit-gfx-graphics-library/using-fonts
|
||
|
||
For example, whereas the cursor position when printing with the classic font identified
|
||
the top-left corner of the character cell, with new fonts the cursor position indicates the baseline —
|
||
the bottom-most row — of subsequent text. Characters may vary in size and width, and don’t
|
||
necessarily begin at the exact cursor column (as in below, this character starts one pixel
|
||
left of the cursor, but others may be on or to the right of it).
|
||
*/
|
||
|
||
if (!f) {
|
||
if (textPos == TOP) {
|
||
setCursor((LAYER_WIDTH - w) / 2, 0); // top
|
||
} else if (textPos == BOTTOM) {
|
||
setCursor((LAYER_WIDTH - w) / 2, LAYER_HEIGHT - h);
|
||
} else { // middle
|
||
setCursor((LAYER_WIDTH - w) / 2, (LAYER_HEIGHT - h) / 2); // top
|
||
}
|
||
}
|
||
else // custom font
|
||
/* As we can't reliable know what is the actual FIRST and last 'lit' pixel, we need to check what was printed to the layer.*/
|
||
{
|
||
int wstart = 0;
|
||
|
||
if (w > 42) wstart = (LAYER_WIDTH - w) / 2;
|
||
else wstart = (LAYER_WIDTH - w) / 2;
|
||
|
||
if (textPos == TOP) {
|
||
setCursor(wstart, h+yadjust); // top
|
||
} else if (textPos == BOTTOM) {
|
||
setCursor(wstart+1, (LAYER_HEIGHT-1)+yadjust);
|
||
} else { // middle
|
||
setCursor( wstart, ((LAYER_HEIGHT/2) + (h/2)) + yadjust);
|
||
}
|
||
|
||
//Serial.printf("Layer: x1: %d, y1: %d, w: %d, h: %d.\n", x1, y1, w, h);
|
||
}
|
||
|
||
// setCursor(0,16);
|
||
setTextColor(this->color565(color.r, color.g, color.b)); // Need to confirm from FastLed CRGB to adafruit 565
|
||
print(buf);
|
||
|
||
} // end drawCentreText
|
||
|
||
|
||
// Move the contents of the screen left (-ve) or right (+ve)
|
||
void Layer::moveX(int offset)
|
||
{
|
||
if(offset > 0) { // move right
|
||
// Sprintln("Moving right");
|
||
|
||
for(int x = LAYER_WIDTH - 1; x >= 0; x--){ // 63 to 0
|
||
for(int y = 0; y < LAYER_HEIGHT; y++){ // 0 to 31
|
||
if (x - offset >= 0)
|
||
{
|
||
// Serial.printf("setting y %d x %d to y %d x %d\n", y, x, y, x-offset);
|
||
pixels->data[y][x] = pixels->data[y][x-offset];
|
||
}
|
||
else {
|
||
pixels->data[y][x] = BLACK_BACKGROUND_PIXEL_COLOUR;
|
||
}
|
||
}
|
||
}
|
||
} else { // move left
|
||
|
||
// Sprintln("Moving Left");
|
||
for(int x = 0; x <=LAYER_WIDTH - 1; x++){
|
||
for(int y = 0; y < LAYER_HEIGHT; y++){
|
||
if ( x > (LAYER_WIDTH-1)+offset )
|
||
{
|
||
pixels->data[y][x] = BLACK_BACKGROUND_PIXEL_COLOUR;
|
||
//Serial.println("eh?");
|
||
}
|
||
else
|
||
{
|
||
pixels->data[y][x] = pixels->data[y][x-offset];
|
||
// Serial.println("eh?");
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// Find the leftmost and rightmost pixels across all rows. Centre the contents of the layer.
|
||
void Layer::autoCenterX()
|
||
{
|
||
int leftmost_x = 0, rightmost_x = 0, adjusted_leftmost_x = 0;
|
||
|
||
// Find leftmost
|
||
for(int x = 0; x < LAYER_WIDTH; x++) {
|
||
for(int y = 0; y < LAYER_HEIGHT; y++) {
|
||
if (pixels->data[y][x] != BLACK_BACKGROUND_PIXEL_COLOUR)
|
||
{
|
||
leftmost_x = x;
|
||
//Serial.printf("Left most x pixel is %d\n", leftmost_x);
|
||
goto rightmost;
|
||
}
|
||
}
|
||
}
|
||
|
||
rightmost:
|
||
for(int x = LAYER_WIDTH-1; x >= 0; x--) {
|
||
for(int y = 0; y < LAYER_HEIGHT; y++) {
|
||
if (pixels->data[y][x] != BLACK_BACKGROUND_PIXEL_COLOUR)
|
||
{
|
||
rightmost_x = x+1;
|
||
//Serial.printf("Right most x pixel is %d\n", rightmost_x);
|
||
goto centreit;
|
||
}
|
||
}
|
||
}
|
||
|
||
centreit:
|
||
adjusted_leftmost_x = ( LAYER_WIDTH - (rightmost_x - leftmost_x))/2;
|
||
//Serial.printf("Adjusted: %d, Moving x coords by %d pixels.\n", adjusted_leftmost_x, adjusted_leftmost_x-leftmost_x);
|
||
moveX(adjusted_leftmost_x-leftmost_x);
|
||
} // end autoCentreX
|
||
|
||
void Layer::moveY(int delta)
|
||
{
|
||
|
||
}
|
||
|
||
|
||
Layer::~Layer(void)
|
||
{
|
||
free(pixels);
|
||
}
|
||
|
||
|
||
|
||
|
||
/* Merge FastLED layers into a super layer and display. Definition */
|
||
namespace LayerCompositor
|
||
{
|
||
/*
|
||
* Display the foreground pixels if they're not the background/transparent color.
|
||
* If not, then fill with whatever is in the background.
|
||
*
|
||
* writeToBg = write the result back to the _bgLayer, and not directly to the output device!
|
||
* -> no need to do a subsequent bgLayer.display() otherwise.
|
||
*/
|
||
void Stack(RGB64x32MatrixPanel_I2S_DMA &disp, const Layer &_bgLayer, const Layer &_fgLayer, bool writeBackToBg)
|
||
{
|
||
for (int y = 0; y < LAYER_HEIGHT; y++) {
|
||
for (int x = 0; x < LAYER_WIDTH; x++)
|
||
{
|
||
//https://www.educative.io/edpresso/how-to-resolve-the-expression-must-have-class-type-error-in-cpp
|
||
if (_fgLayer.pixels->data[y][x] == _fgLayer.transparency_colour) // foreground is transparent, show the _bgLayer colors
|
||
{
|
||
if (writeBackToBg) // write the foreground to the background layer... perhaps so we can do stuff later with the _fgLayer.
|
||
_bgLayer.pixels->data[y][x] = _bgLayer.pixels->data[y][x];
|
||
else
|
||
disp.drawPixelRGB888(x,y, _bgLayer.pixels->data[y][x].r, _bgLayer.pixels->data[y][x].g, _bgLayer.pixels->data[y][x].b );
|
||
|
||
} // if the foreground is NOT transparent, then print whatever is the bg
|
||
else
|
||
{
|
||
if (writeBackToBg) // write the foreground to the background layer... perhaps so we can do stuff later with the _fgLayer.
|
||
_bgLayer.pixels->data[y][x] = _fgLayer.pixels->data[y][x];
|
||
else
|
||
disp.drawPixelRGB888(x,y, _fgLayer.pixels->data[y][x].r, _fgLayer.pixels->data[y][x].g, _fgLayer.pixels->data[y][x].b );
|
||
}
|
||
|
||
} // end x loop
|
||
} // end y loop
|
||
} // end stack
|
||
|
||
|
||
/*
|
||
* Where the foreground pixels are not the background/transparent color, populate with
|
||
* whatever is in the background.
|
||
*/
|
||
void Siloette(RGB64x32MatrixPanel_I2S_DMA &disp, const Layer &_bgLayer, const Layer &_fgLayer)
|
||
{
|
||
//const Layer *bg = &_bgLayer;
|
||
//const Layer *fg = &_fgLayer;
|
||
|
||
for (int y = 0; y < LAYER_HEIGHT; y++) {
|
||
for (int x = 0; x < LAYER_WIDTH; x++)
|
||
{
|
||
//https://www.educative.io/edpresso/how-to-resolve-the-expression-must-have-class-type-error-in-cpp
|
||
if (_fgLayer.pixels->data[y][x] != _fgLayer.transparency_colour)
|
||
{
|
||
disp.drawPixelRGB888(x,y, _bgLayer.pixels->data[y][x].r, _bgLayer.pixels->data[y][x].g, _bgLayer.pixels->data[y][x].b );
|
||
} // if the foreground is transparent, then print whatever is the bg
|
||
else
|
||
{
|
||
disp.drawPixelRGB888(x,y, 0,0,0);
|
||
}
|
||
|
||
} // end x loop
|
||
} // end y loop
|
||
} // end stack
|
||
|
||
|
||
|
||
|
||
|
||
void Blend(RGB64x32MatrixPanel_I2S_DMA &disp, const Layer &_bgLayer, const Layer &_fgLayer, uint8_t ratio)
|
||
{
|
||
CRGB _pixel = 0 ;
|
||
|
||
for (int y = 0; y < LAYER_HEIGHT; y++)
|
||
{
|
||
for (int x = 0; x < LAYER_WIDTH; x++)
|
||
{
|
||
/*
|
||
// set the blend ratio for the video cross fade
|
||
// (set ratio to 127 for a constant 50% / 50% blend)
|
||
uint8_t ratio = beatsin8(5);
|
||
*/
|
||
|
||
_pixel = blend(_bgLayer.pixels->data[y][x], _fgLayer.pixels->data[y][x], ratio);
|
||
|
||
// https://gist.github.com/StefanPetrick/0c0d54d0f35ea9cca983
|
||
disp.drawPixelRGB888(x,y, _pixel.r, _pixel.g, _pixel.b );
|
||
|
||
} // end x loop
|
||
} // end y loop
|
||
|
||
|
||
|
||
} // end blend
|
||
}
|