80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
#include "fx_scanner.h"
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#include "effect.h"
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FX_Scanner::FX_Scanner(int numpixels,Adafruit_NeoPixel *strip,uint8_t *height,int startpos,float scannervel,uint32_t scannercolor)
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{
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_numpixels=numpixels;
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_pos = startpos;
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_strip=strip;
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_height=height;
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_vel=scannervel;
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_scannercolor=scannercolor;
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}
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FX_Scanner::FX_Scanner()
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{
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_numpixels=0;
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_pos = -1; //for active false
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_strip=0;
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_height=0;
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_vel=0;
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_scannercolor=0;
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}
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void FX_Scanner::updateRoutine(float updatedelayms)
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{
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_pos+=_vel*updatedelayms/1000.0;
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}
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void FX_Scanner::updateGraphics()
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{
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#define FEATHERDISTANCE 3 //in both directions
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for(int i=0;i<_numpixels;i++){
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float heightdistfromlaser=abs(_height[i]-_pos);
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if (heightdistfromlaser<=FEATHERDISTANCE) {
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uint8_t _r = _scannercolor >> 16;
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uint8_t _g = _scannercolor >> 8;
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uint8_t _b = _scannercolor;
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float distmult=1.0-(heightdistfromlaser/FEATHERDISTANCE);
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_r*=distmult;
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_g*=distmult;
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_b*=distmult;
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uint32_t _pxcolor=_strip->getPixelColor(i); //get current color of that pixel
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uint8_t _pxr = _pxcolor >> 16;
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uint8_t _pxg = _pxcolor >> 8;
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uint8_t _pxb = _pxcolor;
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uint16_t _tmpr=_pxr+_r; //add colors
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uint16_t _tmpg=_pxg+_g;
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uint16_t _tmpb=_pxb+_b;
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_tmpr=constrain(_tmpr,0,255);
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_tmpg=constrain(_tmpg,0,255);
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_tmpb=constrain(_tmpb,0,255);
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_strip->setPixelColor(i,_tmpr,_tmpg,_tmpb); //draw pixel
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}
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}
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}
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bool FX_Scanner::active()
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{
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if (_pos>256 || _pos<0){
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return false;
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}
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return true;
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}
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uint32_t FX_Scanner::Wheel(byte WheelPos,float brightness) {
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WheelPos = 255 - WheelPos;
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if(WheelPos < 85) {
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return _strip->Color(255 - WheelPos * 3*brightness, 0, WheelPos * 3*brightness);
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}
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if(WheelPos < 170) {
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WheelPos -= 85;
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return _strip->Color(0, WheelPos * 3*brightness, 255 - WheelPos * 3*brightness);
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}
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WheelPos -= 170;
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return _strip->Color(WheelPos * 3*brightness, 255 - WheelPos * 3*brightness, 0);
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}
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