ESP32-HUB75-MatrixPanel-DMA/examples/AuroraDemo/PatternSpiral.h

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2019-05-11 16:20:53 +02:00
/*
* Portions of this code are adapted from "Funky Clouds" by Stefan Petrick:
* https://gist.github.com/anonymous/876f908333cd95315c35
*
* Copyright (c) 2014 Stefan Petrick
* http://www.stefan-petrick.de/wordpress_beta
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef PatternSpiral_H
#define PatternSpiral_H
class PatternSpiral : public Drawable {
private:
// Timer stuff (Oszillators)
struct timer {
unsigned long takt;
unsigned long lastMillis;
unsigned long count;
int delta;
byte up;
byte down;
};
timer multiTimer[5];
int timers = sizeof(multiTimer) / sizeof(multiTimer[0]);
// counts all variables with different speeds linear up and down
void UpdateTimers()
{
unsigned long now = millis();
for (int i = 0; i < timers; i++)
{
while (now - multiTimer[i].lastMillis >= multiTimer[i].takt)
{
multiTimer[i].lastMillis += multiTimer[i].takt;
multiTimer[i].count = multiTimer[i].count + multiTimer[i].delta;
if ((multiTimer[i].count == multiTimer[i].up) || (multiTimer[i].count == multiTimer[i].down))
{
multiTimer[i].delta = -multiTimer[i].delta;
}
}
}
}
public:
PatternSpiral() {
name = (char *)"Spiral";
}
void start() {
// set all counting directions positive for the beginning
for (int i = 0; i < timers; i++) multiTimer[i].delta = 1;
// set range (up/down), speed (takt=ms between steps) and starting point of all oszillators
unsigned long now = millis();
multiTimer[0].lastMillis = now;
multiTimer[0].takt = 42; //x1
multiTimer[0].up = MATRIX_WIDTH - 1;
multiTimer[0].down = 0;
multiTimer[0].count = 0;
multiTimer[1].lastMillis = now;
multiTimer[1].takt = 55; //y1
multiTimer[1].up = MATRIX_HEIGHT - 1;
multiTimer[1].down = 0;
multiTimer[1].count = 0;
multiTimer[2].lastMillis = now;
multiTimer[2].takt = 3; //color
multiTimer[2].up = 255;
multiTimer[2].down = 0;
multiTimer[2].count = 0;
multiTimer[3].lastMillis = now;
multiTimer[3].takt = 71; //x2
multiTimer[3].up = MATRIX_WIDTH - 1;
multiTimer[3].down = 0;
multiTimer[3].count = 0;
multiTimer[4].lastMillis = now;
multiTimer[4].takt = 89; //y2
multiTimer[4].up = MATRIX_HEIGHT - 1;
multiTimer[4].down = 0;
multiTimer[4].count = 0;
}
unsigned int drawFrame() {
// manage the Oszillators
UpdateTimers();
// draw just a line defined by 5 oszillators
effects.BresenhamLine(
multiTimer[3].count, // x1
multiTimer[4].count, // y1
multiTimer[0].count, // x2
multiTimer[1].count, // y2
multiTimer[2].count); // color
// manipulate the screen buffer
// with fixed parameters (could be oszillators too)
// Params: center x, y, radius, scale color down
// --> NOTE: Affects always a SQUARE with an odd length
// effects.SpiralStream(15, 15, 10, 128);
effects.SpiralStream(31, 15, 64, 128); // for 64 pixel wide matrix!
// effects.SpiralStream(47, 15, 10, 128); // for 64 pixel wide matrix!
// why not several times?!
// effects.SpiralStream(16, 6, 6, 128);
// effects.SpiralStream(10, 24, 10, 128);
// increase the contrast
effects.DimAll(250); effects.ShowFrame();
return 0;
}
};
#endif