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