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Added fire animation; better transitions

This commit is contained in:
Thomas Kolb 2019-12-05 01:11:37 +01:00
parent 1db57ca62d
commit 368c5bec72
7 changed files with 241 additions and 3 deletions
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1
include/Animation/AllAnimations.h
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@ -2,3 +2,4 @@
#include "ConnectingAnimation.h"
#include "ConnectionEstablishedAnimation.h"
#include "FireAnimation.h"

5
include/Animation/AnimationController.h
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@ -14,6 +14,11 @@ class AnimationController
void restart(void);
bool isIdle(void)
{
return m_animation->finished() && !m_nextAnimation;
}
private:
Fader *m_fader;
std::unique_ptr<Animation> m_animation;

49
include/Animation/FireAnimation.h Normal file
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@ -0,0 +1,49 @@
#pragma once
#include <random>
#include <vector>
#include "Animation.h"
class FireAnimation : public Animation
{
public:
FireAnimation(Fader *fader, bool cold);
void loop(uint64_t frame) override;
void stop(void) override
{
m_stopping = true;
}
void reset(void) override
{
m_stopping = false;
m_running = true;
}
private:
static const constexpr unsigned MAX_NEW_ENERGY = 160;
static const constexpr unsigned RM_ENERGY = 7;
static const constexpr unsigned MAX_PULL_ENERGY_PCT = 100;
std::vector<uint32_t> m_energy;
std::vector<uint32_t> m_energySmooth;
std::vector<int> m_colorMapIndices;
std::vector<Fader::Color> m_colorMapColors;
std::default_random_engine m_gen;
bool m_stopping;
uint32_t m_intensity;
uint8_t interpolate(uint32_t energy, std::size_t start_x, std::size_t end_x, uint8_t start_c, uint8_t end_c);
void colormap(uint32_t energy, Fader::Color *color);
uint32_t idx(uint32_t strip, uint32_t module)
{
return strip * m_fader->modules_per_strip() + module;
}
};

10
include/Fader.h
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@ -25,6 +25,14 @@ class Fader
if(b > 255) { b = 255; } else if (b < 0) { b = 0; };
if(w > 255) { w = 255; } else if (w < 0) { w = 0; };
}
void gamma_correct(void)
{
r = r * r / 255;
g = g * g / 255;
b = b * b / 255;
w = w * w / 255;
}
};
@ -73,4 +81,4 @@ class Fader
std::vector<Color> m_curColor;
std::vector<Color> m_targetColor;
};
};

6
src/Animation/ConnectionEstablishedAnimation.cpp
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@ -37,7 +37,11 @@ void ConnectionEstablishedAnimation::loop(uint64_t frame)
m_fader->fade_color(strip, led, Fader::Color{0,0,0,0});
}
}
} else {
}
m_fader->update();
if(led >= nled) {
// stop the animation if everything is dark
m_running = m_fader->something_changed();
}

165
src/Animation/FireAnimation.cpp Normal file
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@ -0,0 +1,165 @@
#include "Animation/FireAnimation.h"
FireAnimation::FireAnimation(Fader *fader, bool cold)
: Animation(fader),
m_energy(fader->modules_per_strip() * fader->strips()),
m_energySmooth(fader->modules_per_strip() * fader->strips()),
m_stopping(false)
{
m_colorMapIndices.assign({0, 70, 120, 200, 225, 255});
if(cold) {
m_colorMapColors.emplace_back(Fader::Color{ 0, 0, 0, 0});
m_colorMapColors.emplace_back(Fader::Color{ 0, 0, 128, 0});
m_colorMapColors.emplace_back(Fader::Color{ 0, 64, 192, 0});
m_colorMapColors.emplace_back(Fader::Color{ 0, 128, 255, 0});
m_colorMapColors.emplace_back(Fader::Color{ 0, 128, 255, 20});
m_colorMapColors.emplace_back(Fader::Color{ 0, 128, 255, 40});
} else {
m_colorMapColors.emplace_back(Fader::Color{ 0, 0, 0, 0});
m_colorMapColors.emplace_back(Fader::Color{128, 0, 0, 0});
m_colorMapColors.emplace_back(Fader::Color{192, 64, 0, 0});
m_colorMapColors.emplace_back(Fader::Color{255, 128, 0, 0});
m_colorMapColors.emplace_back(Fader::Color{255, 128, 0, 20});
m_colorMapColors.emplace_back(Fader::Color{255, 128, 0, 40});
}
m_fader->set_fadestep(10);
}
uint8_t FireAnimation::interpolate(uint32_t energy, std::size_t start_x, std::size_t end_x, uint8_t start_c, uint8_t end_c)
{
int ien = static_cast<int>(energy);
int isx = static_cast<int>(start_x);
int iex = static_cast<int>(end_x);
int isc = static_cast<int>(start_c);
int iec = static_cast<int>(end_c);
int result = (ien - isx) * 128 / (iex - isx) * (iec - isc) / 128 + isc;
return static_cast<uint8_t>(result);
}
void FireAnimation::colormap(uint32_t energy, Fader::Color *color)
{
std::size_t i = 0;
// find the index on the left side of the interpolation range
while((i < m_colorMapIndices.size()-1) && (m_colorMapIndices[i+1] < energy)) {
i++;
}
// if the index found is the last index of the list, no interpolation is
// possible -> return the last color
if(i >= m_colorMapIndices.size()-1) {
*color = *(m_colorMapColors.end()-1);
return;
}
// interpolate the color map
std::size_t start_idx = m_colorMapIndices[i];
std::size_t end_idx = m_colorMapIndices[i+1];
Fader::Color &start_color = m_colorMapColors[i];
Fader::Color &end_color = m_colorMapColors[i+1];
color->r = interpolate(energy, start_idx, end_idx, start_color.r, end_color.r);
color->g = interpolate(energy, start_idx, end_idx, start_color.g, end_color.g);
color->b = interpolate(energy, start_idx, end_idx, start_color.b, end_color.b);
color->w = interpolate(energy, start_idx, end_idx, start_color.w, end_color.w);
color->gamma_correct();
}
void FireAnimation::loop(uint64_t frame)
{
std::size_t nled = m_fader->modules_per_strip();
std::size_t nstrip = m_fader->strips();
if(!m_stopping && (frame % 10 == 0)) {
std::uniform_int_distribution<uint32_t> m_intensityRNG(MAX_NEW_ENERGY*3/4, MAX_NEW_ENERGY*5/4);
m_intensity = m_intensityRNG(m_gen);
} else if(m_stopping) {
m_intensity = 0;
}
if((frame % 2) == 0) {
// inject random amount of energy in bottom row
std::uniform_int_distribution<uint32_t> m_newEnergyRNG(0, m_intensity);
for(std::size_t strip = 0; strip < nstrip; strip++) {
m_energy[idx(strip, 0)] += m_newEnergyRNG(m_gen);
}
// pull energy from cell below
std::uniform_int_distribution<uint32_t> m_pullEnergyPctRNG(0, MAX_PULL_ENERGY_PCT);
for(std::size_t strip = 0; strip < nstrip; strip++) {
for(std::size_t led = nled-1; led > 0; led--) {
uint32_t &energy = m_energy[idx(strip,led)];
uint32_t &energy_below = m_energy[idx(strip,led-1)];
uint32_t pulled_energy = m_pullEnergyPctRNG(m_gen) * energy_below / 100;
energy += pulled_energy;
energy_below -= pulled_energy;
}
}
// decrease global amount of energy
for(auto &energy: m_energy) {
if(energy >= RM_ENERGY) {
energy -= RM_ENERGY;
} else {
energy = 0;
}
}
// smooth the energy distribution and update the colors
for(std::size_t strip = 0; strip < nstrip; strip++) {
for(std::size_t led = 0; led < nled; led++) {
uint32_t strip_left = (strip + nstrip - 1) % nstrip;
uint32_t strip_right = (strip + nstrip + 1) % nstrip;
int32_t led_above = led + 1;
int32_t led_below = led - 1;
uint32_t &energy_smooth = m_energySmooth[idx(strip, led)];
energy_smooth = 100 * m_energy[idx(strip, led)];
energy_smooth += 30 * m_energy[idx(strip_left, led)];
energy_smooth += 30 * m_energy[idx(strip_right, led)];
uint32_t gain = 160;
if(led_above < nled) {
energy_smooth += 10 * m_energy[idx(strip, led_above)];
gain += 10;
}
if(led_below >= 0) {
energy_smooth += 10 * m_energy[idx(strip, led_below)];
gain += 10;
}
energy_smooth /= gain;
}
}
// update colors
Fader::Color color;
for(std::size_t strip = 0; strip < nstrip; strip++) {
for(std::size_t led = 0; led < nled; led++) {
colormap(m_energySmooth[idx(strip, led)], &color);
m_fader->fade_color(strip, led, color);
}
}
}
m_fader->update();
if(m_stopping && !m_fader->something_changed()) {
m_running = false;
}
}

8
src/main.cpp
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@ -96,6 +96,10 @@ static void ledTask( void * parameter )
animController.loop();
if(animController.isIdle()) {
animController.changeAnimation(std::unique_ptr<Animation>(new FireAnimation(&ledFader, false)));
}
if((WiFi.status() == WL_CONNECTED) || (WiFi.getMode() == WIFI_MODE_AP)) {
udpProto.loop();
}
@ -111,7 +115,9 @@ static void ledTask( void * parameter )
strands[i] = &STRANDS[i];
}
ledFader.update();
if(animController.isIdle()) {
ledFader.update();
}
if(ledFader.something_changed()) {
const std::vector<Fader::Color> &colors = ledFader.get_color_values();