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main.cpp
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main.cpp
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#include "VoxWriter.h"
#include <cstdint> // int32_t
#include <chrono> // std::chrono
#include <iostream> // std::cout
#define USE_ANIMATED_WAVE
//#define JULIA_REVOLUTE
#ifdef JULIA_REVOLUTE
static double mix(const double& x, const double& y, const double& a) { return x * (1.0 - a) + y * a; }
int main() {
const int32_t SIZE = 375;
const double ZOOM_XZ = 7.5;
const double ZOOM_Y = 7.5;
const int32_t ITERATIONS = 5;
const int32_t FRAMES = 1;
double time = 0.0f;
double kk, hh, px, pz, an, cx, cy, path, rev_x, rev_y, tmp_x, tmp_y, rev_x_squared, rev_y_squared, df;
double rot2D[4] = {1, 0, 0, 1}; // c,-s,s,c for t=0
vox::VoxWriter vox;
vox.SetKeyFrameTimeLoggingFunctor([=](const vox::KeyFrame& vKeyFrame, const double& vValue) { //
std::cout << "Elapsed time for Frame " << vKeyFrame << "/" << FRAMES << " : " << vValue << " secs " << std::endl;
});
vox.StartTimeLogging();
int32_t cube_color;
double time_step = 6.28318 / (double)FRAMES;
for (int32_t f = 0; f < FRAMES; ++f) {
vox.SetKeyFrame(f);
time += time_step;
for (int32_t i = -SIZE; i < SIZE; ++i) {
px = ((double)i * 2.0 / (double)SIZE - 1.0) * ZOOM_XZ;
for (int32_t k = -SIZE; k < SIZE; ++k) {
pz = ((double)k * 2.0 / (double)SIZE - 1.0) * ZOOM_XZ;
an = std::atan2(px, pz);
cx = mix(0.2, -0.5, std::sin(an * 2.0));
cy = mix(0.5, 0.0, std::sin(an * 3.0));
path = sqrt(px * px + pz * pz) - 3.0;
rot2D[0] = std::cos(an + time);
rot2D[1] = -std::sin(an + time);
rot2D[2] = std::sin(an + time);
rot2D[3] = std::cos(an + time);
for (int32_t j = -SIZE; j < SIZE; ++j) {
tmp_y = ((double)j * 2.0 / (double)SIZE - 1.0) * ZOOM_Y;
tmp_x = path;
rev_x = rot2D[0] * tmp_x + rot2D[1] * tmp_y; // rx2d
rev_y = rot2D[2] * tmp_x + rot2D[3] * tmp_y; // ry2d
kk = 1.0;
hh = 1.0;
for (int32_t idx = 0; idx < ITERATIONS; ++idx) {
rev_x_squared = rev_x * rev_x;
rev_y_squared = rev_y * rev_y;
hh *= 4.0 * kk;
kk = rev_x_squared + rev_y_squared;
if (kk > 4.0) {
break;
}
rev_y = 2.0 * rev_x * rev_y + cy;
rev_x = rev_x_squared - rev_y_squared + cx;
}
df = sqrt(kk / hh) * std::log10(kk);
if (std::abs(df) - 0.01 < 0.0) {
cube_color = (int32_t)((std::sin(rev_x + rev_y) * 0.5 + 0.5) * 6.0) + 249;
vox.AddVoxel(i + SIZE, k + SIZE, j + SIZE, cube_color); // magicavoxel use the z as up axis
}
}
}
}
}
vox.StopTimeLogging();
vox.SaveToFile("julia_revolute.vox");
vox.PrintStats();
}
#endif
#ifdef USE_ANIMATED_WAVE
int main() {
const int32_t SIZE = 189;
const int32_t OFFSET = SIZE;
const float Z_SCALE = 1.0f;
const int32_t FRAMES = 30;
const float len_ratio = 1.0f / (SIZE * SIZE);
vox::VoxWriter vox;
vox.SetKeyFrameTimeLoggingFunctor([](const vox::KeyFrame& vKeyFrame, const double& vValue) { //
std::cout << "Elapsed time for Frame " << vKeyFrame << " : " << vValue << " secs" << std::endl;
});
vox.StartTimeLogging();
float time = 0.0f;
for (int32_t k = 0; k < FRAMES; ++k) {
vox.SetKeyFrame(k);
for (int32_t i = -SIZE; i < SIZE; ++i) {
for (int32_t j = -SIZE; j < SIZE; ++j) {
float len = (i * i + j * j) * len_ratio;
int32_t pz = (int32_t)((std::sin(len * 10.0 + time) * 0.5 + 0.5) * (std::abs(50.0f - 25.0f * len)) * Z_SCALE);
int32_t cube_color = (int32_t)(len * 100.0) % 255 + 1;
vox.AddVoxel(i + OFFSET, j + OFFSET, pz, cube_color); // magicavoxel use the z as up axis
}
}
time += 0.5f;
}
vox.StopTimeLogging();
vox.SaveToFile("output_voxwriter.vox");
vox.PrintStats();
}
#endif