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Playing around with values to actually get something not fully opaque

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Martin Opat
2025-01-09 23:42:33 +01:00
parent 09220ced25
commit 7c046a099a
5 changed files with 153 additions and 68 deletions
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26
src/main.cu
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@@ -21,8 +21,8 @@ static float* d_volume = nullptr;
// * very similarly - actual code for loading new data as the simulation progresses - right now its effectively a static image loader
void getTemperature(std::vector<float>& temperatureData, int idx = 0) {
// std::string path = "data/trimmed";
std::string path = "data";
std::string path = "data/trimmed";
// std::string path = "data";
std::string variable = "T";
DataReader dataReader(path, variable);
size_t dataLength = dataReader.fileLength(idx);
@@ -31,8 +31,8 @@ void getTemperature(std::vector<float>& temperatureData, int idx = 0) {
}
void getSpeed(std::vector<float>& speedData, int idx = 0) {
// std::string path = "data/trimmed";
std::string path = "data";
std::string path = "data/trimmed";
// std::string path = "data";
std::string varU = "U";
std::string varV = "V";
@@ -64,23 +64,29 @@ int main() {
// Generate debug volume data
float* hostVolume = new float[VOLUME_WIDTH * VOLUME_HEIGHT * VOLUME_DEPTH];
// generateVolume(hostVolume, VOLUME_WIDTH, VOLUME_HEIGHT, VOLUME_DEPTH);
int inftyCount=0;
for (int i = 0; i < VOLUME_WIDTH * VOLUME_HEIGHT * VOLUME_DEPTH; i++) { // TODO: This is technically an unnecessary artifact of the old code taking in a float* instead of a std::vector
// Discard temperatures above a small star (supposedly, missing temperature values)
hostVolume[i] = data[i + 3*VOLUME_DEPTH*VOLUME_HEIGHT*VOLUME_WIDTH];
if (data[i + 3*VOLUME_DEPTH*VOLUME_HEIGHT*VOLUME_WIDTH] + epsilon >= infty) hostVolume[i] = 0.0f;
if (data[i + 3*VOLUME_DEPTH*VOLUME_HEIGHT*VOLUME_WIDTH] + epsilon >= infty) {hostVolume[i] = -infty; inftyCount++;}
}
std::cout << "inftyCount: " << inftyCount << std::endl;
// Min-max normalization
float minVal = *std::min_element(hostVolume, hostVolume + VOLUME_WIDTH * VOLUME_HEIGHT * VOLUME_DEPTH);
float minVal = *std::min_element(hostVolume, hostVolume + VOLUME_WIDTH * VOLUME_HEIGHT * VOLUME_DEPTH, [](float a, float b) {
if (a <= epsilon) return false;
if (b <= epsilon) return true;
return a < b;
});
float maxVal = *std::max_element(hostVolume, hostVolume + VOLUME_WIDTH * VOLUME_HEIGHT * VOLUME_DEPTH);
std::cout << "minVal: " << minVal << " maxVal: " << maxVal << std::endl;
// Min-max normalization TODO: Decide whether to keep the normalization here but probably not
// Normalize to [0, 1]
// Temperature: min: 0 max: 1 avg: 0.776319 median: 0.790567
// Speed: min: 0 max: 1 avg: 0.132117 median: 0.0837869
for (int i = 0; i < VOLUME_WIDTH * VOLUME_HEIGHT * VOLUME_DEPTH; i++) {
hostVolume[i] = (hostVolume[i] - minVal) / (maxVal - minVal);
}
// for (int i = 0; i < VOLUME_WIDTH * VOLUME_HEIGHT * VOLUME_DEPTH; i++) {
// hostVolume[i] = (hostVolume[i] - minVal) / (maxVal - minVal);
// }
// // print min, max, avg., and median values <--- the code actually does not work when this snippet is enabled so probably TODO: Delete this later
// std::sort(hostVolume, hostVolume + VOLUME_WIDTH * VOLUME_HEIGHT * VOLUME_DEPTH);