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failed try small value before casting to float

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This commit is contained in:
Elon
2019-06-03 10:27:51 -06:00
parent e729c9e812
commit a043ae0c44
2 changed files with 12 additions and 16 deletions
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21
modules/space/rendering/renderablesatellites.cpp
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@@ -614,27 +614,18 @@ void RenderableSatellites::updateBuffers() {
orbit.epoch
);
for (size_t i=0 ; i < nVerticesPerOrbit; ++i) {
size_t index = orbitindex * nVerticesPerOrbit + i;
double timeOffset = orbit.period *
static_cast<double>(i)/ static_cast<double>(_nSegments);
glm::dvec3 position = _keplerTranslator.debrisPos(timeOffset + orbit.epoch);
double positionX = position.x / 10000000; // 10 miljon
double positionY = position.y / 10000000; // 10 miljon
double positionZ = position.z / 10000000; // 10 miljon
LINFO(fmt::format(" real/ :{}", positionX));
LINFO(fmt::format(" float :{}", static_cast<float>(positionX)));
LINFO(fmt::format(" diff :{}", positionX-static_cast<float>(positionX)));
_vertexBufferData[index].x = static_cast<float>(positionX);
_vertexBufferData[index].y = static_cast<float>(positionY);
_vertexBufferData[index].z = static_cast<float>(positionZ);
@@ -643,9 +634,13 @@ void RenderableSatellites::updateBuffers() {
_vertexBufferData[index].period = static_cast<float>(orbit.period);
// The difference in the print below resulted in large differences, up to 0.35.
//LINFO(fmt::format("diff : {} ", position.x - _vertexBufferData[index].x));
// auto utskrift = positionX-(static_cast<float>(positionX) / 10000000);
// LINFO(fmt::format(" vafan!? :{}", utskrift));
// LINFO(fmt::format("diff : {} ", position.x - _vertexBufferData[index].x));
// So one idea was to make it very small before casting it to a float.
// auto print = positionX-(static_cast<float>(positionX) / 10000000);
// LINFO(fmt::format(" smaller distance? :{}", print));
// LINFO(fmt::format(" x-positions float :{}", static_cast<float>(position.x)));
// LINFO(fmt::format(" x-positions float * 10000 :{}", static_cast<float>(position.x * 10000)));
// LINFO(fmt::format(" x-positions float * 10000 /10000 :{}", static_cast<float>(position.x * 10000)/10000));

7
modules/space/shaders/debrisViz_vs.glsl
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@@ -54,9 +54,10 @@ void main() {
* that specific fragment.
*/
float offset = float(orbit_data.x);
float epoch = float(orbit_data.y);
float period = float(orbit_data.z);
// If orbit_data is doubles, cast to float first
float offset = orbit_data.x;
float epoch = orbit_data.y;
float period = orbit_data.z;
// calculate nr of periods, get fractional part to know where
// the vertex closest to the debris part is right now