// call this to generate the planet texture maps
bool GeneratePlanetTextureMaps(PG_Planet pgPlanet, string filename)
{
// vars for the progress bar
var currentStep = 1;
var totalSteps = 8;
// update the progress bar
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Preparing color map...", (float)currentStep++ / totalSteps);
// prepare the color map
var preparedColorMap = PrepareColorMap(pgPlanet);
if (m_debugMode)
{
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving prepared color map...", 0.0f);
PG_Tools.SaveAsPNG(preparedColorMap, Application.dataPath + "/Exported/Debug - Prepared Color Map.png");
}
// update the progress bar
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Preparing height map...", (float)currentStep++ / totalSteps);
// prepare the height map
var preparedHeightMap = PrepareHeightMap(pgPlanet);
if (m_debugMode)
{
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving prepared height map...", 0.0f);
PG_Tools.SaveAsPNG(preparedHeightMap, Application.dataPath + "/Exported/Debug - Prepared Height Map.png");
}
float minimumDifference = 0.0f;
float maximumDifference = 0.0f;
byte[] differenceBuffer = null;
if (pgPlanet.m_surfaceId != 1)
{
// scale to power of two
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Scaling to power of two...", (float)currentStep++ / totalSteps);
var bicubicScale = new PG_BicubicScaleElevation();
var elevation = bicubicScale.Process(preparedHeightMap, m_textureMapWidth, m_textureMapHeight);
if (m_debugMode)
{
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving bicubic scale map...", 0.0f);
var contourMap = new PG_ContourMap();
var tempBuffer = contourMap.Process(elevation, pgPlanet.m_waterElevation);
PG_Tools.SaveAsEXR(tempBuffer, Application.dataPath + "/Exported/Debug - Bicubic Scale.exr");
}
// craters pass
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Creating craters...", (float)currentStep++ / totalSteps);
if (pgPlanet.m_atmosphericDensityId == 0)
{
var craters = new PG_Craters();
elevation = craters.Process(elevation, pgPlanet.m_id, m_craterGain, pgPlanet.m_waterElevation);
if (m_debugMode)
{
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving craters map...", 0.0f);
var contourMap = new PG_ContourMap();
var tempBuffer = contourMap.Process(elevation, pgPlanet.m_waterElevation);
PG_Tools.SaveAsEXR(tempBuffer, Application.dataPath + "/Exported/Debug - Craters.exr");
}
}
// at this point we want to save the current elevation buffer to use when calculating the difference map later
var baseElevationBuffer = elevation;
// mountains pass
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Creating mountains...", (float)currentStep++ / totalSteps);
if (pgPlanet.m_atmosphericDensityId != 0)
{
var mountains = new PG_Mountains();
elevation = mountains.Process(elevation, pgPlanet.m_id, m_octaves, m_mountainScale, m_mountainLacunarity, m_mountainPersistence, m_mountainGain, pgPlanet.m_waterElevation);
if (m_debugMode)
{
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving mountains map...", 0.0f);
var contourMap = new PG_ContourMap();
var tempBuffer = contourMap.Process(elevation, pgPlanet.m_waterElevation);
PG_Tools.SaveAsEXR(tempBuffer, Application.dataPath + "/Exported/Debug - Mountains.exr");
}
}
// hydraulic erosion pass
var minimumElevation = pgPlanet.m_waterElevation - (pgPlanet.m_waterElevation / 16.0f);
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Hydraulic erosion pass...", (float)currentStep++ / totalSteps);
if (m_doHydraulicErosionPass)
{
if (pgPlanet.m_atmosphericDensityId != 0)
{
var hydraulicErosion = new PG_HydraulicErosion();
var gravityConstant = m_gravityConstant * pgPlanet.m_gravity;
var rainWaterAmount = m_rainWaterAmount * (float)pgPlanet.m_atmosphericDensityId / 3.0f;
elevation = hydraulicErosion.Process(elevation, minimumElevation, m_xyScaleToMeters, m_zScaleToMeters, rainWaterAmount, m_sedimentCapacity, gravityConstant, m_frictionConstant, m_evaporationConstant, m_depositionConstant, m_dissolvingConstant, m_stepDeltaTime, m_finalBlurRadius);
if (elevation == null)
{
return(false);
}
if (m_debugMode)
{
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving hydraulic erosion map...", 0.0f);
var contourMap = new PG_ContourMap();
var tempBuffer = contourMap.Process(elevation, pgPlanet.m_waterElevation);
PG_Tools.SaveAsEXR(tempBuffer, Application.dataPath + "/Exported/Debug - Hydraulic Erosion.exr");
}
}
}
if (m_debugMode)
{
// generate and save the albedo map
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving albedo map...", 0.0f);
var albedoMap = new PG_AlbedoMap();
var albedoBuffer = albedoMap.Process(elevation, preparedColorMap, pgPlanet.m_waterElevation, pgPlanet.m_waterColor, pgPlanet.m_groundColor);
PG_Tools.SaveAsPNG(albedoBuffer, Application.dataPath + "/Exported/Debug - Albedo Map.png");
// generate and save the normal map
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving normal map...", 0.0f);
var normalMap = new PG_NormalMap();
var normalsBuffer = normalMap.Process(elevation, 256.0f, pgPlanet.m_waterElevation, 1);
PG_Tools.SaveAsPNG(normalsBuffer, Application.dataPath + "/Exported/Debug - Normal Map.png");
// generate and save the specular map
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving specular map...", 0.0f);
var waterSpecularColor = new Color(1.0f, 1.0f, 1.0f);
var specularMap = new PG_SpecularMap();
var specularBuffer = specularMap.Process(elevation, albedoBuffer, pgPlanet.m_waterElevation, waterSpecularColor, 0.75f, 1);
PG_Tools.SaveAsPNG(specularBuffer, Application.dataPath + "/Exported/Debug - Specular Map.png", true);
// generate and save the water mask map
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving water mask map...", 0.0f);
var waterMaskMap = new PG_WaterMaskMap();
var waterMaskBuffer = waterMaskMap.Process(elevation, pgPlanet.m_waterElevation, 1);
PG_Tools.SaveAsPNG(waterMaskBuffer, Application.dataPath + "/Exported/Debug - Water Mask Map.png", true);
// generate and save the elevation map (for the terrain grid)
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving elevation map...", 0.0f);
PG_Tools.SaveAsEXR(elevation, Application.dataPath + "/Exported/Debug - Elevation Map.exr");
}
// figure out what our minimum and maximum deltas are
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Computing deltas...", (float)currentStep++ / totalSteps);
minimumDifference = 0;
maximumDifference = 0;
for (var y = 0; y < m_textureMapHeight; y++)
{
for (var x = 0; x < m_textureMapWidth; x++)
{
var difference = elevation[y, x] - baseElevationBuffer[y, x];
if (difference < minimumDifference)
{
minimumDifference = difference;
}
if (difference > maximumDifference)
{
maximumDifference = difference;
}
}
}
// rescale float deltas to 0 to 255
var elevationScale = 255.0f / (maximumDifference - minimumDifference);
differenceBuffer = new byte[m_textureMapWidth * m_textureMapHeight];
for (var y = 0; y < m_textureMapHeight; y++)
{
for (var x = 0; x < m_textureMapWidth; x++)
{
var difference = (byte)Mathf.RoundToInt((elevation[y, x] - baseElevationBuffer[y, x] - minimumDifference) * elevationScale);
differenceBuffer[y * m_textureMapWidth + x] = difference;
elevation[y, x] = difference / 255.0f;
}
}
if (m_debugMode)
{
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Saving difference buffer...", 0.0f);
PG_Tools.SaveAsPNG(elevation, Application.dataPath + "/Exported/" + "Debug - Difference Buffer.png");
AssetDatabase.Refresh();
}
}
// save the map!
EditorUtility.DisplayProgressBar("Planet " + (pgPlanet.m_id + 1), "Compressing and saving the planet data...", (float)currentStep++ / totalSteps);
SavePlanetMap(filename, pgPlanet, preparedHeightMap, preparedColorMap, minimumDifference, maximumDifference, differenceBuffer);
return(true);
}
public void AsyncProcess(byte[] bytes)
{
var progressStepSize = 0.5f / 12.0f;
m_progress += progressStepSize;
// decompress the planet data
using (var memoryStream = new MemoryStream(bytes))
{
using (var gZipStream = new GZipStream(memoryStream, CompressionMode.Decompress, false))
{
var binaryReader = new BinaryReader(gZipStream);
var version = binaryReader.ReadInt32();
if (version != c_versionNumber)
{
m_abort = true;
}
else
{
m_minimumElevation = binaryReader.ReadSingle();
m_waterElevation = binaryReader.ReadSingle();
m_snowElevation = binaryReader.ReadSingle();
var r = binaryReader.ReadSingle();
var g = binaryReader.ReadSingle();
var b = binaryReader.ReadSingle();
m_waterColor = new Color(r, g, b);
r = binaryReader.ReadSingle();
g = binaryReader.ReadSingle();
b = binaryReader.ReadSingle();
m_groundColor = new Color(r, g, b);
r = binaryReader.ReadSingle();
g = binaryReader.ReadSingle();
b = binaryReader.ReadSingle();
m_snowColor = new Color(r, g, b);
var preparedMapWidth = binaryReader.ReadInt32();
var preparedMapHeight = binaryReader.ReadInt32();
m_preparedHeightMap = new float[preparedMapHeight, preparedMapWidth];
for (var y = 0; y < preparedMapHeight; y++)
{
for (var x = 0; x < preparedMapWidth; x++)
{
m_preparedHeightMap[y, x] = binaryReader.ReadSingle();
}
}
m_preparedColorMap = new Color[preparedMapHeight, preparedMapWidth];
for (var y = 0; y < preparedMapHeight; y++)
{
for (var x = 0; x < preparedMapWidth; x++)
{
r = binaryReader.ReadSingle();
g = binaryReader.ReadSingle();
b = binaryReader.ReadSingle();
m_preparedColorMap[y, x] = new Color(r, g, b);
}
}
if (m_planet.IsGasGiant())
{
m_textureMapWidth = c_gasGiantTextureMapWidth;
m_textureMapHeight = c_gasGiantTextureMapHeight;
}
else
{
m_textureMapWidth = c_nonGasGiantTextureMapWidth;
m_textureMapHeight = c_nonGasGiantTextureMapHeight;
m_minimumDifference = binaryReader.ReadSingle();
m_maximumDifference = binaryReader.ReadSingle();
var differenceBufferSize = m_textureMapWidth * m_textureMapHeight;
m_differenceBuffer = new byte[differenceBufferSize];
gZipStream.Read(m_differenceBuffer, 0, differenceBufferSize);
}
}
}
}
// gas giant or not?
if (m_planet.IsGasGiant())
{
// yes - do color bicubic scale
m_progress += progressStepSize;
var bicubicScaleColor = new PG_BicubicScaleColor();
m_albedoMap = bicubicScaleColor.Process(m_preparedColorMap, m_textureMapWidth, m_textureMapHeight);
// do color gaussian blur (this becomes our albedo map)
m_progress += progressStepSize;
var gaussianBlurColor = new PG_GaussianBlurColor();
m_albedoMap = gaussianBlurColor.Process(m_albedoMap, c_xBlurRadiusGasGiant, c_yBlurRadiusGasGiant);
// do elevation bicubic scale
m_progress += progressStepSize;
var bicubicScaleElevation = new PG_BicubicScaleElevation();
m_elevation = bicubicScaleElevation.Process(m_preparedHeightMap, m_textureMapWidth, m_textureMapHeight);
// do elevation gaussian blur
m_progress += progressStepSize;
var gaussianBlurElevation = new PG_GaussianBlurElevation();
m_elevation = gaussianBlurElevation.Process(m_elevation, c_xBlurRadiusGasGiant, c_yBlurRadiusGasGiant);
// build specular map
m_progress += progressStepSize;
m_specularMap = new Color[m_textureMapHeight, m_textureMapWidth];
for (var y = 0; y < m_textureMapHeight; y++)
{
for (var x = 0; x < m_textureMapWidth; x++)
{
var elevation = m_elevation[y, x];
m_specularMap[y, x] = new Color(elevation, elevation, elevation, 0.25f);
}
}
// build water mask map
m_progress += progressStepSize;
m_waterMaskMap = new Color[4, 4];
for (var y = 0; y < 4; y++)
{
for (var x = 0; x < 4; x++)
{
m_waterMaskMap[y, x] = Color.black;
}
}
// build normal map
m_progress += progressStepSize;
m_normalMap = new Color[4, 4];
var defaultNormal = new Color(0.5f, 0.5f, 1.0f);
for (var y = 0; y < 4; y++)
{
for (var x = 0; x < 4; x++)
{
m_normalMap[y, x] = defaultNormal;
}
}
}
else
{
// do elevation bicubic scale
m_progress += progressStepSize;
var bicubicScaleElevation = new PG_BicubicScaleElevation();
m_elevation = bicubicScaleElevation.Process(m_preparedHeightMap, m_textureMapWidth, m_textureMapHeight);
// do craters
m_progress += progressStepSize;
if (m_planet.m_atmosphereDensityId == 0)
{
var craters = new PG_Craters();
m_elevation = craters.Process(m_elevation, m_planet.m_id, 0.1f, m_waterElevation);
}
// factor in elevation difference map
m_progress += progressStepSize;
m_maximumElevation = 0.0f;
var elevationScale = (m_maximumDifference - m_minimumDifference) / 255.0f;
for (var y = 0; y < m_textureMapHeight; y++)
{
for (var x = 0; x < m_textureMapWidth; x++)
{
var difference = m_differenceBuffer[y * m_textureMapWidth + x];
m_elevation[y, x] += (difference * elevationScale) + m_minimumDifference;
m_maximumElevation = Mathf.Max(m_maximumElevation, m_elevation[y, x]);
}
}
// build albedo map
m_progress += progressStepSize;
var albedoMap = new PG_AlbedoMap();
m_albedoMap = albedoMap.Process(m_elevation, m_preparedColorMap, m_waterElevation, m_waterColor, m_groundColor);
// build specular map
m_progress += progressStepSize;
var waterSpecularColor = m_planet.IsMolten() ? new Color(0.75f, 0.125f, 0.125f) : new Color(1.0f, 1.0f, 1.0f);
var waterSpecularPower = m_planet.IsMolten() ? 0.4f : 0.75f;
var specularMap = new PG_SpecularMap();
m_specularMap = specularMap.Process(m_elevation, m_albedoMap, m_waterElevation, waterSpecularColor, waterSpecularPower, 4);
// build water mask map
m_progress += progressStepSize;
var waterMaskMap = new PG_WaterMaskMap();
m_waterMaskMap = waterMaskMap.Process(m_elevation, m_waterElevation, 4);
// build normal map
m_progress += progressStepSize;
var normalMap = new PG_NormalMap();
m_normalMap = normalMap.Process(m_elevation, c_normalScale, m_waterElevation, 2);
}
// get albedo pixels
m_progress += progressStepSize;
m_albedoPixels = new Color[m_textureMapWidth * m_textureMapHeight];
var index = 0;
for (var y = 0; y < m_textureMapHeight; y++)
{
for (var x = 0; x < m_textureMapWidth; x++)
{
m_albedoPixels[index++] = m_albedoMap[y, x];
}
}
// get specular pixels
m_progress += progressStepSize;
var textureMapWidth = m_specularMap.GetLength(1);
var textureMapHeight = m_specularMap.GetLength(0);
m_specularPixels = new Color[textureMapWidth * textureMapHeight];
index = 0;
for (var y = 0; y < textureMapHeight; y++)
{
for (var x = 0; x < textureMapWidth; x++)
{
m_specularPixels[index++] = m_specularMap[y, x];
}
}
// get water mask pixels
m_progress += progressStepSize;
textureMapWidth = m_waterMaskMap.GetLength(1);
textureMapHeight = m_waterMaskMap.GetLength(0);
m_waterMaskPixels = new Color[textureMapWidth * textureMapHeight];
index = 0;
for (var y = 0; y < textureMapHeight; y++)
{
for (var x = 0; x < textureMapWidth; x++)
{
m_waterMaskPixels[index++] = m_waterMaskMap[y, x];
}
}
// get normal pixels
m_progress += progressStepSize;
textureMapWidth = m_normalMap.GetLength(1);
textureMapHeight = m_normalMap.GetLength(0);
m_normalPixels = new Color[textureMapWidth * textureMapHeight];
index = 0;
for (var y = 0; y < textureMapHeight; y++)
{
for (var x = 0; x < textureMapWidth; x++)
{
m_normalPixels[index++] = new Color(0.0f, m_normalMap[y, x].g, 0.0f, m_normalMap[y, x].r);
}
}
m_step = 20;
}
