private void CreateMesh(ParticleList particles)
{
SGT_Helper.DestroyObject(generatedMesh);
particleCount = particles.Count;
generatedMesh = new Mesh();
var positions = new Vector3[particleCount * 4];
var indices = new int[particleCount * 6];
var uv0s = new Vector2[particleCount * 4];
var uv1s = new Vector2[particleCount * 4];
var normals = new Vector3[particleCount * 4];
var colours = new Color[particleCount * 4];
for (var i = 0; i < particleCount; i++)
{
var particle = particles[i];
var i0 = i * 6;
var i1 = i0 + 1;
var i2 = i1 + 1;
var i3 = i2 + 1;
var i4 = i3 + 1;
var i5 = i4 + 1;
var v0 = i * 4;
var v1 = v0 + 1;
var v2 = v1 + 1;
var v3 = v2 + 1;
// Index data
indices[i0] = v0;
indices[i1] = v1;
indices[i2] = v2;
indices[i3] = v3;
indices[i4] = v2;
indices[i5] = v1;
var right = SGT_Helper.Rotate(Vector2.right * SGT_Helper.InscribedBox, particle.Angle);
var up = SGT_Helper.Rotate(Vector2.up * SGT_Helper.InscribedBox, particle.Angle);
var uv1 = new Vector2(particle.Size * 0.5f, 0.0f);
// Write star values into vertex data
positions[v0] = particle.Position;
positions[v1] = particle.Position;
positions[v2] = particle.Position;
positions[v3] = particle.Position;
normals[v0] = SGT_Helper.NewVector3(-right + up, 0.0f);
normals[v1] = SGT_Helper.NewVector3(right + up, 0.0f);
normals[v2] = SGT_Helper.NewVector3(-right - up, 0.0f);
normals[v3] = SGT_Helper.NewVector3(right - up, 0.0f);
colours[v0] = particle.Colour;
colours[v1] = particle.Colour;
colours[v2] = particle.Colour;
colours[v3] = particle.Colour;
uv0s[v0] = new Vector2(0.0f, 1.0f);
uv0s[v1] = new Vector2(1.0f, 1.0f);
uv0s[v2] = new Vector2(0.0f, 0.0f);
uv0s[v3] = new Vector2(1.0f, 0.0f);
uv1s[v0] = uv1;
uv1s[v1] = uv1;
uv1s[v2] = uv1;
uv1s[v3] = uv1;
}
generatedMesh.name = "Dust";
generatedMesh.vertices = positions;
generatedMesh.normals = normals;
generatedMesh.colors = colours;
generatedMesh.uv = uv0s;
generatedMesh.uv2 = uv1s;
generatedMesh.triangles = indices;
generatedMesh.bounds = new Bounds(Vector3.zero, new Vector3(100000000.0f, 100000000.0f, 100000000.0f)); // NOTE: using infinity here causes an error
dustMesh.SharedMesh = generatedMesh;
dustMesh.Update();
}
private void CreateMesh(ParticleList particles)
{
SGT_Helper.DestroyObject(generatedMesh);
particleCount = particles.Count;
generatedMesh = new Mesh();
var positions = new Vector3[particleCount * 4];
var indices = new int[particleCount * 6];
var uv0s = new Vector2[particleCount * 4];
var uv1s = new Vector2[particleCount * 4];
var normals = new Vector3[particleCount * 4];
var colours = new Color[particleCount * 4];
var bounds = new Bounds();
for (var i = 0; i < particleCount; i++)
{
var particle = particles[i];
var i0 = i * 6;
var i1 = i0 + 1;
var i2 = i1 + 1;
var i3 = i2 + 1;
var i4 = i3 + 1;
var i5 = i4 + 1;
var v0 = i * 4;
var v1 = v0 + 1;
var v2 = v1 + 1;
var v3 = v2 + 1;
// Index data
indices[i0] = v0;
indices[i1] = v1;
indices[i2] = v2;
indices[i3] = v3;
indices[i4] = v2;
indices[i5] = v1;
var right = SGT_Helper.Rotate(Vector2.right * SGT_Helper.InscribedBox, particle.Angle);
var up = SGT_Helper.Rotate(Vector2.up * SGT_Helper.InscribedBox, particle.Angle);
var uv1 = new Vector2(particle.Size * 0.5f, 0.0f);
bounds.Encapsulate(particle.Position);
// Write star values into vertex data
positions[v0] = particle.Position;
positions[v1] = particle.Position;
positions[v2] = particle.Position;
positions[v3] = particle.Position;
normals[v0] = SGT_Helper.NewVector3(-right + up, 0.0f);
normals[v1] = SGT_Helper.NewVector3(right + up, 0.0f);
normals[v2] = SGT_Helper.NewVector3(-right - up, 0.0f);
normals[v3] = SGT_Helper.NewVector3(right - up, 0.0f);
colours[v0] = particle.Colour;
colours[v1] = particle.Colour;
colours[v2] = particle.Colour;
colours[v3] = particle.Colour;
uv0s[v0] = new Vector2(0.0f, 1.0f);
uv0s[v1] = new Vector2(1.0f, 1.0f);
uv0s[v2] = new Vector2(0.0f, 0.0f);
uv0s[v3] = new Vector2(1.0f, 0.0f);
uv1s[v0] = uv1;
uv1s[v1] = uv1;
uv1s[v2] = uv1;
uv1s[v3] = uv1;
}
bounds.Expand(particleScale);
generatedMesh.hideFlags = HideFlags.DontSave;
generatedMesh.name = "Nebula";
generatedMesh.bounds = bounds;
generatedMesh.vertices = positions;
generatedMesh.normals = normals;
generatedMesh.colors = colours;
generatedMesh.uv = uv0s;
generatedMesh.uv1 = uv1s;
generatedMesh.triangles = indices;
nebulaMesh.SharedMesh = generatedMesh;
nebulaMesh.Update();
}
public void WriteStar(SGT_StarfieldStarData ssd, int starIndex)
{
if (ssd != null)
{
var po = packer.GetOutput(ssd.TextureIndex);
if (po != null)
{
SGT_MeshData meshData;
int vertexIndex;
if (FindStar(starIndex, out meshData, out vertexIndex) == true)
{
var v0 = vertexIndex;
var v1 = v0 + 1;
var v2 = v1 + 1;
var v3 = v2 + 1;
var position = ssd.Position;
var uv1 = new Vector2((ssd.RadiusMin + ssd.RadiusMax) * 0.5f, (ssd.RadiusMax - ssd.RadiusMin) * 0.5f);
var colour = new Color(ssd.RadiusPulseRate, ssd.RadiusPulseOffset, 0.0f, 0.0f);
var right = SGT_Helper.Rotate(Vector2.right * SGT_Helper.InscribedBox, ssd.Angle);
var up = SGT_Helper.Rotate(Vector2.up * SGT_Helper.InscribedBox, ssd.Angle);
if (meshData.Positions[v0] != position)
{
meshData.Positions[v0] = position;
meshData.Positions[v1] = position;
meshData.Positions[v2] = position;
meshData.Positions[v3] = position;
meshData.Modified = true;
}
if (meshData.Normals[v0] != SGT_Helper.NewVector3(-right + up, 0.0f))
{
meshData.Normals[v0] = SGT_Helper.NewVector3(-right + up, 0.0f);
meshData.Normals[v1] = SGT_Helper.NewVector3(right + up, 0.0f);
meshData.Normals[v2] = SGT_Helper.NewVector3(-right - up, 0.0f);
meshData.Normals[v3] = SGT_Helper.NewVector3(right - up, 0.0f);
meshData.Modified = true;
}
if (meshData.Uv0s[v0] != po.UvTopLeft && meshData.Uv0s[v3] != po.UvBottomRight)
{
meshData.Uv0s[v0] = po.UvTopLeft;
meshData.Uv0s[v1] = po.UvTopRight;
meshData.Uv0s[v2] = po.UvBottomLeft;
meshData.Uv0s[v3] = po.UvBottomRight;
meshData.Modified = true;
}
if (meshData.Uv1s[v0] != uv1)
{
meshData.Uv1s[v0] = uv1;
meshData.Uv1s[v1] = uv1;
meshData.Uv1s[v2] = uv1;
meshData.Uv1s[v3] = uv1;
meshData.Modified = true;
}
if (meshData.Colours[v0] != colour)
{
meshData.Colours[v0] = colour;
meshData.Colours[v1] = colour;
meshData.Colours[v2] = colour;
meshData.Colours[v3] = colour;
meshData.Modified = true;
}
}
}
}
}
private Mesh GenerateAsteroidMesh(int asteroidCount)
{
var indices = new int[asteroidCount * 6];
var positions = new Vector3[asteroidCount * 4];
var normals = new Vector3[asteroidCount * 4];
var colours = new Color[asteroidCount * 4];
var uv0s = new Vector2[asteroidCount * 4];
var uv1s = new Vector2[asteroidCount * 4];
var size = (ringRadius + ringWidth + asteroidRadiusMax) * 2.0f;
var bounds = new Bounds(Vector3.zero, new Vector3(size, asteroidRadiusMax * 2.0f, size));
var uvStep = new Vector2(1.0f / (float)asteroidTextureTilesX, 1.0f / (float)asteroidTextureTilesY);
var ringRadiusInner = RingRadiusInner;
var ringRadiusOuter = RingRadiusOuter;
for (var i = 0; i < asteroidCount; i++)
{
// Index data
var indicesIndex = i * 6;
var vertexIndex = i * 4;
indices[indicesIndex + 0] = vertexIndex + 0;
indices[indicesIndex + 1] = vertexIndex + 1;
indices[indicesIndex + 2] = vertexIndex + 2;
indices[indicesIndex + 3] = vertexIndex + 3;
indices[indicesIndex + 4] = vertexIndex + 2;
indices[indicesIndex + 5] = vertexIndex + 1;
// Calculate asteroid values
var radius = Random.Range(asteroidRadiusMin, asteroidRadiusMax);
var radius2 = radius / SGT_Helper.InscribedBox;
var textureCellX = (float)Random.Range(0, asteroidTextureTilesX);
var textureCellY = (float)Random.Range(0, asteroidTextureTilesY);
var uvMin = new Vector2(uvStep.x * textureCellX, uvStep.y * textureCellY);
var uvMax = uvStep + uvMin;
var roll = Random.Range(-Mathf.PI, Mathf.PI);
var right = SGT_Helper.Rotate(Vector2.right * SGT_Helper.InscribedBox, roll);
var up = SGT_Helper.Rotate(Vector2.up * SGT_Helper.InscribedBox, roll);
var angle = Random.Range(-Mathf.PI, Mathf.PI);
var distance01 = GenerateDistance01();
var distance = SGT_Helper.Remap(0.0f, 1.0f, distance01, ringRadiusInner, ringRadiusOuter);
var rps = SGT_Helper.Clamp(Mathf.Lerp(orbitRateInner, orbitRateOuter, distance01) + Random.Range(-orbitRateDeviation, orbitRateDeviation), orbitRateInner, orbitRateOuter);
var height = Random.value;
var spinRate = Random.value;
var position = new Vector3(angle, distance, rps);
var colour = new Color(height, spinRate, 0.0f);
var uv1 = new Vector2(radius, radius2);
// Write star values into vertex data
positions[vertexIndex + 0] = position;
positions[vertexIndex + 1] = position;
positions[vertexIndex + 2] = position;
positions[vertexIndex + 3] = position;
colours[vertexIndex + 0] = colour;
colours[vertexIndex + 1] = colour;
colours[vertexIndex + 2] = colour;
colours[vertexIndex + 3] = colour;
normals[vertexIndex + 0] = SGT_Helper.NewVector3(-right + up, 0.0f);
normals[vertexIndex + 1] = SGT_Helper.NewVector3(right + up, 0.0f);
normals[vertexIndex + 2] = SGT_Helper.NewVector3(-right - up, 0.0f);
normals[vertexIndex + 3] = SGT_Helper.NewVector3(right - up, 0.0f);
uv0s[vertexIndex + 0] = new Vector2(uvMin.x, uvMax.y);
uv0s[vertexIndex + 1] = new Vector2(uvMax.x, uvMax.y);
uv0s[vertexIndex + 2] = new Vector2(uvMin.x, uvMin.y);
uv0s[vertexIndex + 3] = new Vector2(uvMax.x, uvMin.y);
uv1s[vertexIndex + 0] = uv1;
uv1s[vertexIndex + 1] = uv1;
uv1s[vertexIndex + 2] = uv1;
uv1s[vertexIndex + 3] = uv1;
}
var asteroidMesh = new Mesh();
asteroidMesh.hideFlags = HideFlags.DontSave;
asteroidMesh.vertices = positions;
asteroidMesh.triangles = indices;
asteroidMesh.normals = normals;
asteroidMesh.colors = colours;
asteroidMesh.uv = uv0s;
asteroidMesh.uv1 = uv1s;
asteroidMesh.bounds = bounds;
return(asteroidMesh);
}
private Mesh GenerateStarMesh(int starCount)
{
var positions = new Vector3[starCount * 4];
var indices = new int[starCount * 6];
var uv0s = new Vector2[starCount * 4];
var uv1s = new Vector2[starCount * 4];
var normals = new Vector3[starCount * 4];
var colours = new Color[starCount * 4];
var bounds = new Bounds();
var weights = new SGT_WeightedRandom(100);
for (var i = 0; i < StarVariantCount; i++)
{
var ssv = GetStarVariant(i);
weights.Add(i, ssv != null ? ssv.SpawnProbability : 1.0f);
}
for (var i = 0; i < starCount; i++)
{
var i0 = i * 6;
var i1 = i0 + 1;
var i2 = i1 + 1;
var i3 = i2 + 1;
var i4 = i3 + 1;
var i5 = i4 + 1;
var v0 = i * 4;
var v1 = v0 + 1;
var v2 = v1 + 1;
var v3 = v2 + 1;
// Index data
indices[i0] = v0;
indices[i1] = v1;
indices[i2] = v2;
indices[i3] = v3;
indices[i4] = v2;
indices[i5] = v1;
// Calculate star values
var position = GeneratePosition();
var index = weights.RandomIndex;
var po = packer.GetOutput(index);
var ssv = GetStarVariant(index);
float baseRadius, minRadius, maxRadius;
if (ssv != null && ssv.Custom == true)
{
baseRadius = Random.Range(ssv.CustomRadiusMin, ssv.CustomRadiusMax);
minRadius = Mathf.Max(baseRadius - ssv.CustomPulseRadiusMax, ssv.CustomRadiusMin);
maxRadius = Mathf.Min(baseRadius + ssv.CustomPulseRadiusMax, ssv.CustomRadiusMax);
}
else
{
baseRadius = Random.Range(starRadiusMin, starRadiusMax);
minRadius = Mathf.Max(baseRadius - starPulseRadiusMax, starRadiusMin);
maxRadius = Mathf.Min(baseRadius + starPulseRadiusMax, starRadiusMax);
}
var midRadius = (minRadius + maxRadius) * 0.5f;
var pulseRadius = (maxRadius - minRadius) * 0.5f;
var pulseRate = Random.Range(0.0f, 1.0f);
var pulseOffset = Random.Range(0.0f, 1.0f);
var colour = new Color(pulseRate, pulseOffset, 0.0f);
var uv1 = new Vector2(midRadius, pulseRadius);
var rollAngle = Random.Range(-Mathf.PI, Mathf.PI);
var right = SGT_Helper.Rotate(Vector2.right * SGT_Helper.InscribedBox, rollAngle);
var up = SGT_Helper.Rotate(Vector2.up * SGT_Helper.InscribedBox, rollAngle);
bounds.Encapsulate(position);
// Write star values into vertex data
positions[v0] = position;
positions[v1] = position;
positions[v2] = position;
positions[v3] = position;
normals[v0] = SGT_Helper.NewVector3(-right + up, 0.0f);
normals[v1] = SGT_Helper.NewVector3(right + up, 0.0f);
normals[v2] = SGT_Helper.NewVector3(-right - up, 0.0f);
normals[v3] = SGT_Helper.NewVector3(right - up, 0.0f);
colours[v0] = colour;
colours[v1] = colour;
colours[v2] = colour;
colours[v3] = colour;
if (po != null)
{
uv0s[v0] = po.UvTopLeft;
uv0s[v1] = po.UvTopRight;
uv0s[v2] = po.UvBottomLeft;
uv0s[v3] = po.UvBottomRight;
}
uv1s[v0] = uv1;
uv1s[v1] = uv1;
uv1s[v2] = uv1;
uv1s[v3] = uv1;
}
bounds.Expand(starRadiusMax);
var starMesh = new Mesh();
starMesh.name = "Starfield";
starMesh.bounds = bounds;
starMesh.vertices = positions;
starMesh.normals = normals;
starMesh.colors = colours;
starMesh.uv = uv0s;
starMesh.uv2 = uv1s;
starMesh.triangles = indices;
return(starMesh);
}
private Mesh GenerateStarMesh(int starOffset, int starCount)
{
var positions = new Vector3[starCount * 4];
var indices = new int[starCount * 6];
var uv0s = new Vector2[starCount * 4];
var uv1s = new Vector2[starCount * 4];
var normals = new Vector3[starCount * 4];
var colours = new Color[starCount * 4];
var bounds = new Bounds();
for (var i = 0; i < starCount; i++)
{
var i0 = i * 6;
var i1 = i0 + 1;
var i2 = i1 + 1;
var i3 = i2 + 1;
var i4 = i3 + 1;
var i5 = i4 + 1;
var v0 = i * 4;
var v1 = v0 + 1;
var v2 = v1 + 1;
var v3 = v2 + 1;
// Index data
indices[i0] = v0;
indices[i1] = v1;
indices[i2] = v2;
indices[i3] = v3;
indices[i4] = v2;
indices[i5] = v1;
// Calculate star values
var starData = GenerateStar();
var midRadius = (starData.RadiusMin + starData.RadiusMax) * 0.5f;
var pulseRadius = (starData.RadiusMax - starData.RadiusMin) * 0.5f;
var position = starData.Position;
var colour = new Color(starData.RadiusPulseRate, starData.RadiusPulseOffset, 0.0f);
var uv0 = starData.Variant.Coords;
var uv1 = new Vector2(midRadius, pulseRadius);
var right = SGT_Helper.Rotate(Vector2.right * SGT_Helper.InscribedBox, starData.Angle);
var up = SGT_Helper.Rotate(Vector2.up * SGT_Helper.InscribedBox, starData.Angle);
bounds.Encapsulate(position);
// Write star values into vertex data
positions[v0] = position;
positions[v1] = position;
positions[v2] = position;
positions[v3] = position;
normals[v0] = SGT_Helper.NewVector3(-right + up, 0.0f);
normals[v1] = SGT_Helper.NewVector3(right + up, 0.0f);
normals[v2] = SGT_Helper.NewVector3(-right - up, 0.0f);
normals[v3] = SGT_Helper.NewVector3(right - up, 0.0f);
colours[v0] = colour;
colours[v1] = colour;
colours[v2] = colour;
colours[v3] = colour;
uv0s[v0] = uv0[0];
uv0s[v1] = uv0[1];
uv0s[v2] = uv0[2];
uv0s[v3] = uv0[3];
uv1s[v0] = uv1;
uv1s[v1] = uv1;
uv1s[v2] = uv1;
uv1s[v3] = uv1;
}
bounds.Expand(starRadiusMax);
var starMesh = new Mesh();
starMesh.hideFlags = HideFlags.DontSave;
starMesh.name = "Starfield";
starMesh.bounds = bounds;
starMesh.vertices = positions;
starMesh.normals = normals;
starMesh.colors = colours;
starMesh.uv = uv0s;
starMesh.uv1 = uv1s;
starMesh.triangles = indices;
return(starMesh);
}