public static bool GenerateCapsule(ref BrushMesh brushMesh, ref ChiselCapsuleDefinition definition)
{
Vector3[] vertices = null;
if (!BrushMeshFactory.GenerateCapsuleVertices(ref definition, ref vertices))
{
brushMesh.Clear();
return(false);
}
// TODO: share this with GenerateCapsuleVertices
var bottomCap = !definition.haveRoundedBottom;
var topCap = !definition.haveRoundedTop;
var sides = definition.sides;
var segments = definition.segments;
var bottomVertex = definition.bottomVertex;
var topVertex = definition.topVertex;
if (!BrushMeshFactory.GenerateSegmentedSubMesh(ref brushMesh,
sides, segments,
vertices,
topCap, bottomCap,
topVertex, bottomVertex,
definition.surfaceDefinition))
{
brushMesh.Clear();
return(false);
}
return(true);
}
public static bool GenerateCapsule(ref ChiselBrushContainer brushContainer, ref ChiselCapsuleDefinition definition)
{
definition.Validate();
Vector3[] vertices = null;
if (!BrushMeshFactory.GenerateCapsuleVertices(ref definition, ref vertices))
{
return(false);
}
// TODO: share this with GenerateCapsuleVertices
var bottomCap = !definition.haveRoundedBottom;
var topCap = !definition.haveRoundedTop;
var sides = definition.sides;
var segments = definition.segments;
var bottomVertex = definition.bottomVertex;
var topVertex = definition.topVertex;
brushContainer.EnsureSize(1);
return(BrushMeshFactory.GenerateSegmentedSubMesh(ref brushContainer.brushMeshes[0],
sides, segments,
vertices,
topCap, bottomCap,
topVertex, bottomVertex,
definition.surfaceDefinition));
}
static void DrawOutline(IChiselHandleRenderer renderer, ChiselCapsuleDefinition definition, Vector3[] vertices, LineMode lineMode)
{
var sides = definition.sides;
// TODO: share this logic with GenerateCapsuleVertices
var topHemisphere = definition.haveRoundedTop;
var bottomHemisphere = definition.haveRoundedBottom;
var topSegments = topHemisphere ? definition.topSegments : 0;
var bottomSegments = bottomHemisphere ? definition.bottomSegments : 0;
var extraVertices = definition.extraVertexCount;
var bottomVertex = definition.bottomVertex;
var topVertex = definition.topVertex;
var rings = definition.ringCount;
var bottomRing = (bottomHemisphere) ? (rings - bottomSegments) : rings - 1;
var topRing = (topHemisphere) ? (topSegments - 1) : 0;
var prevColor = renderer.color;
var color = prevColor;
color.a *= 0.6f;
for (int i = 0, j = extraVertices; i < rings; i++, j += sides)
{
if ((!definition.haveRoundedTop && i == topRing) ||
(!definition.haveRoundedBottom && i == bottomRing))
{
continue;
}
bool isCapRing = (i == topRing || i == bottomRing);
if (isCapRing)
{
continue;
}
renderer.color = (isCapRing ? prevColor : color);
renderer.DrawLineLoop(vertices, j, sides, lineMode: lineMode, thickness: (isCapRing ? kCapLineThickness : kHorzLineThickness), dashSize: (isCapRing ? 0 : kLineDash));
}
renderer.color = color;
for (int k = 0; k < sides; k++)
{
if (topHemisphere)
{
renderer.DrawLine(vertices[topVertex], vertices[extraVertices + k], lineMode: lineMode, thickness: kVertLineThickness);
}
for (int i = 0, j = extraVertices; i < rings - 1; i++, j += sides)
{
renderer.DrawLine(vertices[j + k], vertices[j + k + sides], lineMode: lineMode, thickness: kVertLineThickness);
}
if (bottomHemisphere)
{
renderer.DrawLine(vertices[bottomVertex], vertices[extraVertices + k + ((rings - 1) * sides)], lineMode: lineMode, thickness: kVertLineThickness);
}
}
renderer.color = prevColor;
}
// possible situations:
// capsule with top AND bottom set to >0 height
// capsule with top OR bottom set to 0 height
// capsule with both top AND bottom set to 0 height
// capsule with height equal to top and bottom height
public static bool GenerateCapsuleVertices(ref ChiselCapsuleDefinition definition, ref Vector3[] vertices)
{
definition.Validate();
var haveTopHemisphere = definition.haveRoundedTop;
var haveBottomHemisphere = definition.haveRoundedBottom;
var haveMiddleCylinder = definition.haveCylinder;
if (!haveBottomHemisphere && !haveTopHemisphere && !haveMiddleCylinder)
{
return(false);
}
var radiusX = definition.diameterX * 0.5f;
var radiusZ = definition.diameterZ * 0.5f;
var topHeight = haveTopHemisphere ? definition.topHeight : 0;
var bottomHeight = haveBottomHemisphere ? definition.bottomHeight : 0;
var totalHeight = definition.height;
var cylinderHeight = definition.cylinderHeight;
var sides = definition.sides;
var extraVertices = definition.extraVertexCount;
var bottomRings = definition.bottomRingCount;
var topRings = definition.topRingCount;
var ringCount = definition.ringCount;
var vertexCount = definition.vertexCount;
var bottomVertex = definition.bottomVertex;
var topVertex = definition.topVertex;
var topOffset = definition.topOffset + definition.offsetY;
var bottomOffset = definition.bottomOffset + definition.offsetY;
if (vertices == null ||
vertices.Length != vertexCount)
{
vertices = new Vector3[vertexCount];
}
if (haveBottomHemisphere)
{
vertices[bottomVertex] = new Vector3(0, 1, 0) * (bottomOffset - bottomHeight); // bottom
}
if (haveTopHemisphere)
{
vertices[topVertex] = new Vector3(0, 1, 0) * (topOffset + topHeight); // top
}
var degreePerSegment = (360.0f / sides) * Mathf.Deg2Rad;
var angleOffset = definition.rotation + (((sides & 1) == 1) ? 0.0f : 0.5f * degreePerSegment);
var topVertexOffset = extraVertices + ((topRings - 1) * sides);
var bottomVertexOffset = extraVertices + ((ringCount - bottomRings) * sides);
var unitCircleOffset = topVertexOffset;
var vertexIndex = unitCircleOffset;
{
for (int h = sides - 1; h >= 0; h--, vertexIndex++)
{
var hRad = (h * degreePerSegment) + angleOffset;
vertices[vertexIndex] = new Vector3(math.cos(hRad) * radiusX,
0.0f,
math.sin(hRad) * radiusZ);
}
}
for (int v = 1; v < topRings; v++)
{
vertexIndex = topVertexOffset - (v * sides);
var segmentFactor = ((v - (topRings * 0.5f)) / topRings) + 0.5f; // [0.0f ... 1.0f]
var segmentDegree = (segmentFactor * 90); // [0 .. 90]
var segmentHeight = topOffset +
(math.sin(segmentDegree * Mathf.Deg2Rad) *
topHeight);
var segmentRadius = math.cos(segmentDegree * Mathf.Deg2Rad); // [0 .. 0.707 .. 1 .. 0.707 .. 0]
for (int h = 0; h < sides; h++, vertexIndex++)
{
vertices[vertexIndex].x = vertices[h + unitCircleOffset].x * segmentRadius;
vertices[vertexIndex].y = segmentHeight;
vertices[vertexIndex].z = vertices[h + unitCircleOffset].z * segmentRadius;
}
}
vertexIndex = bottomVertexOffset;
{
for (int h = 0; h < sides; h++, vertexIndex++)
{
vertices[vertexIndex] = new Vector3(vertices[h + unitCircleOffset].x,
bottomOffset,
vertices[h + unitCircleOffset].z);
}
}
for (int v = 1; v < bottomRings; v++)
{
var segmentFactor = ((v - (bottomRings * 0.5f)) / bottomRings) + 0.5f; // [0.0f ... 1.0f]
var segmentDegree = (segmentFactor * 90); // [0 .. 90]
var segmentHeight = bottomOffset - bottomHeight +
((1 - math.sin(segmentDegree * Mathf.Deg2Rad)) *
bottomHeight);
var segmentRadius = math.cos(segmentDegree * Mathf.Deg2Rad); // [0 .. 0.707 .. 1 .. 0.707 .. 0]
for (int h = 0; h < sides; h++, vertexIndex++)
{
vertices[vertexIndex].x = vertices[h + unitCircleOffset].x * segmentRadius;
vertices[vertexIndex].y = segmentHeight;
vertices[vertexIndex].z = vertices[h + unitCircleOffset].z * segmentRadius;
}
}
{
for (int h = 0; h < sides; h++, vertexIndex++)
{
vertices[h + unitCircleOffset].y = topOffset;
}
}
return(true);
}
