public static bool GenerateLinearStairsSubMeshes(ref ChiselBrushContainer brushContainer, ChiselLinearStairsDefinition definition, StairsSideType leftSideDefinition, StairsSideType rightSideDefinition, int subMeshOffset = 0)
{
// TODO: properly assign all materials
if (definition.surfaceDefinition.surfaces.Length != (int)ChiselLinearStairsDefinition.SurfaceSides.TotalSides)
{
return(false);
}
// TODO: implement smooth riser-type
const float kEpsilon = 0.001f;
// TODO: put these values in a shared location since they need to match in multiple locations
var treadHeight = (definition.treadHeight < kEpsilon) ? 0 : definition.treadHeight;
var riserType = (treadHeight == 0 && definition.riserType == StairsRiserType.ThinRiser) ? StairsRiserType.ThickRiser : definition.riserType;
var leftSideType = (riserType == StairsRiserType.None && definition.leftSide == StairsSideType.Up) ? StairsSideType.DownAndUp : leftSideDefinition;
var rightSideType = (riserType == StairsRiserType.None && definition.rightSide == StairsSideType.Up) ? StairsSideType.DownAndUp : rightSideDefinition;
if (riserType == StairsRiserType.Smooth)
{
switch (leftSideType)
{
case StairsSideType.Up: leftSideType = StairsSideType.DownAndUp; break;
case StairsSideType.None: leftSideType = StairsSideType.Down; break;
}
switch (rightSideType)
{
case StairsSideType.Up: rightSideType = StairsSideType.DownAndUp; break;
case StairsSideType.None: rightSideType = StairsSideType.Down; break;
}
}
var boundsMin = definition.bounds.min;
var boundsMax = definition.bounds.max;
if (boundsMin.y > boundsMax.y)
{
var t = boundsMin.y; boundsMin.y = boundsMax.y; boundsMax.y = t;
}
if (boundsMin.x > boundsMax.x)
{
var t = boundsMin.x; boundsMin.x = boundsMax.x; boundsMax.x = t;
}
if (boundsMin.z > boundsMax.z)
{
var t = boundsMin.z; boundsMin.z = boundsMax.z; boundsMax.z = t;
}
var haveRiser = riserType != StairsRiserType.None;
var haveLeftSideDown = riserType != StairsRiserType.FillDown &&
(leftSideType == StairsSideType.Down || leftSideType == StairsSideType.DownAndUp);
var haveLeftSideUp = (leftSideType == StairsSideType.Up || leftSideType == StairsSideType.DownAndUp);
var haveRightSideDown = riserType != StairsRiserType.FillDown &&
(rightSideType == StairsSideType.Down || rightSideType == StairsSideType.DownAndUp);
var haveRightSideUp = (rightSideType == StairsSideType.Up || rightSideType == StairsSideType.DownAndUp);
var sideWidth = definition.sideWidth;
var sideHeight = definition.sideHeight;
var leftSideDepth = (haveLeftSideDown) ? definition.sideDepth : 0;
var rightSideDepth = (haveRightSideDown) ? definition.sideDepth : 0;
var thickRiser = riserType == StairsRiserType.ThickRiser || riserType == StairsRiserType.Smooth;
var riserDepth = (haveRiser && !thickRiser) ? definition.riserDepth : 0;
var stepCount = definition.StepCount;
var offsetZ = (definition.StepDepthOffset < kEpsilon) ? 0 : definition.StepDepthOffset;
var offsetY = definition.plateauHeight;
var nosingDepth = definition.nosingDepth;
var haveTread = (treadHeight >= kEpsilon);
var haveTopSide = (sideHeight > kEpsilon);
var leftNosingWidth = haveLeftSideUp ? -sideWidth : definition.nosingWidth;
var rightNosingWidth = haveRightSideUp ? -sideWidth : definition.nosingWidth;
var leftTopNosingWidth = (haveLeftSideUp && (!haveTopSide)) ? definition.nosingWidth : leftNosingWidth;
var rightTopNosingWidth = (haveRightSideUp && (!haveTopSide)) ? definition.nosingWidth : rightNosingWidth;
var subMeshCount = 0; if (haveRiser)
{
subMeshCount = stepCount;
}
var startTread = subMeshCount; if (haveTread)
{
subMeshCount += stepCount;
}
var startLeftSideDown = subMeshCount; if (haveLeftSideDown)
{
subMeshCount += stepCount;
}
var startRightSideDown = subMeshCount; if (haveRightSideDown)
{
subMeshCount += stepCount;
}
var startLeftSideUp = subMeshCount; if (haveLeftSideUp)
{
subMeshCount += (stepCount - 1) + (haveTopSide ? 1 : 0) + 1; //(haveLeftSideDown ? 0 : 1);
}
var startRightSideUp = subMeshCount; if (haveRightSideUp)
{
subMeshCount += (stepCount - 1) + (haveTopSide ? 1 : 0) + 1; //(haveRightSideDown ? 0 : 1);
}
var stepOffset = new Vector3(0, -definition.stepHeight, definition.stepDepth);
if (stepCount > 0)
{
if (haveRiser)
{
var min = boundsMin;
var max = boundsMax;
max.z = min.z + definition.StepDepthOffset + definition.stepDepth;
if (riserType != StairsRiserType.FillDown)
{
if (riserType == StairsRiserType.ThinRiser)
{
min.z = max.z - riserDepth;
}
else
{
min.z = min.z + definition.StepDepthOffset;
}
if (thickRiser)
{
min.z -= offsetZ;
}
}
min.y = max.y - definition.stepHeight;
min.y -= treadHeight;
max.y -= treadHeight;
min.x += haveRightSideUp ? sideWidth : 0;
max.x -= haveLeftSideUp ? sideWidth : 0;
var extrusion = new Vector3(max.x - min.x, 0, 0);
for (int i = 0; i < stepCount; i++)
{
if (i == 1 &&
thickRiser)
{
min.z += offsetZ;
}
if (i == stepCount - 1)
{
min.y += treadHeight - offsetY;
}
Vector3[] vertices;
if (i == 0 || riserType != StairsRiserType.Smooth)
{
vertices = new[] {
new Vector3(min.x, min.y, min.z), // 0
new Vector3(min.x, min.y, max.z), // 1
new Vector3(min.x, max.y, max.z), // 2
new Vector3(min.x, max.y, min.z), // 3
};
}
else
{
vertices = new[] {
new Vector3(min.x, min.y, min.z), // 0
new Vector3(min.x, min.y, max.z), // 1
new Vector3(min.x, max.y, max.z), // 2
new Vector3(min.x, max.y, min.z - definition.stepDepth), // 3
};
}
BrushMeshFactory.CreateExtrudedSubMesh(ref brushContainer.brushMeshes[subMeshOffset + i], vertices, extrusion,
new int[] { 0, 1, 2, 3, 3, 3 }, // TODO: fix this
definition.surfaceDefinition);
if (riserType != StairsRiserType.FillDown)
{
min.z += definition.stepDepth;
}
max.z += definition.stepDepth;
min.y -= definition.stepHeight;
max.y -= definition.stepHeight;
}
}
if (haveTread)
{
var min = new Vector3(boundsMin.x + sideWidth, boundsMax.y - definition.treadHeight, boundsMin.z);
var max = new Vector3(boundsMax.x - sideWidth, boundsMax.y, boundsMin.z + definition.StepDepthOffset + definition.stepDepth + nosingDepth);
for (int i = 0; i < stepCount; i++)
{
min.x = boundsMin.x - ((i == 0) ? rightTopNosingWidth : rightNosingWidth);
max.x = boundsMax.x + ((i == 0) ? leftTopNosingWidth : leftNosingWidth);
if (i == 1)
{
min.z = max.z - (definition.stepDepth + nosingDepth);
}
var vertices = new[] {
new Vector3(min.x, min.y, min.z), // 0
new Vector3(min.x, min.y, max.z), // 1
new Vector3(min.x, max.y, max.z), // 2
new Vector3(min.x, max.y, min.z), // 3
};
var extrusion = new Vector3(max.x - min.x, 0, 0);
BrushMeshFactory.CreateExtrudedSubMesh(ref brushContainer.brushMeshes[subMeshOffset + startTread + i], vertices, extrusion,
new int[] { 0, 1, 2, 2, 2, 2 }, // TODO: fix this
definition.surfaceDefinition);
min += stepOffset;
max += stepOffset;
}
}
if (haveLeftSideDown)
{
var min = new Vector3(boundsMax.x - sideWidth, boundsMax.y - definition.stepHeight - definition.treadHeight, boundsMin.z + definition.StepDepthOffset);
var max = new Vector3(boundsMax.x, boundsMax.y - definition.treadHeight, boundsMin.z + definition.StepDepthOffset + definition.stepDepth);
var extrusion = new Vector3(sideWidth, 0, 0);
var extraDepth = (thickRiser ? definition.stepDepth : riserDepth) + leftSideDepth;
var maxDepth = boundsMin.z;
GenerateBottomRamp(ref brushContainer, subMeshOffset + startLeftSideDown, stepCount, min, max, extrusion, riserType, definition.stepDepth - riserDepth, extraDepth, maxDepth, definition, definition.surfaceDefinition);
}
if (haveRightSideDown)
{
var min = new Vector3(boundsMin.x, boundsMax.y - definition.stepHeight - definition.treadHeight, boundsMin.z + definition.StepDepthOffset);
var max = new Vector3(boundsMin.x + sideWidth, boundsMax.y - definition.treadHeight, boundsMin.z + definition.StepDepthOffset + definition.stepDepth);
var extrusion = new Vector3(sideWidth, 0, 0);
var extraDepth = (thickRiser ? definition.stepDepth : riserDepth) + rightSideDepth;
var maxDepth = boundsMin.z;
GenerateBottomRamp(ref brushContainer, subMeshOffset + startRightSideDown, stepCount, min, max, extrusion, riserType, definition.stepDepth - riserDepth, extraDepth, maxDepth, definition, definition.surfaceDefinition);
}
if (haveLeftSideUp)
{
var min = new Vector3(boundsMax.x - sideWidth, boundsMax.y - definition.treadHeight - definition.stepHeight, boundsMin.z + definition.StepDepthOffset + definition.stepDepth);
var max = new Vector3(boundsMax.x, boundsMax.y - definition.treadHeight, boundsMin.z + definition.StepDepthOffset + definition.stepDepth + definition.stepDepth);
var extrusion = new Vector3(sideWidth, 0, 0);
var extraDepth = (thickRiser ? definition.stepDepth : riserDepth) + leftSideDepth;
var maxDepth = boundsMin.z;
GenerateTopRamp(ref brushContainer, subMeshOffset + startLeftSideUp, stepCount - 1, min, max, extrusion, sideHeight, extraDepth, maxDepth, riserType, definition, definition.surfaceDefinition);
if (haveTopSide)
{
var vertices = new[] {
new Vector3(min.x, max.y + sideHeight + definition.treadHeight, min.z), // 0
new Vector3(min.x, max.y + sideHeight + definition.treadHeight, boundsMin.z), // 1
new Vector3(min.x, max.y, boundsMin.z), // 2
new Vector3(min.x, max.y, min.z), // 3
};
BrushMeshFactory.CreateExtrudedSubMesh(ref brushContainer.brushMeshes[subMeshOffset + startLeftSideUp + (stepCount - 1)], vertices, extrusion,
new int[] { 0, 1, 2, 3, 3, 3 }, // TODO: fix this
definition.surfaceDefinition);
}
//if (!haveLeftSideDown)
{
var stepHeight = definition.stepHeight;
Vector3[] vertices;
if (riserType == StairsRiserType.FillDown)
{
vertices = new[] {
new Vector3(min.x, boundsMin.y + stepHeight, boundsMax.z), // 0
new Vector3(min.x, boundsMin.y + stepHeight, boundsMin.z), // 1
new Vector3(min.x, boundsMin.y, boundsMin.z), // 2
new Vector3(min.x, boundsMin.y, boundsMax.z), // 3
};
}
else
{
vertices = new[] {
new Vector3(min.x, boundsMin.y + stepHeight, boundsMax.z), // 0
new Vector3(min.x, boundsMin.y + stepHeight, boundsMax.z - extraDepth), // 1
new Vector3(min.x, boundsMin.y, boundsMax.z - extraDepth), // 2
new Vector3(min.x, boundsMin.y, boundsMax.z), // 3
};
}
BrushMeshFactory.CreateExtrudedSubMesh(ref brushContainer.brushMeshes[subMeshOffset + startLeftSideUp + stepCount], vertices, extrusion,
new int[] { 0, 1, 2, 3, 3, 3 }, // TODO: fix this
definition.surfaceDefinition);
}
}
if (haveRightSideUp)
{
var min = new Vector3(boundsMin.x, boundsMax.y - definition.treadHeight - definition.stepHeight, boundsMin.z + definition.StepDepthOffset + definition.stepDepth);
var max = new Vector3(boundsMin.x + sideWidth, boundsMax.y - definition.treadHeight, boundsMin.z + definition.StepDepthOffset + definition.stepDepth + definition.stepDepth);
var extrusion = new Vector3(sideWidth, 0, 0);
var extraDepth = (thickRiser ? definition.stepDepth : riserDepth) + rightSideDepth;
var maxDepth = boundsMin.z;
GenerateTopRamp(ref brushContainer, subMeshOffset + startRightSideUp, stepCount - 1, min, max, extrusion, sideHeight, extraDepth, maxDepth, riserType, definition, definition.surfaceDefinition);
if (haveTopSide)
{
var vertices = new[] {
new Vector3(min.x, max.y + sideHeight + definition.treadHeight, min.z), // 0
new Vector3(min.x, max.y + sideHeight + definition.treadHeight, boundsMin.z), // 1
new Vector3(min.x, max.y, boundsMin.z), // 2
new Vector3(min.x, max.y, min.z), // 3
};
BrushMeshFactory.CreateExtrudedSubMesh(ref brushContainer.brushMeshes[subMeshOffset + startRightSideUp + (stepCount - 1)], vertices, extrusion,
new int[] { 0, 1, 2, 3, 3, 3 }, // TODO: fix this
definition.surfaceDefinition);
}
//if (!haveRightSideDown)
{
var stepHeight = definition.stepHeight;
Vector3[] vertices;
if (riserType == StairsRiserType.FillDown)
{
vertices = new[] {
new Vector3(min.x, boundsMin.y + stepHeight, boundsMax.z), // 0
new Vector3(min.x, boundsMin.y + stepHeight, boundsMin.z), // 1
new Vector3(min.x, boundsMin.y, boundsMin.z), // 2
new Vector3(min.x, boundsMin.y, boundsMax.z), // 3
};
}
else
{
vertices = new[] {
new Vector3(min.x, boundsMin.y + stepHeight, boundsMax.z), // 0
new Vector3(min.x, boundsMin.y + stepHeight, boundsMax.z - extraDepth), // 1
new Vector3(min.x, boundsMin.y, boundsMax.z - extraDepth), // 2
new Vector3(min.x, boundsMin.y, boundsMax.z), // 3
};
}
BrushMeshFactory.CreateExtrudedSubMesh(ref brushContainer.brushMeshes[subMeshOffset + startRightSideUp + stepCount], vertices, extrusion,
new int[] { 0, 1, 2, 3, 3, 3 }, // TODO: fix this
definition.surfaceDefinition);
}
}
}
return(true);
}
// TODO: remove all stairs specific parameters static void GenerateBottomRamp(ref ChiselBrushContainer brushContainer, int startIndex, int stepCount, Vector3 min, Vector3 max, Vector3 extrusion, StairsRiserType riserType, float riserDepth, float extraDepth, float maxDepth, ChiselLinearStairsDefinition definition, in ChiselSurfaceDefinition surfaceDefinition)
public static bool GenerateLinearStairs(ref ChiselBrushContainer brushContainer, ref ChiselLinearStairsDefinition definition)
{
definition.Validate();
int requiredSubMeshCount = BrushMeshFactory.GetLinearStairsSubMeshCount(definition, definition.leftSide, definition.rightSide);
if (requiredSubMeshCount == 0)
{
return(false);
}
int subMeshOffset = 0;
brushContainer.EnsureSize(requiredSubMeshCount);
return(GenerateLinearStairsSubMeshes(ref brushContainer, definition, definition.leftSide, definition.rightSide, subMeshOffset));
}
