public static void RenderAabb(this WorldView world, AxisAlignedBoundingBox bounds, Matrix4X4 matrix, Color color, double lineWidth = 1, double extendLineLength = 0)
{
GLHelper.PrepareFor3DLineRender(true);
Frustum frustum = world.GetClippingFrustum();
for (int i = 0; i < 4; i++)
{
Vector3 sideStartPosition = Vector3Ex.Transform(bounds.GetBottomCorner(i), matrix);
Vector3 sideEndPosition = Vector3Ex.Transform(bounds.GetTopCorner(i), matrix);
Vector3 bottomStartPosition = sideStartPosition;
Vector3 bottomEndPosition = Vector3Ex.Transform(bounds.GetBottomCorner((i + 1) % 4), matrix);
Vector3 topStartPosition = sideEndPosition;
Vector3 topEndPosition = Vector3Ex.Transform(bounds.GetTopCorner((i + 1) % 4), matrix);
if (extendLineLength > 0)
{
GLHelper.ExtendLineEnds(ref sideStartPosition, ref sideEndPosition, extendLineLength);
GLHelper.ExtendLineEnds(ref topStartPosition, ref topEndPosition, extendLineLength);
GLHelper.ExtendLineEnds(ref bottomStartPosition, ref bottomEndPosition, extendLineLength);
}
// draw each of the edge lines (4) and their touching top and bottom lines (2 each)
world.Render3DLineNoPrep(frustum, sideStartPosition, sideEndPosition, color, lineWidth);
world.Render3DLineNoPrep(frustum, topStartPosition, topEndPosition, color, lineWidth);
world.Render3DLineNoPrep(frustum, bottomStartPosition, bottomEndPosition, color, lineWidth);
}
GL.Enable(EnableCap.Lighting);
}
public static void RenderCylinderOutline(this WorldView world, Matrix4X4 worldMatrix, Vector3 center, double diameter, double height, int sides, Color topBottomRingColor, Color sideLinesColor, double lineWidth = 1, double extendLineLength = 0, double phase = 0)
{
GLHelper.PrepareFor3DLineRender(true);
Frustum frustum = world.GetClippingFrustum();
for (int i = 0; i < sides; i++)
{
var startAngle = MathHelper.Tau * i / sides + phase;
var rotatedPoint = new Vector3(Math.Cos(startAngle), Math.Sin(startAngle), 0) * diameter / 2;
var sideTop = Vector3Ex.Transform(center + rotatedPoint + new Vector3(0, 0, height / 2), worldMatrix);
var sideBottom = Vector3Ex.Transform(center + rotatedPoint + new Vector3(0, 0, -height / 2), worldMatrix);
var endAngle = MathHelper.Tau * (i + 1) / sides + phase;
var rotated2Point = new Vector3(Math.Cos(endAngle), Math.Sin(endAngle), 0) * diameter / 2;
var topStart = sideTop;
var topEnd = Vector3Ex.Transform(center + rotated2Point + new Vector3(0, 0, height / 2), worldMatrix);
var bottomStart = sideBottom;
var bottomEnd = Vector3Ex.Transform(center + rotated2Point + new Vector3(0, 0, -height / 2), worldMatrix);
if (extendLineLength > 0)
{
GLHelper.ExtendLineEnds(ref sideTop, ref sideBottom, extendLineLength);
}
if (sideLinesColor != Color.Transparent)
{
world.Render3DLineNoPrep(frustum, sideTop, sideBottom, sideLinesColor, lineWidth);
}
if (topBottomRingColor != Color.Transparent)
{
world.Render3DLineNoPrep(frustum, topStart, topEnd, topBottomRingColor, lineWidth);
world.Render3DLineNoPrep(frustum, bottomStart, bottomEnd, topBottomRingColor, lineWidth);
}
}
}
