private LineRenderable CreateNormalLines()
{
List<Vector3> points = new List<Vector3>();
List<ColorEx> colors = new List<ColorEx>();
foreach (SubEntity subEntity in loadedModel.SubEntities) {
if (subEntity.IsVisible) {
VertexData vData = subEntity.SubMesh.VertexData;
VertexElement[] elems = new VertexElement[4];
elems[0] = vData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.Position);
elems[1] = vData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.Normal);
elems[2] = vData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.Tangent);
elems[3] = vData.vertexDeclaration.FindElementBySemantic(VertexElementSemantic.Binormal);
HardwareVertexBuffer[] vBuffers = new HardwareVertexBuffer[4];
for (int i = 0; i < 4; ++i) {
if (elems[i] == null)
vBuffers[i] = null;
else
vBuffers[i] = vData.vertexBufferBinding.Bindings[elems[i].Source];
}
Vector3[] positionVectors = ReadBuffer(vBuffers[0], elems[0], vData.vertexCount);
Vector3[] normalVectors = ReadBuffer(vBuffers[1], elems[1], vData.vertexCount);
Vector3[] tangentVectors = ReadBuffer(vBuffers[2], elems[2], vData.vertexCount);
Vector3[] binormalVectors = ReadBuffer(vBuffers[3], elems[3], vData.vertexCount);
for (int i = 0; i < vData.vertexCount; ++i)
BuildAxisLines(points, colors, positionVectors[i],
normalsAxisLength * normalVectors[i],
normalsAxisLength * tangentVectors[i],
normalsAxisLength * binormalVectors[i]);
}
}
if (points.Count == 0)
return null;
LineRenderable lines = new LineRenderable();
lines.SetPoints(points, colors);
lines.MaterialName = "MVLines";
return lines;
}
private LineRenderable CreateBoneLines(Skeleton skeleton)
{
List<Vector3> points = new List<Vector3>();
List<ColorEx> colors = new List<ColorEx>();
List<VertexBoneAssignment> vbas = new List<VertexBoneAssignment>();
int vertexIndex = 0;
VertexBoneAssignment vba;
foreach (Bone bone in skeleton.Bones) {
Matrix4 bindTransform = bone.BindDerivedInverseTransform.Inverse();
Vector3 bonePosition = bindTransform.Translation;
Bone parentBone = null;
if (bone.Parent != null)
parentBone = bone.Parent as Bone;
// If we have a parent bone, draw a line to the parent bone
if (parentBone != null) {
points.Add(parentBone.BindDerivedInverseTransform.Inverse().Translation);
points.Add(bonePosition);
colors.Add(ColorEx.Cyan);
colors.Add(ColorEx.Cyan);
// Set up the vba for the bone base
vba = new VertexBoneAssignment();
vba.vertexIndex = vertexIndex++;
vba.weight = 1.0f;
vba.boneIndex = parentBone.Handle;
vbas.Add(vba);
// Set up the vba for the bone end
vba = new VertexBoneAssignment();
vba.vertexIndex = vertexIndex++;
vba.weight = 1.0f;
vba.boneIndex = bone.Handle;
vbas.Add(vba);
}
// Set up axis lines for this entry
// X axis line
points.Add(bonePosition);
points.Add(bindTransform * (Vector3.UnitX * boneAxisLength));
colors.Add(ColorEx.Red);
colors.Add(ColorEx.Red);
vba = new VertexBoneAssignment();
vba.vertexIndex = vertexIndex++;
vba.weight = 1.0f;
vba.boneIndex = bone.Handle;
vbas.Add(vba);
vba = new VertexBoneAssignment();
vba.vertexIndex = vertexIndex++;
vba.weight = 1.0f;
vba.boneIndex = bone.Handle;
vbas.Add(vba);
// Y axis line
points.Add(bonePosition);
points.Add(bindTransform * (Vector3.UnitY * boneAxisLength));
colors.Add(ColorEx.Blue);
colors.Add(ColorEx.Blue);
vba = new VertexBoneAssignment();
vba.vertexIndex = vertexIndex++;
vba.weight = 1.0f;
vba.boneIndex = bone.Handle;
vbas.Add(vba);
vba = new VertexBoneAssignment();
vba.vertexIndex = vertexIndex++;
vba.weight = 1.0f;
vba.boneIndex = bone.Handle;
vbas.Add(vba);
// Z axis line
points.Add(bonePosition);
points.Add(bindTransform * (Vector3.UnitZ * boneAxisLength));
colors.Add(ColorEx.Lime);
colors.Add(ColorEx.Lime);
vba = new VertexBoneAssignment();
vba.vertexIndex = vertexIndex++;
vba.weight = 1.0f;
vba.boneIndex = bone.Handle;
vbas.Add(vba);
vba = new VertexBoneAssignment();
vba.vertexIndex = vertexIndex++;
vba.weight = 1.0f;
vba.boneIndex = bone.Handle;
vbas.Add(vba);
}
LineRenderable lines = new LineRenderable();
lines.SetPoints(points, colors, vbas);
lines.MaterialName = "MVSkinnedLines";
lines.Skeleton = skeleton;
return lines;
}
private LineRenderable CreateGridLines(float size, int majorDivisions, int minorDivisions)
{
List<Vector3> points = new List<Vector3>();
List<ColorEx> colors = new List<ColorEx>();
ColorEx axisColor = ColorEx.Black;
ColorEx majorColor = ColorEx.DarkGray;
ColorEx minorColor = ColorEx.Gray;
float majorIncrement = size / majorDivisions;
float minorIncrement = size / majorDivisions / minorDivisions;
float x_max = size / 2;
float x_min = -1 * size / 2;
float z_max = size / 2;
float z_min = -1 * size / 2;
for (int i = 0; i < majorDivisions + 1; ++i)
{
for (int j = 0; j < minorDivisions; j++)
{
float x = x_min + i * majorIncrement + j * minorIncrement;
points.Add(new Vector3(x, 0, z_min));
points.Add(new Vector3(x, 0, z_max));
if (j == 0 && x == 0)
{
colors.Add(axisColor);
colors.Add(axisColor);
}
else if (j == 0)
{
colors.Add(majorColor);
colors.Add(majorColor);
}
else
{
colors.Add(minorColor);
colors.Add(minorColor);
}
float z = z_min + i * majorIncrement + j * minorIncrement;
points.Add(new Vector3(x_min, 0, z));
points.Add(new Vector3(x_max, 0, z));
if (j == 0 && z == 0)
{
colors.Add(axisColor);
colors.Add(axisColor);
}
else if (j == 0)
{
colors.Add(majorColor);
colors.Add(majorColor);
}
else
{
colors.Add(minorColor);
colors.Add(minorColor);
}
// On the last set, don't generate more minor lines
if (i == majorDivisions)
break;
}
}
LineRenderable lines = new LineRenderable();
lines.SetPoints(points, colors);
lines.MaterialName = "MVGridLines";
return lines;
}
private LineRenderable CreateAxisLines(bool selected)
{
List<Vector3> points = new List<Vector3>();
List<ColorEx> colors = new List<ColorEx>();
BuildAxisLines(points, colors, Vector3.Zero,
Vector3.UnitX * socketAxisLength,
Vector3.UnitY * socketAxisLength,
Vector3.UnitZ * socketAxisLength);
if (selected)
BuildCubeLines(points, colors, selectBoxSize);
LineRenderable lines = new LineRenderable();
lines.SetPoints(points, colors);
lines.MaterialName = "MVLines";
return lines;
}