private void ProcessMouseEnter(int instanceIndex)
{
MainDXViewportView.Cursor = Cursors.Hand;
// Change the selected instance color to yellow and increase its size by 2
// Get the index of selected instance we need the bounds of hit object
UpdateSelectedInstance(instanceIndex);
// After instance data is changed we need to call Update method
_instancedMeshGeometryVisual3D.Update();
}
private void SelectInstance(int instanceIndex)
{
if (_selectedInstanceIndex == instanceIndex)
{
return; // Already selected
}
if (_selectedInstanceIndex != -1)
{
DeselectInstance();
}
_savedInstanceColor = _instancedMeshGeometryVisual3D.InstancesData[instanceIndex].DiffuseColor;
_instancedMeshGeometryVisual3D.InstancesData[instanceIndex].DiffuseColor = _selectedColor;
_instancedMeshGeometryVisual3D.Update(instanceIndex, 1, updateBounds: false);
_selectedInstanceIndex = instanceIndex;
}
private void ChangeInstanceColor(int instanceIndex, System.Windows.Media.Color color)
{
if (_selectedInstanceIndex == -1)
{
return;
}
_instancedMeshGeometryVisual3D.InstancesData[instanceIndex].DiffuseColor = color.ToColor4();
_instancedMeshGeometryVisual3D.Update(instanceIndex, 1, updateBounds: false);
}
private void ChangeAlphaColor(int startIndex, int count, float newAlpha)
{
var instancedData = _instancedMeshGeometryVisual3D.InstancesData;
int endIndex = startIndex + count;
for (int i = startIndex; i < endIndex; i++)
{
var color = instancedData[i].DiffuseColor;
instancedData[i].DiffuseColor = new Color4(color.Red, color.Green, color.Blue, newAlpha);
}
// When only some instances data are changed, then provide startIndex and count to Update method.
_instancedMeshGeometryVisual3D.Update(startIndex, count, updateBounds: false); // If actual bounds are slightly smaller, then this is not a problem, so preserve the bounds
}
private void ChangeRenderingType()
{
if (MainDXViewportView.DXScene == null)
{
return; // Probably WPF 3D rendering
}
var color = GetColorFromComboBox(SolidModelColorComboBox);
if (_currentRenderingType == RenderingTypes.SolidColorEffect)
{
MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep.OverrideEffect = null;
}
_currentRenderingType = GetCurrentRenderingType();
if (_currentRenderingType == RenderingTypes.SolidColorEffect)
{
_solidColorEffectWithOutline = new Ab3d.DirectX.Effects.SolidColorEffect
{
Color = color.ToColor4(),
OverrideModelColor = true
};
_solidColorEffectWithOutline.InitializeResources(MainDXViewportView.DXScene.DXDevice);
MainDXViewportView.DXScene.DefaultRenderObjectsRenderingStep.OverrideEffect = _solidColorEffectWithOutline;
}
else if (_currentRenderingType == RenderingTypes.UseSingleObjectColor)
{
// Set IsSolidColorMaterial to render tube instances with solid color without any shading based on lighting
_instancedMeshGeometryVisual3D.IsSolidColorMaterial = IsSolidColorMaterialCheckBox.IsChecked ?? false;
var instancesData = _instancedMeshGeometryVisual3D.InstancesData;
int instancesCount = instancesData.Length;
for (var i = 0; i < instancesCount; i++)
{
instancesData[i].DiffuseColor = color.ToColor4();
}
_instancedMeshGeometryVisual3D.Update(0, instancesCount, updateBounds: false);
}
else
{
CreateInstances();
}
}
void ICompositionRenderingSubscriber.OnRendering(EventArgs e)
{
double elapsedSeconds = (DateTime.Now - _startTime).TotalSeconds;
// Update statistics only once per second
if (DateTime.Now.Second != _lastSecond)
{
double averageUpdateTime = _updateDataSamplesCount > 0 ? _totalUpdateDataTime / (double)_updateDataSamplesCount : 0;
double averageRenderTime = _renderingTimeSamplesCount > 0 ? _totalRenderingTime / (double)_renderingTimeSamplesCount : 0;
RenderingStatsTextBlock.Text = string.Format(System.Globalization.CultureInfo.InvariantCulture,
"Update InstanceData time: {0:#,##0.00} ms; DXEngine rendering time: {1:#,##0.00} ms",
averageUpdateTime,
averageRenderTime);
_totalUpdateDataTime = 0;
_updateDataSamplesCount = 0;
_totalRenderingTime = 0;
_renderingTimeSamplesCount = 0;
_framesPerSecond = 0;
_lastSecond = DateTime.Now.Second;
}
else
{
_framesPerSecond++;
}
if (!(RunAnimationCheckBox.IsChecked ?? false))
{
return;
}
double x, y, z;
x = _sphereStartPosition.X;
y = _sphereStartPosition.Y;
z = _sphereStartPosition.Z;
// Rotate on xz plane
x += Math.Sin(elapsedSeconds * 3) * _xSize * 0.1;
z += Math.Cos(elapsedSeconds * 3) * _ySize * 0.1;
// Rotate on xy plane
x += Math.Sin(elapsedSeconds) * _xSize * 0.2;
y += Math.Cos(elapsedSeconds) * 90;
// Rotate on yz plane
y += Math.Sin(elapsedSeconds * 5) * 50;
z += Math.Cos(elapsedSeconds * 0.3) * _ySize * 0.2;
_sphereTranslate.OffsetX = x;
_sphereTranslate.OffsetY = y;
_sphereTranslate.OffsetZ = z;
_spherePosition = new Vector3((float)x, (float)y, (float)z);
// After we have a new sphere position, we can update the instances data
UpdateInstanceData();
_instancedMeshGeometryVisual3D.Update(0, _instanceData.Length, updateBounds: false);
}