public void Setup()
{
// Set camera optics
Gl.glMatrixMode(Gl.GL_PROJECTION);
Gl.glLoadIdentity();
CameraOpticsTechniqueCommonPerspective perspective = this.Optics.TechniqueCommon.Item as CameraOpticsTechniqueCommonPerspective;
if (perspective != null) {
double yFov, aspectRatio, zNear, zFar;
perspective.GetCameraParameters(out yFov, out aspectRatio, out zNear, out zFar);
if (aspectRatio < GlobalSettings.ViewportAspectRatio) {
yFov *= (GlobalSettings.ViewportAspectRatio / aspectRatio);
}
aspectRatio = GlobalSettings.ViewportAspectRatio;
Glu.gluPerspective(yFov, 1 / aspectRatio, zNear, zFar);
}
CameraOpticsTechniqueCommonOrthographic orthographic = this.Optics.TechniqueCommon.Item as CameraOpticsTechniqueCommonOrthographic;
if (orthographic != null) {
double xMag, yMag, zNear, zFar;
orthographic.GetCameraParameters(out xMag, out yMag, out zNear, out zFar);
Gl.glOrtho(-xMag, xMag, -yMag, yMag, zNear, zFar);
}
// Set camera location and orientation
double[] elements = new double[16];
Gl.glGetDoublev(Gl.GL_MODELVIEW_MATRIX, elements);
Math.Matrix modelView = new Math.Matrix(elements);
Math.Vector cameraPosition = modelView.Multiply(Math.Vector.Origin);
Math.Vector targetPosition = modelView.Multiply(new Math.Vector(0, 0, -1, 1));
Math.Vector upDirection = modelView.Multiply(new Math.Vector(0, 1, 0, 0));
Gl.glMatrixMode(Gl.GL_MODELVIEW);
Gl.glLoadIdentity();
Glu.gluLookAt(cameraPosition.X, cameraPosition.Y, cameraPosition.Z,
targetPosition.X, targetPosition.Y, targetPosition.Z,
upDirection.X, upDirection.Y, upDirection.Z);
}
public void Animate()
{
foreach(object item in this.Items) {
Channel channel = item as Channel;
if (channel != null) {
Sampler sampler = Sampler.IDs[channel.Source.Remove(0,1)];
float[] input = null;
float[] output = null;
float[] inTangent = null;
float[] outTangent = null;
string[] interpolation = null;
foreach(InputLocal samplerInput in sampler.Input) {
Source source = Source.IDs[samplerInput.Source.Remove(0,1)];
switch(samplerInput.Semantic) {
case "INPUT": input = ((FloatArray)source.Item).ValuesAsFloats; break;
case "OUTPUT": output = ((FloatArray)source.Item).ValuesAsFloats; break;
case "IN_TANGENT": inTangent = ((FloatArray)source.Item).ValuesAsFloats; break;
case "OUT_TANGENT": outTangent = ((FloatArray)source.Item).ValuesAsFloats; break;
case "INTERPOLATION": interpolation = ((NameArray)source.Item).Values; break;
}
}
float time = (float)GlobalSettings.RunningTime.TotalSeconds;
time = time % input[input.Length - 1];
int index = -1;
for(int i = 0; i < input.Length - 1; i++) {
if (input[i] <= time && time < input[i+1]) {
index = i;
break;
}
}
if (index != -1) {
// Bezier interpolation. See https://collada.org/public_forum/viewtopic.php?t=559
float s = (time - input[index]) / (input[index+1] - input[index]);
Math.Vector S = new Math.Vector(s*s*s, s*s, s, 1);
Math.Matrix M = new Math.Matrix(-1, 3, -3, 1,
3, -6, 3, 0,
-3, 3, 0, 0,
1, 0, 0, 0);
Math.Vector C = new Math.Vector(output[index],
output[index] + outTangent[index] / 3,
output[index+1] - inTangent[index+1] / 3,
output[index+1]);
double interpolatedValue = S * (M * C);
string[] target = channel.Target.Split(new char[] {'/', '.'});
string id = target[0];
string sid = target[1];
string property = target[2];
if (Node.IDs.ContainsKey(id)) {
Node node = Node.IDs[id];
foreach(object transform in node.Items) {
if (transform is Rotate && ((Rotate)transform).Sid == sid) {
double[] values = ((Rotate)transform).Values;
values[3] = interpolatedValue;
((Rotate)transform).Text = "";
foreach(double val in values) {
((Rotate)transform).Text += val.ToString(System.Globalization.CultureInfo.InvariantCulture) + " ";
}
}
}
}
}
}
}
}