// Get the transformation matrices at a time
private Frame GetTransformsAtTime(float time)
{
// Calculate the index of the current frame
var frameIndex = (int)(time * Fps) % FrameCount;
var t = ((time * Fps) - frameIndex) % 1;
// Get current and next frame
var frame1 = Frames[frameIndex];
var frame2 = Frames[(frameIndex + 1) % FrameCount];
// Create output frame
var frame = new Frame();
var length = FrameCount / Fps;
// Interpolate bone positions and angles
foreach (var bonePair in frame1.Bones)
{
var position = Vector3.Lerp(frame1.Bones[bonePair.Key].Position, frame2.Bones[bonePair.Key].Position, t);
var angle = Quaternion.Slerp(frame1.Bones[bonePair.Key].Angle, frame2.Bones[bonePair.Key].Angle, t);
frame.Bones[bonePair.Key] = new FrameBone(position, angle);
}
return(frame);
}
public override void Render(float partialTicks)
{
Vector3 partialPos = Vector3.Lerp(LastPos, Pos, partialTicks);
Vector3 partialRot = Vector3.Lerp(_lastRot, _rot, partialTicks);
float partialScale = LastParticleScale + (ParticleScale - LastParticleScale) * partialTicks;
float partialAlpha = LastParticleAlpha + (ParticleAlpha - LastParticleAlpha) * partialTicks;
partialPos.Y += partialScale / 2.0f;
ModelBaked model = ParticleRenderer.ParticleModel;
model.Shader.SetMatrix4("transformationMatrix", MatrixHelper.CreateTransformationMatrix(partialPos, partialRot, partialScale));
model.Shader.SetVector2("UVmin", UVmin);
model.Shader.SetVector2("UVmax", UVmax);
model.Shader.SetFloat("alpha", partialAlpha);
GL.BindTexture(TextureTarget.Texture2D, TextureId);
model.RawModel.Render();
}