private void RenderRec(SceneObject obj, Matrix4x4 parentMatrix, RenderFrameData frameData)
{
var model = obj.Matrix * parentMatrix;
var color = GetColor(obj, frameData.DefaultColor);
if (obj is IRenderableObj renderableObj)
{
Render(renderableObj, model, frameData, color);
}
if (obj is IScreenRenderable screenRenderable)
{
Render(screenRenderable, model, frameData, color);
}
if (_scene.SelectedObject != null && obj.Id == _scene.SelectedObject.Id)
{
if (obj is IIntersectionRenderableObj intersectionRenderableObj)
{
RenderIntersect(intersectionRenderableObj.IntersectionGetRenderData0(), 0);
RenderIntersect(intersectionRenderableObj.IntersectionGetRenderData1(), 1);
}
}
foreach (var child in obj.Children)
{
RenderRec(child, model, frameData);
}
foreach (var child in obj.HiddenChildren)
{
RenderRec(child, model, frameData);
}
}
private void Render(IRenderableObj obj, Matrix4x4 model, RenderFrameData frameData, Color color)
{
var data = obj.GetRenderData();
var matrix = model * frameData.ViewProjMatrix;
foreach (var vert in data.Vertices)
{
var v = matrix.Multiply(vert.ToVector4());
if (v.Z > 0)
{
DrawVertex(v, color, frameData.AddColors);
}
}
foreach (var edge in data.Edges)
{
var vertA = matrix.Multiply(data.Vertices[edge.IdxA].ToVector4());
var vertB = matrix.Multiply(data.Vertices[edge.IdxB].ToVector4());
if (vertA.Z > 0 && vertB.Z > 0)
{
DrawLine(vertA, vertB, color, frameData.AddColors);
}
}
}
private void Render(Matrix4x4 projMatrix, Color color, bool addColors)
{
var view = GetViewMatrix();
var frameData = new RenderFrameData()
{
AddColors = addColors,
DefaultColor = color,
ViewProjMatrix = view * projMatrix,
};
RenderRec(_scene, Matrix4x4.Identity, frameData);
}
private void Render(IScreenRenderable obj, Matrix4x4 model, RenderFrameData frameData, Color color)
{
var data = obj.GetScreenRenderData();
var cameraCenter = new Vector4(0, 0, 0, 1);
foreach (var pix in data.CameraPixels)
{
DrawOnScren(cameraCenter, pix, color, frameData.AddColors);
}
var matrix = model * frameData.ViewProjMatrix;
var center = matrix.Multiply(new Vector4(0, 0, 0, 1));
if (center.Z > 0)
{
foreach (var pix in data.Pixels)
{
DrawOnScren(center, pix, color, frameData.AddColors);
}
}
}