public void AddSpotlight(Vector3 position, Vector3 lookat, Vector3 up, float theta, Color color, float near, float far, float daRatioConstant, float daRatioLinear, float daRatioQuadratic, float edgeSpotlightAttenuationPercent = 1.0f / 256.0f)
{
var projCm = MatrixCM.PerspectiveFovRH(theta, 1.0f, near, far);
var viewCm = MatrixCM.ViewLookAtRH(position, lookat, up);
// solve distance attenuation constants: 1/256 = atten = 1 / (x * darc + far * x * darl + far * far * x * darq)
// 256 = x * darc + far * x * darl + far * far * x * darq
// 256 = x * (darc + far * darl + far * far * darq)
var x = 256 / (daRatioConstant + far * daRatioLinear + far * far * daRatioQuadratic);
//Console.WriteLine(x + " " + daRatioConstant + " " + daRatioLinear + " " + daRatioQuadratic);
var direction = lookat - position;
direction.Normalize();
//Console.WriteLine("@8: " + (daRatioConstant * x + daRatioLinear * x * 8 + daRatioQuadratic * x * 8 * 8));
//Console.WriteLine("@far: " + (daRatioConstant * x + daRatioLinear * x * far + daRatioQuadratic * x * far * far));
// solve spotlight attenuation constant.
// edge% = atten_spotlight = dot(spotlightDirectionUnit, objectDirectionUnit) ^ power
// edge% = cos(theta) ^ power
// Math.Log(edge%, cos(theta)) = power
var power = Math.Log(edgeSpotlightAttenuationPercent, Math.Cos(theta));
//Console.WriteLine("Power: " + power);
//Console.WriteLine("@far: " + Math.Pow(Math.Cos(theta), power));
var projViewCm = projCm * viewCm;
AddSpotlight(new SpotlightInfo {
Origin = position,
Direction = direction,
Color = color,
DistanceAttenuationConstant = x * daRatioConstant,
DistanceAttenuationLinear = x * daRatioLinear,
DistanceAttenuationQuadratic = x * daRatioQuadratic,
SpotlightAttenuationPower = (float)power,
ProjViewCM = projViewCm,
});
}
public static void Main(string[] args)
{
var graphicsLoop = GraphicsLoop.CreateWithNewWindow(1280, 720, InitFlags.DisableVerticalSync | InitFlags.EnableDebugStats);
graphicsLoop.Form.Resize += (s, e) => UpdateProjViewMatrix(graphicsLoop.Form.ClientSize);
graphicsLoop.Form.MouseWheel += (s, e) => {
var dir = cameraOffset;
dir.Normalize();
cameraOffset += dir * (-e.Delta / 100.0f);
Console.WriteLine(e.Delta + " " + dir + " " + cameraOffset);
view = MatrixCM.ViewLookAtRH(cameraTarget + cameraOffset, cameraTarget, new Vector3(0, 1, 0));
UpdateProjViewMatrix(graphicsLoop.Form.ClientSize);
};
UpdateProjViewMatrix(graphicsLoop.Form.ClientSize);
//var projViewInv = MatrixCM.Invert(projView);
//projViewInv.Transpose();
//var asdf = Vector4.Transform(new Vector4(0, 0, 1, 1), projViewInv);
//Console.WriteLine(asdf / asdf.W);
//asdf = Vector4.Transform(new Vector4(1, 0, 1, 1), projViewInv);
//Console.WriteLine(asdf / asdf.W);
//asdf = Vector4.Transform(new Vector4(0, 1, 1, 1), projViewInv);
//Console.WriteLine(asdf / asdf.W);
//return;
var floatingCubesBatch = RenderJobBatch.Create(graphicsLoop.Presets.GetPresetMesh(MeshPreset.UnitCube));
//floatingCubesBatch.Wireframe = true;
foreach (var transform in cubeDefaultTransforms)
{
floatingCubesBatch.Jobs.Add(new RenderJobDescription {
WorldTransform = transform,
MaterialProperties = { Metallic = 0.0f, Roughness = 0.0f },
MaterialResourcesIndex = -1,
Color = Color.White
});
}
var gizmos = new GizomisidfojdsTSOmethign(graphicsLoop.Input, graphicsLoop.Presets.UnitSphere, graphicsLoop.Presets.UnitCube);
var scene = new Scene();
for (var frame = 0; graphicsLoop.IsRunning(out var renderer, out var input); frame++)
{
var t = (float)graphicsLoop.Statistics.FrameTime.TotalSeconds;
//scene.SetTime((float)Math.Sin(t * 1));
scene.SetTime((float)t);
var right = Vector3.Cross(-cameraOffset, cameraUp);
right.Normalize();
var forward = -cameraOffset;
forward.Normalize();
var up = Vector3.Cross(right, forward);
if (input.IsMouseDown(MouseButtons.Right))
{
var rotation = Matrix.RotationY(-input.DeltaX * 0.005f) * Matrix.RotationAxis(right, -input.DeltaY * 0.005f);
cameraOffset = (Vector3)Vector3.Transform(cameraOffset, rotation);
}
var v = (input.IsKeyDown(Keys.ShiftKey) ? 7.0f : 1.0f) * 50;
if (input.IsKeyDown(Keys.Left) || input.IsKeyDown(Keys.A))
{
cameraTarget -= right * 0.005f * v;
}
if (input.IsKeyDown(Keys.Right) || input.IsKeyDown(Keys.D))
{
cameraTarget += right * 0.005f * v;
}
if (input.IsKeyDown(Keys.Up) || input.IsKeyDown(Keys.W))
{
cameraTarget += forward * 0.005f * v;
}
if (input.IsKeyDown(Keys.Down) || input.IsKeyDown(Keys.S))
{
cameraTarget -= forward * 0.005f * v;
}
if (input.IsKeyDown(Keys.Space))
{
cameraTarget += cameraUp * 0.005f * (input.IsKeyDown(Keys.ShiftKey) ? -1 : 1);
}
view = MatrixCM.ViewLookAtRH(cameraTarget + cameraOffset, cameraTarget, new Vector3(0, 1, 0));
UpdateProjViewMatrix(graphicsLoop.Form.ClientSize);
scene.Clear();
scene.SetCamera(cameraTarget + cameraOffset, projView);
gizmos.HandleFrameEnter(scene, projView);
// draw pick ray
var viewProj = projView;
viewProj.Transpose();
var ray = Ray.GetPickRay(input.X, input.Y, new ViewportF(0, 0, 1280, 720, 1.0f, 100.0f), viewProj);
var nspheres = 100;
var raySphereBatch = RenderJobBatch.Create(graphicsLoop.Presets.UnitCube);
raySphereBatch.Wireframe = true;
for (var i = 0; i < nspheres; i++)
{
raySphereBatch.Jobs.Add(new RenderJobDescription {
WorldTransform = MatrixCM.Translation(ray.Position + ray.Direction * i / 10.0f) * MatrixCM.Scaling(0.01f),
MaterialProperties = { Metallic = 0.0f, Roughness = 0.0f },
MaterialResourcesIndex = -1,
Color = Color.Black,
});
}
//scene.AddRenderJobBatch(raySphereBatch);
// Draw floor
// scene.AddRenderable(
// graphicsLoop.Presets.UnitCube,
// MatrixCM.Scaling(4f, 0.1f, 4f) * MatrixCM.Translation(0, -0.5f, 0) * MatrixCM.RotationX((float)Math.PI),
// new MaterialDescription { Properties = { Metallic = 0.0f, Roughness = 0.04f } },
// Color.White);
// Draw sun
// scene.AddRenderable(
// graphicsLoop.Presets.UnitSphere,
// MatrixCM.Translation(new Vector3(-10, 3, -3) * 3) * MatrixCM.Scaling(1 * 3),
// new MaterialDescription { Properties = { Metallic = 0.0f, Roughness = 0.04f } },
// Color.Yellow);
// Draw center cube / sphere
scene.AddRenderable(
false ? graphicsLoop.Presets.UnitCube : graphicsLoop.Presets.UnitSphere,
MatrixCM.Translation(1, 0.5f, 0),
new MaterialDescription {
Properties = { Metallic = 0.0f, Roughness = 0.04f }
},
Color.Red);
scene.AddRenderable(
false ? graphicsLoop.Presets.UnitCube : graphicsLoop.Presets.UnitSphere,
MatrixCM.Translation(0, 1.5f, 0),
new MaterialDescription {
Properties = { Metallic = 0.0f, Roughness = 0.04f }
},
Color.Lime);
scene.AddRenderable(
false ? graphicsLoop.Presets.UnitCube : graphicsLoop.Presets.UnitSphere,
MatrixCM.Translation(0, 0.5f, 1),
new MaterialDescription {
Properties = { Metallic = 0.0f, Roughness = 0.04f }
},
Color.Blue);
// Draw floating cubes circling around center cube
floatingCubesBatch.BatchTransform = MatrixCM.RotationY(t * (float)Math.PI / 10.0f);
floatingCubesBatch.MaterialResourcesIndexOverride = scene.AddMaterialResources(new MaterialResourcesDescription {
BaseTexture = graphicsLoop.Presets.SolidCubeTextures[Color.Red, Color.Cyan, Color.Lime, Color.Magenta, Color.Blue, Color.Yellow]
});
if (false)
{
floatingCubesBatch.MaterialResourcesIndexOverride = -1;
for (var i = 0; i < floatingCubesBatch.Jobs.Count; i++)
{
floatingCubesBatch.Jobs.store[i].MaterialResourcesIndex = scene.AddMaterialResources(new MaterialResourcesDescription {
BaseTexture = graphicsLoop.Presets.SolidCubeTextures[new Color4(i / (float)(floatingCubesBatch.Jobs.Count - 1), 0, 0, 1)]
});
}
}
// scene.AddRenderJobBatch(floatingCubesBatch);
// Add spotlights
scene.AddSpotlight(
new Vector3(5, 4, 3), new Vector3(0, 0, 0), Vector3.Up, (float)Math.PI / 8.0f,
Color.White, 100.0f,
0.0f, 6.0f, 3.0f,
0.5f / 256.0f);
scene.AddSpotlight(new Vector3(5, 4, -5), new Vector3(0, 0, 0), Vector3.Up, (float)Math.PI / 8.0f, Color.White, 0.1f, 100.0f, 3.0f, 6.0f, 1.0f);
// Draw the scene
var snapshot = scene.ExportSnapshot();
renderer.RenderScene(snapshot);
snapshot.ReleaseReference();
}
}
