public void Update(ITimer timer)
{
float t = timer == null ? 0.0f : (float)timer.TotalSeconds;
this.worldMatrix1 = XMMatrix.RotationY(t);
XMMatrix spin = XMMatrix.RotationZ(-t);
XMMatrix orbit = XMMatrix.RotationY(-t * 2.0f);
XMMatrix translate = XMMatrix.Translation(-4.0f, 0.0f, 0.0f);
XMMatrix scale = XMMatrix.Scaling(0.3f, 0.3f, 0.3f);
this.worldMatrix2 = scale * spin * translate * orbit;
}
static void Transform(XMMatrix target, Viewport viewport, float angle, float scale, float w, float h)
{
using var r = new XMMatrix();
using var b = new XMMatrix();
using var s = new XMMatrix();
using var t = new XMMatrix();
r.RotationZ((float)(angle / 180 * Math.PI));
s.Scaling(scale, scale, 1.0f);
t.Translation(viewport.Width / 2 - w * scale / 2, viewport.Height / 2 - h * scale / 2, 0.0f);
b.Translation(-viewport.Width / 2, -viewport.Height / 2, 0.0f);
b.Multiply(r);
r.Set(b);
b.Identity();
b.Translation(viewport.Width / 2, viewport.Height / 2, 0.0f);
r.Multiply(b);
s.Multiply(t);
s.Multiply(r);
target.Set(s);
}
public void Render()
{
var context = this.deviceResources.D3DContext;
context.OutputMergerSetRenderTargets(new[] { this.deviceResources.D3DRenderTargetView }, this.deviceResources.D3DDepthStencilView);
context.ClearRenderTargetView(this.deviceResources.D3DRenderTargetView, new float[] { 0.0f, 0.125f, 0.3f, 1.0f });
context.ClearDepthStencilView(this.deviceResources.D3DDepthStencilView, D3D11ClearOptions.Depth, 1.0f, 0);
context.InputAssemblerSetInputLayout(this.inputLayout);
context.InputAssemblerSetVertexBuffers(
0,
new[] { this.vertexBuffer },
new uint[] { SimpleVertex.Size },
new uint[] { 0 });
context.InputAssemblerSetIndexBuffer(this.indexBuffer, DxgiFormat.R16UInt, 0);
context.InputAssemblerSetPrimitiveTopology(D3D11PrimitiveTopology.TriangleList);
// Update matrix variables and lighting variables
ConstantBufferData cb;
cb.World = this.worldMatrix.Transpose();
cb.View = this.viewMatrix.Transpose();
cb.Projection = this.projectionMatrix.Transpose();
cb.LightDir = new XMFloat4[2];
cb.LightColor = new XMFloat4[2];
for (int i = 0; i < 2; i++)
{
cb.LightDir[i] = this.lightDirs[i];
cb.LightColor[i] = this.lightColors[i];
}
//cb.LightDir0 = this.lightDirs[0];
//cb.LightDir1 = this.lightDirs[1];
//cb.LightColor0 = this.lightColors[0];
//cb.LightColor1 = this.lightColors[1];
cb.OutputColor = new XMFloat4(0, 0, 0, 0);
context.UpdateSubresource(this.constantBuffer, 0, null, cb, 0, 0);
// Render the cube
context.VertexShaderSetShader(this.vertexShader, null);
context.VertexShaderSetConstantBuffers(0, new[] { this.constantBuffer });
context.PixelShaderSetShader(this.pixelShader, null);
context.PixelShaderSetConstantBuffers(0, new[] { this.constantBuffer });
context.DrawIndexed((uint)MainGameComponent.Indices.Length, 0, 0);
// Render each light
context.PixelShaderSetShader(this.pixelShaderSolid, null);
for (int m = 0; m < 2; m++)
{
XMMatrix light = XMMatrix.TranslationFromVector(5.0f * this.lightDirs[m].ToVector());
XMMatrix lightScale = XMMatrix.Scaling(0.2f, 0.2f, 0.2f);
light = lightScale * light;
// Update the world variable to reflect the current light
cb.World = light.Transpose();
cb.OutputColor = this.lightColors[m];
context.UpdateSubresource(this.constantBuffer, 0, null, cb, 0, 0);
context.DrawIndexed((uint)MainGameComponent.Indices.Length, 0, 0);
}
}