protected override void Draw(GameTime gameTime)
{
GraphicsDevice.Clear(Color.Black);
GraphicsDevice.Clear(ClearOptions.DepthBuffer, Color.Black, 1f, 1);
GraphicsDevice.BlendState = BlendState.Opaque;
GraphicsDevice.SamplerStates[0] = ss_point_clamp;
GraphicsDevice.DepthStencilState = ds_standard_less;
if (WireframeOnOrOff)
{
GraphicsDevice.RasterizerState = rs_nocullwireframe;
}
else
{
GraphicsDevice.RasterizerState = rs_cull_cw_solid;
}
// set model world
var modelWorld = Matrix.Identity;
//modelWorld = Matrix.CreateRotationY(1.5f);
//modelWorld.Translation = new Vector3(5f, -0f, 0f);
// set sphere orientation
var sphereOrientation = Matrix.Identity * lightTransform;
sphereOrientation.Translation = new Vector3(0, -50f, 0f);
// light pos
var lightpos = Vector3.Transform(initialLightPosition, lightTransform);
// set light to shader
riggedEffect.Parameters["WorldLightPosition"].SetValue(lightpos);
// set view to shader
riggedEffect.Parameters["View"].SetValue(cam.View);
// set camera world position to shader
riggedEffect.Parameters["CameraPosition"].SetValue(cam.Position); // cam.Position // cam.View.Translation
// remake the line
lineToLight = new LinePCT(.1f, Color.White, sphereOrientation.Translation, lightpos);
//_______________________________
// draw a line to the light source.
//_______________________________
riggedEffect.CurrentTechnique = riggedEffect.Techniques["ColorDraw"];
riggedEffect.Parameters["World"].SetValue(Matrix.Identity);
riggedEffect.Parameters["TextureA"].SetValue(defaultTexture);
lineToLight.Draw(GraphicsDevice, riggedEffect);
//_______________________________
// draw sphere.
//_______________________________
// move the spheres down a bit first
riggedEffect.Parameters["World"].SetValue(sphereOrientation);
riggedEffect.CurrentTechnique = riggedEffect.Techniques["ColorTextureLightingDraw"];
littleSphere.Draw(GraphicsDevice, riggedEffect);
bigShere.Draw(GraphicsDevice, riggedEffect);
// draw sphere normals
riggedEffect.CurrentTechnique = riggedEffect.Techniques["ColorTextureLightingNormalsDraw"];
GraphicsDevice.RasterizerState = rs_nocullsolid;
if (ShowNormals)
{
primitiveNormalArrows.Draw(GraphicsDevice, riggedEffect);
}
if (WireframeOnOrOff)
{
GraphicsDevice.RasterizerState = rs_nocullwireframe;
}
else
{
GraphicsDevice.RasterizerState = rs_cull_cw_solid;
}
//_______________________________
// model and normals
//_______________________________
// draw a little sphere in the model just make sure the model isnt backface.
var m = Matrix.Identity;
m.Translation = new Vector3(0, 20, 0);
riggedEffect.Parameters["World"].SetValue(m);
littleSphere.Draw(GraphicsDevice, riggedEffect);
// draw models.
if (model != null)
{
riggedEffect.CurrentTechnique = riggedEffect.Techniques["RiggedModelDraw"];
modelWorld = Matrix.Identity;
riggedEffect.Parameters["World"].SetValue(modelWorld);
model.effect = riggedEffect;
model.Draw(GraphicsDevice, modelWorld);
}
// draw models normals.
riggedEffect.CurrentTechnique = riggedEffect.Techniques["RiggedModelNormalDraw"];
GraphicsDevice.RasterizerState = rs_nocullsolid;
if (ShowNormals)
{
modelVisualNormals.Draw(GraphicsDevice, riggedEffect);
}
DrawSpriteBatches(gameTime);
base.Draw(gameTime);
}