private void IntCreatePath(GLItemsList items, GLRenderProgramSortedList rObjects, GLStorageBlock bufferfindresults)
{
HistoryEntry lastone = lastpos != -1 && lastpos < currentfilteredlist.Count ? currentfilteredlist[lastpos] : null; // see if lastpos is there, and store it
if (TravelPathEndDateEnable || TravelPathStartDateEnable)
{
currentfilteredlist = unfilteredlist.Where(x => (!TravelPathStartDateEnable || x.EventTimeUTC >= TravelPathStartDate) && (!TravelPathEndDateEnable || x.EventTimeUTC <= TravelPathEndDate)).ToList();
if (currentfilteredlist.Count > MaxStars)
{
currentfilteredlist = currentfilteredlist.Skip(currentfilteredlist.Count - MaxStars).ToList();
}
}
else
{
if (unfilteredlist.Count > MaxStars)
{
currentfilteredlist = unfilteredlist.Skip(currentfilteredlist.Count - MaxStars).ToList();
}
else
{
currentfilteredlist = unfilteredlist;
}
}
// do date filter on currentfilteredlist
lastpos = lastone == null ? -1 : currentfilteredlist.IndexOf(lastone); // may be -1, may have been removed
var positionsv4 = currentfilteredlist.Select(x => new Vector4((float)x.System.X, (float)x.System.Y, (float)x.System.Z, 0)).ToArray();
var colours = currentfilteredlist.Select(x => x.JumpColor).ToArray();
float seglen = tapesize * 10;
// a tape is a set of points (item1) and indexes to select them (item2), so we need an element index in the renderer to use.
var tape = GLTapeObjectFactory.CreateTape(positionsv4, colours, tapesize, seglen, 0F.Radians(), margin: sunsize * 1.2f);
if (ritape == null) // first time..
{
// first the tape
var tapetex = new GLTexture2D(Properties.Resources.chevron, internalformat: OpenTK.Graphics.OpenGL4.SizedInternalFormat.Rgba8); // tape image
items.Add(tapetex);
tapetex.SetSamplerMode(OpenTK.Graphics.OpenGL4.TextureWrapMode.Repeat, OpenTK.Graphics.OpenGL4.TextureWrapMode.Repeat);
tapefrag = new GLPLFragmentShaderTextureTriStripColorReplace(1, Color.FromArgb(255, 206, 0, 0));
var vert = new GLPLVertexShaderWorldTextureTriStrip();
tapeshader = new GLShaderPipeline(vert, tapefrag);
items.Add(tapeshader);
GLRenderState rts = GLRenderState.Tri(tape.Item3, cullface: false); // set up a Tri strip, primitive restart value set from tape, no culling
rts.DepthTest = depthtest; // no depth test so always appears
// now the renderer, set up with the render control, tape as the points, and bind a RenderDataTexture so the texture gets binded each time
ritape = GLRenderableItem.CreateVector4(items, OpenTK.Graphics.OpenGL4.PrimitiveType.TriangleStrip, rts, tape.Item1.ToArray(), new GLRenderDataTexture(tapetex));
tapepointbuf = items.LastBuffer(); // keep buffer for refill
ritape.Visible = tape.Item1.Count > 0; // no items, set not visible, so it won't except over the BIND with nothing in the element buffer
ritape.CreateElementIndex(items.NewBuffer(), tape.Item2.ToArray(), tape.Item3); // finally, we are using index to select vertexes, so create an index
rObjects.Add(tapeshader, "travelpath-tape", ritape); // add render to object list
// now the stars
starposbuf = items.NewBuffer(); // where we hold the vertexes for the suns, used by renderer and by finder
starposbuf.AllocateFill(positionsv4);
//Vector4[] vectors = starposbuf.ReadVector4s(0, starposbuf.Length / 16);
sunvertex = new GLPLVertexShaderModelCoordWorldAutoscale(new Color[] { Color.Yellow, Color.FromArgb(255, 230, 230, 1) },
autoscale: 30, autoscalemin: 1f, autoscalemax: 2f, useeyedistance: false); // below scale, 1f, above scale, scale up to x times (eyedist/scale)
sunshader = new GLShaderPipeline(sunvertex, new GLPLStarSurfaceFragmentShader());
items.Add(sunshader);
var shape = GLSphereObjectFactory.CreateSphereFromTriangles(2, sunsize);
GLRenderState rt = GLRenderState.Tri(); // render is triangles, with no depth test so we always appear
rt.DepthTest = depthtest;
rt.DepthClamp = true;
renderersun = GLRenderableItem.CreateVector4Vector4(items, OpenTK.Graphics.OpenGL4.PrimitiveType.Triangles, rt, shape, starposbuf, 0, null, currentfilteredlist.Count, 1);
rObjects.Add(sunshader, "travelpath-suns", renderersun);
// find compute
var geofind = new GLPLGeoShaderFindTriangles(bufferfindresults, 16);
findshader = items.NewShaderPipeline(null, sunvertex, null, null, geofind, null, null, null);
rifind = GLRenderableItem.CreateVector4Vector4(items, OpenTK.Graphics.OpenGL4.PrimitiveType.Triangles, GLRenderState.Tri(), shape, starposbuf, ic: currentfilteredlist.Count, seconddivisor: 1);
// Sun names, handled by textrenderer
textrenderer = new GLBitmaps("bm-travelmap", rObjects, new Size(128, 40), depthtest: depthtest, cullface: false);
items.Add(textrenderer);
}
else
{
tapepointbuf.AllocateFill(tape.Item1.ToArray()); // replace the points with a new one
ritape.RenderState.PrimitiveRestart = GL4Statics.DrawElementsRestartValue(tape.Item3); // IMPORTANT missing bit Robert, must set the primitive restart value to the new tape size
ritape.CreateElementIndex(ritape.ElementBuffer, tape.Item2.ToArray(), tape.Item3); // update the element buffer
ritape.Visible = tape.Item1.Count > 0;
starposbuf.AllocateFill(positionsv4); // and update the star position buffers so find and sun renderer works
renderersun.InstanceCount = positionsv4.Length; // update the number of suns to draw.
rifind.InstanceCount = positionsv4.Length; // update the find list
}
// name bitmaps
HashSet <object> hashset = new HashSet <object>(currentfilteredlist); // so it can find it quickly
textrenderer.CurrentGeneration++; // setup for next generation
textrenderer.RemoveGeneration(textrenderer.CurrentGeneration - 1, hashset); // and remove all of the previous one which are not in hashset.
Font fnt = new Font("Arial", 8.5F);
using (StringFormat fmt = new StringFormat())
{
fmt.Alignment = StringAlignment.Center;
foreach (var isys in currentfilteredlist)
{
if (textrenderer.Exist(isys) == false) // if does not exist already, need a new label
{
textrenderer.Add(isys, isys.System.Name, fnt, Color.White, Color.Transparent, new Vector3((float)isys.System.X, (float)isys.System.Y - 5, (float)isys.System.Z),
new Vector3(20, 0, 0), new Vector3(0, 0, 0), textformat: fmt, rotatetoviewer: true, rotateelevation: false, alphafadescalar: -200, alphafadepos: 300);
}
}
}
fnt.Dispose();
}
public void Start(string name, int maxstars, float sunsize, float tapesize, GLStorageBlock bufferfindresults, bool depthtest, GLItemsList items, GLRenderProgramSortedList rObjects)
{
this.MaxStars = maxstars;
this.tapesize = tapesize;
this.sunsize = sunsize;
// first the tape
var tapetex = new GLTexture2D(BaseUtils.Icons.IconSet.GetBitmap("GalMap.chevron"), internalformat: OpenTK.Graphics.OpenGL4.SizedInternalFormat.Rgba8); // tape image
items.Add(tapetex);
tapetex.SetSamplerMode(OpenTK.Graphics.OpenGL4.TextureWrapMode.Repeat, OpenTK.Graphics.OpenGL4.TextureWrapMode.Repeat);
// configure the fragger, set the replacement color, and set the distance where the replacement color is used for all pixels
tapefrag = new GLPLFragmentShaderTextureTriStripColorReplace(1, Color.FromArgb(255, 206, 0, 0), 1000);
// create the vertex shader with the autoscale required
var vert = new GLPLVertexShaderWorldTextureTriStripNorm(100, 1, 10000);
vert.SetWidth(tapesize); // set the nominal tape width
tapeshader = new GLShaderPipeline(vert, tapefrag);
items.Add(tapeshader);
GLRenderState rts = GLRenderState.Tri(OpenTK.Graphics.OpenGL4.DrawElementsType.UnsignedByte, cullface: false); // set up a Tri strip, Default primitive restart
rts.DepthTest = depthtest; // no depth test so always appears
// now the renderer, set up with the render control, tape as the points, and bind a RenderDataTexture so the texture gets binded each time
var zerotape = new Vector4[] { Vector4.Zero }; // just use an dummy array to get this going
ritape = GLRenderableItem.CreateVector4Vector4(items, OpenTK.Graphics.OpenGL4.PrimitiveType.TriangleStrip, rts, zerotape, zerotape, new GLRenderDataTexture(tapetex));
tapepointbuf = items.LastBuffer(); // keep buffer for refill
ritape.ElementBuffer = items.NewBuffer(); // empty buffer for element index for now
ritape.Visible = false; // until its filled, not visible (important, we don't want render to execute unless its been fully set up below)
rObjects.Add(tapeshader, name + "-tape", ritape); // add render to object list
// now the stars
starposbuf = items.NewBuffer(); // where we hold the vertexes for the suns, used by renderer and by finder
// the colour index of the stars is selected by the w parameter of the world position vertexes.
// we autoscale to make them bigger at greater distances from eye
sunvertex = new GLPLVertexShaderModelCoordWorldAutoscale(new Color[] { Color.Yellow, Color.FromArgb(255, 230, 230, 1) },
autoscale: 30, autoscalemin: 1, autoscalemax: 2, useeyedistance: false);
sunshader = new GLShaderPipeline(sunvertex, new GLPLStarSurfaceFragmentShader());
items.Add(sunshader);
var shape = GLSphereObjectFactory.CreateSphereFromTriangles(2, sunsize);
GLRenderState rt = GLRenderState.Tri(); // render is triangles, with no depth test so we always appear
rt.DepthTest = depthtest;
rt.DepthClamp = true;
renderersun = GLRenderableItem.CreateVector4Vector4(items, OpenTK.Graphics.OpenGL4.PrimitiveType.Triangles, rt, shape, starposbuf, 0, null, 0, 1);
renderersun.Visible = false; // until its filled, not visible
rObjects.Add(sunshader, name + "-suns", renderersun);
// find compute
var geofind = new GLPLGeoShaderFindTriangles(bufferfindresults, 16);
findshader = items.NewShaderPipeline(null, sunvertex, null, null, geofind, null, null, null);
rifind = GLRenderableItem.CreateVector4Vector4(items, OpenTK.Graphics.OpenGL4.PrimitiveType.Triangles, GLRenderState.Tri(), shape, starposbuf, ic: 0, seconddivisor: 1);
// Sun names, handled by textrenderer
textrenderer = new GLBitmaps(name + "-text", rObjects, BitMapSize, depthtest: depthtest, cullface: false);
items.Add(textrenderer);
}
