/// <summary>
/// Move vertexes' position accroding to <paramref name="modelSpacePositionDiff"/>.
/// <para>根据<paramref name="modelSpacePositionDiff"/>来修改指定索引处的顶点位置。</para>
/// </summary>
/// <param name="modelSpacePositionDiff"></param>
/// <param name="positionIndexes"></param>
/// <returns></returns>
public vec3[] MovePositions(vec3 modelSpacePositionDiff, IEnumerable <uint> positionIndexes)
{
var buffers = this.PickingRenderMethod.PositionBuffers;
IEnumerable <IndexesInBuffer> workItems = buffers.GetWorkItems(positionIndexes);
var list = new List <vec3>();
foreach (var item in workItems)
{
VertexBuffer buffer = buffers[item.whichBuffer];
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.ReadWrite);
unsafe
{
var array = (vec3 *)pointer.ToPointer();
foreach (var indexInBuffer in item.indexesInBuffer)
{
array[indexInBuffer] = array[indexInBuffer] + modelSpacePositionDiff;
list.Add(array[indexInBuffer]);
}
}
buffer.UnmapBuffer();
}
return(list.ToArray());
}
/// <summary>
/// Move vertexes' position accroding to difference on screen.
/// <para>根据<paramref name="differenceOnScreen"/>来修改指定索引处的顶点位置。</para>
/// </summary>
/// <param name="differenceOnScreen"></param>
/// <param name="viewMatrix"></param>
/// <param name="projectionMatrix"></param>
/// <param name="viewport"></param>
/// <param name="positionIndexes"></param>
/// <returns></returns>
public vec3[] MovePositions(ivec2 differenceOnScreen,
mat4 viewMatrix, mat4 projectionMatrix, vec4 viewport, params uint[] positionIndexes)
{
var list = new vec3[positionIndexes.Length];
VertexBuffer buffer = this.PickingRenderUnit.PositionBuffer;
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.ReadWrite);
unsafe
{
mat4 modelMatrix = this.GetModelMatrix();
mat4 modelViewMatrix = viewMatrix * modelMatrix;
var array = (vec3 *)pointer.ToPointer();
foreach (uint index in positionIndexes)
{
vec3 windowPos = glm.project(array[index], modelViewMatrix, projectionMatrix, viewport);
var newWindowPos = new vec3(
windowPos.x + differenceOnScreen.x,
windowPos.y + differenceOnScreen.y,
windowPos.z);
vec3 result = glm.unProject(newWindowPos, modelViewMatrix, projectionMatrix, viewport);
array[index] = result;
list[index] = result;
}
}
buffer.UnmapBuffer();
return(list);
}
public CSharpGL.VertexBuffer GetVertexAttributeBuffer(string bufferName, string varNameInShader)
{
if ((bufferName == position))
{
if ((this.positionBuffer == null))
{
int length = this.pointCount;
VertexBuffer buffer = VertexBuffer.Create(typeof(vec3), length, VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
unsafe
{
var random = new Random();
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.WriteOnly);
var array = (vec3 *)pointer;
for (int i = 0; i < this.pointCount; i++)
{
array[i] = (new vec3((float)random.NextDouble(), (float)random.NextDouble(), (float)random.NextDouble()) - new vec3(0.5f, 0.5f, 0.5f)) * this.Lengths;
}
buffer.UnmapBuffer();
}
this.positionBuffer = buffer;
}
return(positionBuffer);
}
else
{
throw new System.ArgumentException("bufferName");
}
}
private void PickingLastLineInLineLoop(out uint[] vertexIds, out vec3[] positions)
{
const int vertexCount = 2;
VertexBuffer[] buffers = this.Node.PickingRenderMethod.PositionBuffers;
int sum = (from item in buffers select item.Length).Sum();
vertexIds = new uint[vertexCount] {
(uint)(sum - 1), 0
};
IEnumerable <IndexesInBuffer> workItems = buffers.GetWorkItems(vertexIds);
var positionList = new List <vec3>();
foreach (var item in workItems)
{
VertexBuffer buffer = buffers[item.whichBuffer];
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.ReadOnly);
unsafe
{
var array = (vec3 *)pointer.ToPointer();
foreach (var indexInBuffer in item.indexesInBuffer)
{
positionList.Add(array[indexInBuffer]);
}
}
buffer.UnmapBuffer();
}
if (positionList.Count != vertexCount)
{
throw new Exception();
}
positions = positionList.ToArray();
}
/// <summary>
/// start from (0, 0) to the right.
/// </summary>
/// <param name="text"></param>
/// <param name="server"></param>
/// <param name="totalWidth"></param>
/// <param name="totalHeight"></param>
unsafe private void PositionPass(string text, GlyphServer server,
out float totalWidth, out float totalHeight)
{
int textureWidth = server.TextureWidth;
int textureHeight = server.TextureHeight;
VertexBuffer buffer = this.positionBuffer;
var positionArray = (QuadStruct *)buffer.MapBuffer(MapBufferAccess.ReadWrite);
const float height = 2.0f; // let's say height is 2.0f.
totalWidth = 0;
totalHeight = height;
int index = 0;
foreach (var c in text)
{
GlyphInfo glyphInfo;
float wByH = 0;
if (server.GetGlyphInfo(c, out glyphInfo))
{
float w = (glyphInfo.quad.rightBottom.x - glyphInfo.quad.leftBottom.x) * textureWidth;
float h = (glyphInfo.quad.rightBottom.y - glyphInfo.quad.rightTop.y) * textureHeight;
wByH = height * w / h;
}
else
{
// put an empty glyph(square) here.
wByH = height * 1.0f / 1.0f;
}
var leftTop = new vec2(totalWidth, 1f);
var leftBottom = new vec2(totalWidth, -1f);
var rightBottom = new vec2(totalWidth + wByH, -1f);
var rightTop = new vec2(totalWidth + wByH, 1f);
positionArray[index++] = new QuadStruct(leftTop, leftBottom, rightBottom, rightTop);
totalWidth += wByH;
}
// move to center.
const float scale = 1f;
for (int i = 0; i < text.Length; i++)
{
QuadStruct quad = positionArray[i];
var newPos = new QuadStruct(
// y is already in [-1, 1], so just shrink x to [-1, 1]
new vec2(quad.leftTop.x / totalWidth * 2.0f - 1f, quad.leftTop.y) * scale,
new vec2(quad.leftBottom.x / totalWidth * 2.0f - 1f, quad.leftBottom.y) * scale,
new vec2(quad.rightBottom.x / totalWidth * 2.0f - 1f, quad.rightBottom.y) * scale,
new vec2(quad.rightTop.x / totalWidth * 2.0f - 1f, quad.rightTop.y) * scale
);
positionArray[i] = newPos;
}
buffer.UnmapBuffer();
}
private VertexBuffer GetPositionBuffer()
{
bool initialized = false;
vec3 max = new vec3();
vec3 min = new vec3();
int uCount = GetUCount(interval);
int vCount = GetVCount(interval);
int length = uCount * vCount;
VertexBuffer buffer = VertexBuffer.Create(typeof(vec3), length, VBOConfig.Vec3, BufferUsage.StaticDraw);
unsafe
{
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.WriteOnly);
var array = (vec3 *)pointer;
int index = 0;
for (int uIndex = 0; uIndex < uCount; uIndex++)
{
for (int vIndex = 0; vIndex < vCount; vIndex++)
{
double u = Math.PI * uIndex / uCount;
double v = Math.PI * 2 * vIndex / vCount;
var position = GetPosition(u, v);
if (!initialized)
{
max = position;
min = position;
initialized = true;
}
else
{
position.UpdateMax(ref max);
position.UpdateMin(ref min);
}
array[index++] = position;
}
}
//this.Lengths = max - min;
vec3 worldPosition = max / 2.0f + min / 2.0f;
for (int i = 0; i < index; i++)
{
array[i] = array[i] - worldPosition;
}
buffer.UnmapBuffer();
}
return(buffer);
}
/// <summary>
/// start from (0, 0) to the right.
/// </summary>
/// <param name="text"></param>
/// <param name="server"></param>
/// <param name="totalWidth"></param>
/// <param name="totalHeight"></param>
unsafe private void PositionPass(string text, GlyphServer server,
out float totalWidth, out float totalHeight)
{
int textureWidth = server.TextureWidth;
int textureHeight = server.TextureHeight;
VertexBuffer buffer = this.positionBuffer;
var positionArray = (QuadPositionStruct *)buffer.MapBuffer(MapBufferAccess.ReadWrite);
const float height = 2; // 2 is the height value in clip space.
totalWidth = 0;
totalHeight = height;
int index = 0;
foreach (var c in text)
{
if (index >= this.textModel.Capacity)
{
break;
}
GlyphInfo glyphInfo;
float wByH = 0;
if (server.GetGlyphInfo(c, out glyphInfo))
{
float w = (glyphInfo.quad.rightBottom.x - glyphInfo.quad.leftBottom.x) * textureWidth;
float h = (glyphInfo.quad.rightBottom.y - glyphInfo.quad.rightTop.y) * textureHeight;
wByH = height * w / h;
}
else
{
// put an empty glyph(square) here.
wByH = height * 1.0f / 1.0f;
}
var leftTop = new vec2(totalWidth, height);
var leftBottom = new vec2(totalWidth, 0);
var rightBottom = new vec2(totalWidth + wByH, 0);
var rightTop = new vec2(totalWidth + wByH, height);
positionArray[index++] = new QuadPositionStruct(leftTop, leftBottom, rightBottom, rightTop);
totalWidth += wByH;
}
buffer.UnmapBuffer();
}
/// <summary>
/// start from (0, 0) to the right.
/// </summary>
/// <param name="text"></param>
/// <param name="server"></param>
unsafe private void UVPass(string text, GlyphServer server)
{
VertexBuffer buffer = this.uvBuffer;
var uvArray = (QuadStruct *)buffer.MapBuffer(MapBufferAccess.WriteOnly);
int index = 0;
foreach (var c in text)
{
GlyphInfo glyphInfo;
if (server.GetGlyphInfo(c, out glyphInfo))
{
uvArray[index] = glyphInfo.quad;
}
index++;
}
buffer.UnmapBuffer();
}
/// <summary>
/// start from (0, 0) to the right.
/// </summary>
/// <param name="text"></param>
/// <param name="server"></param>
unsafe private void TextureIndexPass(string text, GlyphServer server)
{
VertexBuffer buffer = this.textureIndexBuffer;
var textureIndexArray = (float *)buffer.MapBuffer(MapBufferAccess.WriteOnly);
int index = 0;
foreach (var c in text)
{
GlyphInfo glyphInfo;
if (server.GetGlyphInfo(c, out glyphInfo))
{
textureIndexArray[index] = glyphInfo.textureIndex;
}
index++;
}
buffer.UnmapBuffer();
}
private VertexBuffer GetTexCoordBuffer()
{
int uCount = GetUCount(interval);
int length = uCount;
VertexBuffer buffer = VertexBuffer.Create(typeof(float), length, VBOConfig.Float, BufferUsage.StaticDraw);
unsafe
{
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.WriteOnly);
int index = 0;
var array = (float *)pointer;
for (int uIndex = 0; uIndex < uCount; uIndex++)
{
array[index++] = (float)uIndex / (float)uCount;
}
buffer.UnmapBuffer();
}
return(buffer);
}
/// <summary>
/// Move vertexes' position accroding to <paramref name="modelSpacePositionDiff"/>.
/// <para>根据<paramref name="modelSpacePositionDiff"/>来修改指定索引处的顶点位置。</para>
/// </summary>
/// <param name="modelSpacePositionDiff"></param>
/// <param name="positionIndexes"></param>
/// <returns></returns>
public IList <vec3> MovePositions(vec3 modelSpacePositionDiff, IEnumerable <uint> positionIndexes)
{
var list = new List <vec3>();
VertexBuffer buffer = this.PickingRenderUnit.PositionBuffer;
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.ReadWrite);
unsafe
{
var array = (vec3 *)pointer.ToPointer();
foreach (uint index in positionIndexes)
{
array[index] = array[index] + modelSpacePositionDiff;
list.Add(array[index]);
}
}
buffer.UnmapBuffer();
return(list);
}
/// <summary>
/// Move vertexes' position accroding to <paramref name="modelSpacePositionDiff"/>.
/// <para>根据<paramref name="modelSpacePositionDiff"/>来修改指定索引处的顶点位置。</para>
/// </summary>
/// <param name="modelSpacePositionDiff"></param>
/// <param name="positionIndexes"></param>
/// <returns></returns>
public vec3[] MovePositions(vec3 modelSpacePositionDiff, params uint[] positionIndexes)
{
var list = new vec3[positionIndexes.Length];
VertexBuffer buffer = this.PickingRenderUnit.PositionBuffer;
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.ReadWrite);
unsafe
{
var array = (vec3 *)pointer.ToPointer();
int t = 0;
foreach (uint index in positionIndexes)
{
array[index] = array[index] + modelSpacePositionDiff;
list[t++] = array[index];
}
}
buffer.UnmapBuffer();
return(list);
}
protected vec3[] FillPickedGeometrysPosition(uint[] positionIndexes)
{
VertexBuffer[] buffers = this.Node.PickingRenderMethod.PositionBuffers;
IEnumerable <IndexesInBuffer> workItems = buffers.GetWorkItems(positionIndexes);
var positions = new List <vec3>();
foreach (var item in workItems)
{
VertexBuffer buffer = buffers[item.whichBuffer];
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.ReadOnly);
unsafe
{
var array = (vec3 *)pointer.ToPointer();
foreach (var indexInBuffer in item.indexesInBuffer)
{
positions.Add(array[indexInBuffer]);
}
}
buffer.UnmapBuffer();
}
return(positions.ToArray());
}
/// <summary>
/// start from (0, 0) to the right.
/// </summary>
/// <param name="text"></param>
/// <param name="server"></param>
unsafe private void UVPass(string text, GlyphServer server)
{
VertexBuffer buffer = this.stringBuffer;
var textureIndexArray = (QuadSTRStruct *)buffer.MapBuffer(MapBufferAccess.WriteOnly);
int index = 0;
foreach (var c in text)
{
if (index >= this.labelModel.Capacity)
{
break;
}
GlyphInfo glyphInfo;
if (server.GetGlyphInfo(c, out glyphInfo))
{
textureIndexArray[index] = glyphInfo.quad;
}
index++;
}
buffer.UnmapBuffer();
}
/// <summary>
///
/// </summary>
/// <param name="bufferName"></param>
/// <param name="varNameInShader"></param>
/// <returns></returns>
public VertexBuffer GetVertexAttributeBuffer(string bufferName, string varNameInShader)
{
if (bufferName == strPosition)
{
if (this.positionBuffer == null)
{
int length = 1;
VertexBuffer buffer = VertexBuffer.Create(typeof(CubeModel.CubePosition), length, VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
unsafe
{
IntPtr pointer = buffer.MapBuffer(MapBufferAccess.ReadWrite);
{
var array = (CubeModel.CubePosition *)pointer;
array[0] = CubeModel.position;
}
{
var array = (vec3 *)pointer;
for (int i = 0; i < 24; i++)
{
array[i] = array[i] / 2 * Lengths;
}
}
buffer.UnmapBuffer();
}
this.positionBuffer = buffer;
}
return(this.positionBuffer);
}
else if (bufferName == strColor)
{
if (this.colorBuffer == null)
{
//int length = 1;
//VertexBuffer buffer = VertexBuffer.Create(typeof(CubeModel.CubeColor), length, VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
//unsafe
//{
// IntPtr pointer = buffer.MapBuffer(MapBufferAccess.WriteOnly);
// var array = (CubeModel.CubeColor*)pointer;
// array[0] = CubeModel.color;
// buffer.UnmapBuffer();
//}
//this.colorBuffer = buffer;
// another way to do this:
this.colorBuffer = CubeModel.color.GenVertexBuffer(VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
}
return(this.colorBuffer);
}
else if (bufferName == strNormal)
{
if (this.normalBuffer == null)
{
//int length = 1;
//VertexBuffer buffer = VertexBuffer.Create(typeof(CubeModel.CubeNormal), length, VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
//unsafe
//{
// IntPtr pointer = buffer.MapBuffer(MapBufferAccess.WriteOnly);
// var array = (CubeModel.CubeNormal*)pointer;
// array[0] = CubeModel.normal;
// buffer.UnmapBuffer();
//}
//this.normalBuffer = buffer;
// another way to do this:
this.normalBuffer = CubeModel.normal.GenVertexBuffer(VBOConfig.Vec3, varNameInShader, BufferUsage.StaticDraw);
}
return(this.normalBuffer);
}
else
{
return(null);
}
}