public void OnDrawFrame(IGL10 gl)
{
/*
* Usually, the first thing one might want to do is to clear
* the screen. The most efficient way of doing this is to use
* glClear().
*/
gl.GlClear(GL10.GlColorBufferBit | GL10.GlDepthBufferBit);
/*
* Now we're ready to draw some 3D objects
*/
gl.GlMatrixMode(GL10.GlModelview);
gl.GlLoadIdentity();
gl.GlTranslatef(0, 0, -3.0f);
gl.GlRotatef(mAngle, 0, 1, 0);
gl.GlRotatef(mAngle * 0.25f, 1, 0, 0);
gl.GlEnableClientState(GL10.GlVertexArray);
gl.GlEnableClientState(GL10.GlColorArray);
mCube.Draw(gl);
gl.GlRotatef(mAngle * 2.0f, 0, 1, 1);
gl.GlTranslatef(0.5f, 0.5f, 0.5f);
mCube.Draw(gl);
mAngle += 1.2f;
}
public override void Present(float deltaTime)
{
IGL10 gl = _glGraphics.GL10;
gl.GlViewport(0, 0, _glGraphics.Width, _glGraphics.Height);
gl.GlClearColor(0, 0, 0, 1);
gl.GlClear(GL10.GlColorBufferBit);
gl.GlMatrixMode(GL10.GlProjection);
gl.GlLoadIdentity();
gl.GlOrthof(0, 540, 0, 960, 1, -1);
gl.GlEnable(GL10.GlTexture2d);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlEnable(GL10.GlBlend);
gl.GlBindTexture(GL10.GlTexture2d, _textureId);
gl.GlEnableClientState(GL10.GlVertexArray);
gl.GlEnableClientState(GL10.GlTextureCoordArray);
_vertices.Position(0);
gl.GlVertexPointer(2, GL10.GlFloat, _vertexSize, _vertices);
_vertices.Position(2);
gl.GlTexCoordPointer(2, GL10.GlFloat, _vertexSize, _vertices);
gl.GlDrawArrays(GL10.GlTriangles, 0, 3);
//gl.GlDisableClientState(GL10.GlVertexArray);
//gl.GlDisableClientState(GL10.GlTextureCoordArray);
}
/// <summary>
/// Raises the draw frame event.
/// </summary>
/// <param name="gl">Gl.</param>
public void OnDrawFrame(IGL10 gl)
{
// Replace the current matrix with the identity matrix
gl.GlMatrixMode(GL10.GlProjection);
gl.GlLoadIdentity(); // OpenGL docs
gl.GlOrthof(_left, _right, _bottom, _top, -1, 1);
for (int idx = 0; idx < _triangles.Count; idx++)
{
gl.GlVertexPointer(3, GL10.GlFloat, 0, _triangles[idx].Vertices);
gl.GlEnableClientState(GL10.GlVertexArray);
gl.GlColorPointer(4, GL10.GlUnsignedByte, 0, _triangles[idx].Colors);
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, _triangles[idx].Count);
}
for (int idx = 0; idx < _lines.Count; idx++)
{
gl.GlVertexPointer(3, GL10.GlFloat, 0, _lines[idx].Vertices);
gl.GlEnableClientState(GL10.GlVertexArray);
SimpleColor color = new SimpleColor()
{
Value = _lines[idx].Color
};
gl.GlColor4f(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
gl.GlLineWidth(_lines [idx].Width);
gl.GlDrawArrays(GL10.GlLineStrip, 0, _lines[idx].Count);
}
}
public void OnDrawFrame(IGL10 gl)
{
/*
* Usually, the first thing one might want to do is to clear
* the screen. The most efficient way of doing this is to use
* glClear().
*/
gl.GlClear (GL10.GlColorBufferBit | GL10.GlDepthBufferBit);
/*
* Now we're ready to draw some 3D objects
*/
gl.GlMatrixMode (GL10.GlModelview);
gl.GlLoadIdentity ();
gl.GlTranslatef (0, 0, -3.0f);
gl.GlRotatef (mAngle, 0, 1, 0);
gl.GlRotatef (mAngle*0.25f, 1, 0, 0);
gl.GlEnableClientState (GL10.GlVertexArray);
gl.GlEnableClientState (GL10.GlColorArray);
mCube.Draw (gl);
gl.GlRotatef (mAngle*2.0f, 0, 1, 1);
gl.GlTranslatef (0.5f, 0.5f, 0.5f);
mCube.Draw (gl);
mAngle += 1.2f;
}
public void OnDrawFrame(IGL10 gl)
{
// 清除屏幕缓存和深度缓存
gl.GlClear(GL10.GlColorBufferBit | GL10.GlDepthBufferBit);
// 启用顶点坐标数据
gl.GlEnableClientState(GL10.GlVertexArray);
// 启用贴图坐标数组数据
gl.GlEnableClientState(GL10.GlTextureCoordArray); // ①
// 设置当前矩阵模式为模型视图。
gl.GlMatrixMode(GL10.GlModelview);
gl.GlLoadIdentity();
// 把绘图中心移入屏幕2个单位
gl.GlTranslatef(0f, 0.0f, -2.0f);
// 旋转图形
gl.GlRotatef(ma.angleY, 0, 1, 0);
gl.GlRotatef(ma.angleX, 1, 0, 0);
// 设置顶点的位置数据
gl.GlVertexPointer(3, GL10.GlFloat, 0, cubeVerticesBuffer);
// 设置贴图的坐标数据
gl.GlTexCoordPointer(2, GL10.GlFloat, 0, cubeTexturesBuffer); // ②
// 执行纹理贴图
gl.GlBindTexture(GL10.GlTexture2d, texture); // ③
// 按cubeFacetsBuffer指定的面绘制三角形
gl.GlDrawElements(GL10.GlTriangles, cubeFacetsBuffer.Remaining(),
GL10.GlUnsignedByte, cubeFacetsBuffer);
// 绘制结束
gl.GlFinish();
// 禁用顶点、纹理坐标数组
gl.GlDisableClientState(GL10.GlVertexArray);
gl.GlDisableClientState(GL10.GlTextureCoordArray);
// 递增角度值以便每次以不同角度绘制
}
public void Draw(IGL10 gl)
{
gl.GlFrontFace(IGL10Constants.GL_CW);
gl.GlVertexPointer(3, IGL10Constants.GL_FLOAT, 0, mVertexBuffer);
gl.GlColorPointer(4, IGL10Constants.GL_FLOAT, 0, mColorBuffer);
gl.GlEnableClientState(IGL10Constants.GL_VERTEX_ARRAY);
gl.GlEnableClientState(IGL10Constants.GL_COLOR_ARRAY);
// draw all 36 triangles
gl.GlDrawElements(IGL10Constants.GL_TRIANGLES, 36, IGL10Constants.GL_UNSIGNED_BYTE,
mIndexBuffer);
gl.GlDisableClientState(IGL10Constants.GL_VERTEX_ARRAY);
gl.GlDisableClientState(IGL10Constants.GL_COLOR_ARRAY);
}
public void Draw(IGL10 gl)
{
gl.GlFrontFace(IGL10Constants.GL_CW);
gl.GlVertexPointer(3, IGL10Constants.GL_FLOAT, 0, mVertexBuffer);
gl.GlColorPointer(4, IGL10Constants.GL_FLOAT, 0, mColorBuffer);
gl.GlEnableClientState(IGL10Constants.GL_VERTEX_ARRAY);
gl.GlEnableClientState(IGL10Constants.GL_COLOR_ARRAY);
// draw all 36 triangles
gl.GlDrawElements(IGL10Constants.GL_TRIANGLES, 36, IGL10Constants.GL_UNSIGNED_BYTE,
mIndexBuffer);
gl.GlDisableClientState(IGL10Constants.GL_VERTEX_ARRAY);
gl.GlDisableClientState(IGL10Constants.GL_COLOR_ARRAY);
}
public void OnDrawFrame(IGL10 gl)
{
// Our vertices.
float[] vertices =
{
-1.5f, 1.5f, 0.0f, // 0, Top Left
-1.5f, -1.5f, 0.0f, // 1, Bottom Left
1.5f, 1.5f, 0.0f, // 3, Top Right
1.5f, -1.5f, 0.0f, // 2, Bottom Right
};
// a float is 4 bytes, therefore we multiply the number if
// vertices with 4.
ByteBuffer vbb = ByteBuffer.AllocateDirect(vertices.Length * 4);
vbb.Order(ByteOrder.NativeOrder());
FloatBuffer vertexBuffer = vbb.AsFloatBuffer();
vertexBuffer.Put(vertices);
vertexBuffer.Position(0);
// The order we like to connect them.
byte[] colors =
{
(byte)0.0, (byte)255, (byte)0.0, (byte)255,
(byte)0.0, (byte)255, (byte)0.0, (byte)255,
(byte)0.0, (byte)255, (byte)0.0, (byte)255,
(byte)0.0, (byte)255, (byte)0.0, (byte)255
};
// a float is 4 bytes, therefore we multiply the number if
// vertices with 4.
ByteBuffer cbb = ByteBuffer.AllocateDirect(colors.Length * 4);
cbb.Order(ByteOrder.NativeOrder());
cbb.Put(colors);
cbb.Position(0);
gl.GlVertexPointer(3, GL10.GlFloat, 0, vertexBuffer);
gl.GlEnableClientState(GL10.GlVertexArray);
gl.GlColorPointer(4, GL10.GlUnsignedByte, 0, cbb);
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, 4);
}
public override void Present(float delta)
{
IGL10 gl = _glGraphics.GL10;
gl.GlViewport(0, 0, _glGraphics.Width, _glGraphics.Height);
gl.GlClear(GL10.GlColorBufferBit);
gl.GlMatrixMode(GL10.GlProjection);
gl.GlLoadIdentity();
gl.GlOrthof(0, 540, 0, 960, 1, -1);
//gl.GlColor4f (1,0,0,1);
gl.GlEnableClientState(GL10.GlVertexArray);
gl.GlEnableClientState(GL10.GlColorArray);
_vertices.Position(0);
gl.GlVertexPointer(2, GL10.GlFloat, _vertexSize, _vertices);
_vertices.Position(2);
gl.GlColorPointer(4, GL10.GlFloat, _vertexSize, _vertices);
gl.GlDrawArrays(GL10.GlTriangles, 0, 3);
gl.GlDrawArrays(GL10.GlTriangles, 0, 3);
}
public override void Present(float deltaTime)
{
IGL10 gl = _glGraphics.GL10;
gl.GlViewport(0, 0, _glGraphics.Width, _glGraphics.Height);
gl.GlClear(GL10.GlColorBufferBit);
gl.GlMatrixMode(GL10.GlProjection);
gl.GlLoadIdentity();
gl.GlOrthof(0, 540, 0, 960, 1, -1);
gl.GlEnable(GL10.GlTexture2d);
_texture.BindTexture();
gl.GlEnableClientState(GL10.GlVertexArray);
gl.GlEnableClientState(GL10.GlTextureCoordArray);
_vertices.Position(0);
gl.GlVertexPointer(2, GL10.GlFloat, _vertexSize, _vertices);
_vertices.Position(2);
gl.GlTexCoordPointer(2, GL10.GlFloat, _vertexSize, _vertices);
gl.GlDrawElements(GL10.GlTriangles, 6, GL10.GlUnsignedShort, _indices);
}
public void OnDrawFrame (IGL10 gl)
{
// Our vertices.
float[] vertices = {
-1.5f, 1.5f, 0.0f, // 0, Top Left
-1.5f, -1.5f, 0.0f, // 1, Bottom Left
1.5f, 1.5f, 0.0f, // 3, Top Right
1.5f, -1.5f, 0.0f, // 2, Bottom Right
};
// a float is 4 bytes, therefore we multiply the number if
// vertices with 4.
ByteBuffer vbb = ByteBuffer.AllocateDirect(vertices.Length * 4);
vbb.Order(ByteOrder.NativeOrder());
FloatBuffer vertexBuffer = vbb.AsFloatBuffer();
vertexBuffer.Put(vertices);
vertexBuffer.Position(0);
// The order we like to connect them.
byte[] colors = {
(byte)0.0, (byte)255, (byte)0.0, (byte)255,
(byte)0.0, (byte)255, (byte)0.0, (byte)255,
(byte)0.0, (byte)255, (byte)0.0, (byte)255,
(byte)0.0, (byte)255, (byte)0.0, (byte)255
};
// a float is 4 bytes, therefore we multiply the number if
// vertices with 4.
ByteBuffer cbb = ByteBuffer.AllocateDirect(colors.Length * 4);
cbb.Order(ByteOrder.NativeOrder());
cbb.Put (colors);
cbb.Position (0);
gl.GlVertexPointer (3, GL10.GlFloat, 0, vertexBuffer);
gl.GlEnableClientState (GL10.GlVertexArray);
gl.GlColorPointer(4, GL10.GlUnsignedByte, 0, cbb);
gl.GlEnableClientState (GL10.GlColorArray);
gl.GlDrawArrays (GL10.GlTriangleStrip, 0, 4);
}
public void Bind()
{
IGL10 gl = _glGraphics.GL10;
gl.GlEnableClientState(GL10.GlVertexArray);
_vertices.Position(0);
gl.GlVertexPointer(2, GL10.GlFloat, _vertexSize, _vertices);
if (_hasColor)
{
gl.GlEnableClientState(GL10.GlColorArray);
_vertices.Position(2);
gl.GlColorPointer(4, GL10.GlFloat, _vertexSize, _vertices);
}
if (_hasTexCoords)
{
gl.GlEnableClientState(GL10.GlTextureCoordArray);
_vertices.Position(_hasColor?6:2);
gl.GlTexCoordPointer(2, GL10.GlFloat, _vertexSize, _vertices);
}
}
public void OnDrawFrame(IGL10 gl)
{
// First allocate texture if there is not one yet.
if (DRAW_TEXTURE && mTextureIds == null)
{
// Generate texture.
mTextureIds = new int[2];
gl.GlGenTextures(2, mTextureIds, 0);
foreach (int textureId in mTextureIds)
{
// Set texture attributes.
gl.GlBindTexture(GL10.GlTexture2d, textureId);
gl.GlTexParameterf(GL10.GlTexture2d,
GL10.GlTextureMinFilter, GL10.GlNearest);
gl.GlTexParameterf(GL10.GlTexture2d,
GL10.GlTextureMagFilter, GL10.GlNearest);
gl.GlTexParameterf(GL10.GlTexture2d, GL10.GlTextureWrapS,
GL10.GlClampToEdge);
gl.GlTexParameterf(GL10.GlTexture2d, GL10.GlTextureWrapT,
GL10.GlClampToEdge);
}
}
if (DRAW_TEXTURE && mTexturePage.TexturesChanged)
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[0]);
Bitmap texture = mTexturePage.GetTexture(mTextureRectFront,
CurlPage.SIDE_FRONT);
GLUtils.TexImage2D(GL10.GlTexture2d, 0, texture, 0);
texture.Recycle();
mTextureBack = mTexturePage.HasBackTexture;
if (mTextureBack)
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[1]);
texture = mTexturePage.GetTexture(mTextureRectBack,
CurlPage.SIDE_BACK);
GLUtils.TexImage2D(GL10.GlTexture2d, 0, texture, 0);
texture.Recycle();
}
else
{
mTextureRectBack.Set(mTextureRectFront);
}
mTexturePage.Recycle();
Reset();
}
// Some 'global' settings.
gl.GlEnableClientState(GL10.GlVertexArray);
// TODO: Drop shadow drawing is done temporarily here to hide some
// problems with its calculation.
if (DRAW_SHADOW)
{
gl.GlDisable(GL10.GlTexture2d);
gl.GlEnable(GL10.GlBlend);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlColorPointer(4, GL10.GlFloat, 0, mBufShadowColors);
gl.GlVertexPointer(3, GL10.GlFloat, 0, mBufShadowVertices);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, mDropShadowCount);
gl.GlDisableClientState(GL10.GlColorArray);
gl.GlDisable(GL10.GlBlend);
}
if (DRAW_TEXTURE)
{
gl.GlEnableClientState(GL10.GlTextureCoordArray);
gl.GlTexCoordPointer(2, GL10.GlFloat, 0, mBufTexCoords);
}
gl.GlVertexPointer(3, GL10.GlFloat, 0, mBufVertices);
// Enable color array.
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlColorPointer(4, GL10.GlFloat, 0, mBufColors);
// Draw front facing blank vertices.
gl.GlDisable(GL10.GlTexture2d);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, mVerticesCountFront);
// Draw front facing texture.
if (DRAW_TEXTURE)
{
gl.GlEnable(GL10.GlBlend);
gl.GlEnable(GL10.GlTexture2d);
if (!mFlipTexture || !mTextureBack)
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[0]);
}
else
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[1]);
}
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, mVerticesCountFront);
gl.GlDisable(GL10.GlBlend);
gl.GlDisable(GL10.GlTexture2d);
}
int backStartIdx = Math.Max(0, mVerticesCountFront - 2);
int backCount = mVerticesCountFront + mVerticesCountBack - backStartIdx;
// Draw back facing blank vertices.
gl.GlDrawArrays(GL10.GlTriangleStrip, backStartIdx, backCount);
// Draw back facing texture.
if (DRAW_TEXTURE)
{
gl.GlEnable(GL10.GlBlend);
gl.GlEnable(GL10.GlTexture2d);
if (mFlipTexture || !mTextureBack)
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[0]);
}
else
{
gl.GlBindTexture(GL10.GlTexture2d, mTextureIds[1]);
}
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlDrawArrays(GL10.GlTriangleStrip, backStartIdx, backCount);
gl.GlDisable(GL10.GlBlend);
gl.GlDisable(GL10.GlTexture2d);
}
// Disable textures and color array.
gl.GlDisableClientState(GL10.GlTextureCoordArray);
gl.GlDisableClientState(GL10.GlColorArray);
if (DRAW_POLYGON_OUTLINES)
{
gl.GlEnable(GL10.GlBlend);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlLineWidth(1.0f);
gl.GlColor4f(0.5f, 0.5f, 1.0f, 1.0f);
gl.GlVertexPointer(3, GL10.GlFloat, 0, mBufVertices);
gl.GlDrawArrays(GL10.GlLineStrip, 0, mVerticesCountFront);
gl.GlDisable(GL10.GlBlend);
}
if (DRAW_CURL_POSITION)
{
gl.GlEnable(GL10.GlBlend);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlLineWidth(1.0f);
gl.GlColor4f(1.0f, 0.5f, 0.5f, 1.0f);
gl.GlVertexPointer(2, GL10.GlFloat, 0, mBufCurlPositionLines);
gl.GlDrawArrays(GL10.GlLines, 0, mCurlPositionLinesCount * 2);
gl.GlDisable(GL10.GlBlend);
}
if (DRAW_SHADOW)
{
gl.GlEnable(GL10.GlBlend);
gl.GlBlendFunc(GL10.GlSrcAlpha, GL10.GlOneMinusSrcAlpha);
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlColorPointer(4, GL10.GlFloat, 0, mBufShadowColors);
gl.GlVertexPointer(3, GL10.GlFloat, 0, mBufShadowVertices);
gl.GlDrawArrays(GL10.GlTriangleStrip, mDropShadowCount,
mSelfShadowCount);
gl.GlDisableClientState(GL10.GlColorArray);
gl.GlDisable(GL10.GlBlend);
}
gl.GlDisableClientState(GL10.GlVertexArray);
}
/// <summary>
/// Raises the draw frame event.
/// </summary>
/// <param name="gl">Gl.</param>
public void OnDrawFrame(IGL10 gl)
{
lock (_triangles)
{
// Replace the current matrix with the identity matrix
gl.GlMatrixMode(GL10.GlProjection);
gl.GlLoadIdentity(); // OpenGL docs
gl.GlOrthof(_left, _right, _bottom, _top, -1, 1);
SimpleColor color = SimpleColor.FromKnownColor(KnownColor.White);
gl.GlClearColor(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
gl.GlClear(GL10.GlColorBufferBit);
for (int idx = 0; idx < _triangles.Count; idx++)
{
gl.GlVertexPointer(3, GL10.GlFloat, 0, _triangles[idx].Vertices);
gl.GlEnableClientState(GL10.GlVertexArray);
gl.GlColorPointer(4, GL10.GlUnsignedByte, 0, _triangles[idx].Colors);
gl.GlEnableClientState(GL10.GlColorArray);
gl.GlDrawArrays(GL10.GlTriangleStrip, 0, _triangles[idx].Count);
}
for (int idx = 0; idx < _lines.Count; idx++)
{
gl.GlVertexPointer(3, GL10.GlFloat, 0, _lines[idx].Vertices);
gl.GlEnableClientState(GL10.GlVertexArray);
color = new SimpleColor()
{
Value = _lines[idx].Color
};
gl.GlColor4f(color.R / 255f, color.G / 255f, color.B / 255f, color.A / 255f);
gl.GlLineWidth(_lines[idx].Width);
gl.GlDrawArrays(GL10.GlLineStrip, 0, _lines[idx].Count);
}
}
}
