/// <summary>
/// Freezes the specified instance.
/// </summary>
/// <param name="gl">The gl instance.</param>
/// <param name="renderable">The renderable.</param>
public void Freeze(OpenGL gl, IRenderable renderable)
{
// Handle the trivial case.
if (isFrozen)
{
return;
}
// Create the display list.
if (displayList != null)
{
displayList.Delete(gl);
}
displayList = new DisplayList();
displayList.Generate(gl);
// Start the display list.
displayList.New(gl, DisplayList.DisplayListMode.Compile);
// Render the object.
renderable.Render(gl, RenderMode.Design);
// End the display list.
displayList.End(gl);
// We are now frozen.
isFrozen = true;
}
public static bool IsList(OpenGL gl, DisplayList displayList)
{
// Is the specified list a proper display list?
if (gl.IsList(displayList.list) == OpenGL.GL_TRUE)
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Creates the display list. This function draws the
/// geometry as well as compiling it.
/// </summary>
private void CreateDisplayList(OpenGL gl)
{
// Create the display list.
displayList = new DisplayList();
// Generate the display list and
displayList.Generate(gl);
displayList.New(gl, DisplayList.DisplayListMode.CompileAndExecute);
// Push all attributes, disable lighting and depth testing.
gl.PushAttrib(OpenGL.GL_CURRENT_BIT | OpenGL.GL_ENABLE_BIT |
OpenGL.GL_LINE_BIT | OpenGL.GL_DEPTH_BUFFER_BIT);
gl.Disable(OpenGL.GL_LIGHTING);
gl.Disable(OpenGL.GL_TEXTURE_2D);
gl.DepthFunc(OpenGL.GL_ALWAYS);
// Set a nice fat line width.
gl.LineWidth(1.50f);
// Draw the axies.
gl.Begin(OpenGL.GL_LINES);
gl.Color(1f, 0f, 0f, 1f);
gl.Vertex(0, 0, 0);
gl.Vertex(3, 0, 0);
gl.Color(0f, 1f, 0f, 1f);
gl.Vertex(0, 0, 0);
gl.Vertex(0, 3, 0);
gl.Color(0f, 0f, 1f, 1f);
gl.Vertex(0, 0, 0);
gl.Vertex(0, 0, 3);
gl.End();
// Restore attributes.
gl.PopAttrib();
// End the display list.
displayList.End(gl);
}
/// <summary>
/// Creates the display list. This function draws the
/// geometry as well as compiling it.
/// </summary>
public void CreateDisplayList(OpenGL gl, int x_largura, int y_profundidade, int z_altura)
{
//if (x_largura == 0 && y_profundidade == 0 && z_altura == 0)
//{
// x_largura = 10;
// y_profundidade = 7;
// z_altura = 4;
//}
// Create the display list.
displayList = new DisplayList();
// Generate the display list and
displayList.Generate(gl);
displayList.New(gl, DisplayList.DisplayListMode.CompileAndExecute);
// Push attributes, set the color.
gl.PushAttrib(OpenGL.GL_CURRENT_BIT | OpenGL.GL_ENABLE_BIT |
OpenGL.GL_LINE_BIT);
gl.Disable(OpenGL.GL_LIGHTING);
gl.Disable(OpenGL.GL_TEXTURE_2D);
gl.LineWidth(1.4f);
// Draw the grid lines.
gl.Begin(OpenGL.GL_LINES);
float x_inicial = x_largura / (float)2.0;
float y_inicial = y_profundidade / (float)2.0;
if (true)
{
//Base vertical
for (int i = -(int)x_inicial; i <= x_largura - x_inicial; i++)
{
try
{
float fcol = ((i % (x_largura / (float)2.0)) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
}
catch (Exception) { }
gl.Vertex(i, -y_inicial, 0);
gl.Vertex(i, y_profundidade - y_inicial, 0);
}
//Base horizontal
for (int i = -(int)y_inicial; i <= y_profundidade - y_inicial; i++)
{
try
{
float fcol = ((i % (x_largura / (float)2.0)) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
}
catch (Exception) { }
gl.Vertex(-x_inicial, i, 0);
gl.Vertex(x_largura - x_inicial, i, 0);
}
//Parede direita horizontal
for (int i = 0; i <= z_altura; i++)
{
try
{
float fcol = ((i % (z_altura / (float)2.0)) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
}
catch (Exception) { }
gl.Vertex(x_largura - x_inicial, -y_inicial, i);
gl.Vertex(x_largura - x_inicial, y_profundidade - y_inicial, i);
}
//Parede esquerda horizontal
for (int i = 0; i <= z_altura; i++)
{
try
{
float fcol = ((i % (z_altura / (float)2.0)) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
}
catch (Exception) { }
gl.Vertex(-x_inicial, y_profundidade - y_inicial, i);
gl.Vertex(x_largura - x_inicial, y_profundidade - y_inicial, i);
}
//Parede direita vertical
for (int i = -(int)y_inicial; i <= y_profundidade - y_inicial; i++)
{
try
{
float fcol = ((i % (x_largura / (float)2.0)) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
}
catch (Exception) { }
gl.Vertex(x_largura - x_inicial, i, 0);
gl.Vertex(x_largura - x_inicial, i, z_altura);
}
//Parede esquerda vertical
for (int i = -(int)x_inicial; i <= x_largura - x_inicial; i++)
{
try
{
float fcol = ((i % (x_largura / (float)2.0)) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
}
catch (Exception) { }
gl.Vertex(i, y_profundidade - y_inicial, 0);
gl.Vertex(i, y_profundidade - y_inicial, z_altura);
}
}
else
{
int minimum_base_value = -7;
int maximum_base_value = 7;
int minimum_height_value = 0;
int maximum_height_value = 4;
for (int i = minimum_base_value; i <= maximum_base_value; i++)
{
float fcol = ((i % maximum_base_value) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
gl.Vertex(i, minimum_base_value, 0);
gl.Vertex(i, maximum_base_value, 0);
gl.Vertex(minimum_base_value, i, 0);
gl.Vertex(maximum_base_value, i, 0);
}
for (int i = minimum_height_value; i <= maximum_base_value + maximum_base_value; i++)
{
float fcol = ((i % maximum_base_value) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
gl.Vertex(maximum_base_value, i - maximum_base_value, minimum_height_value);
gl.Vertex(maximum_base_value, i - maximum_base_value, maximum_height_value);
if (i <= maximum_height_value)
{
gl.Vertex(maximum_base_value, minimum_base_value, i);
gl.Vertex(maximum_base_value, maximum_base_value, i);
}
}
for (int i = minimum_height_value; i <= maximum_base_value + maximum_base_value; i++)
{
float fcol = ((i % maximum_base_value) == 0) ? 0.3f : 0.15f;
gl.Color(fcol, fcol, fcol);
gl.Vertex(i - maximum_base_value, maximum_base_value, minimum_height_value);
gl.Vertex(i - maximum_base_value, maximum_base_value, maximum_height_value);
if (i <= maximum_height_value)
{
gl.Vertex(minimum_base_value, maximum_base_value, i);
gl.Vertex(maximum_base_value, maximum_base_value, i);
}
}
}
gl.End();
// Restore attributes.
gl.PopAttrib();
// End the display list.
displayList.End(gl);
}