| private glLightModelfv ( uint pname, float paramsx ) : void | ||
| pname | uint | |
| paramsx | float | |
| return | void | |
public cOGL(Control pb)
{
p = pb;
Width = p.Width;
Height = p.Height;
obj = GLU.gluNewQuadric();
InitializeGL();
//3 points of ground plane
ground[0, 0] = 1;
ground[0, 1] = 0;
ground[0, 2] = 0;
ground[1, 0] = -1;
ground[1, 1] = 0;
ground[1, 2] = 0;
ground[2, 0] = 0;
ground[2, 1] = 0;
ground[2, 2] = -1;
//light position
pos[0] = light_position[0] = ScrollValue[9];
pos[1] = light_position[1] = ScrollValue[10];
pos[2] = light_position[2] = ScrollValue[11];
pos[3] = light_position[3] = 0;
light_position_reflected[0] = -ScrollValue[9];
light_position_reflected[1] = -ScrollValue[10];
light_position_reflected[2] = -ScrollValue[11];
light_position_reflected[3] = 0;
GL.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT, light_ambient);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, light_diffuse);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_SPECULAR, light_specular);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, light_position);
GL.glLightfv(GL.GL_LIGHT1, GL.GL_AMBIENT, light_ambient);
GL.glLightfv(GL.GL_LIGHT1, GL.GL_DIFFUSE, light_diffuse);
GL.glLightfv(GL.GL_LIGHT1, GL.GL_SPECULAR, light_specular);
GL.glLightfv(GL.GL_LIGHT1, GL.GL_POSITION, light_position_reflected);
GL.glLightModelfv(GL.GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
}
/*
*
* Constructor
*
*/
public cOGL(Control pb)
{
p = pb;
Width = p.Width;
Height = p.Height;
InitializeGL();
obj = GLU.gluNewQuadric();
//Display lists declaration
TREE_LIST = GL.glGenLists(MAX_NUMBER_OF_TREES);
STEM_LIST = GL.glGenLists(MAX_NUMBER_OF_TREES);
LEAF_LIST = GL.glGenLists(MAX_NUMBER_OF_TREES);
//APPLE_LIST= GL.glGenLists(MAX_NUMBER_OF_TREES);
APPLE_LIST = GL.glGenLists(1);
STEM_AND_LEAVS_LIST = GL.glGenLists(MAX_NUMBER_OF_TREES);
TREE_MAT = GL.glGenLists(4);
LEAF_MAT = TREE_MAT + 1;
WATER_MAT = TREE_MAT + 3;
APPLE_MAT = TREE_MAT + 2;
//3 points of ground plane
ground[0, 0] = 1;
ground[0, 1] = 0f;
ground[0, 2] = 0;
ground[1, 0] = -1;
ground[1, 1] = 0f;
ground[1, 2] = 0;
ground[2, 0] = 0;
ground[2, 1] = 0f;
ground[2, 2] = -1;
//light position
pos[0] = light_position[0] = ScrollValue[9];
pos[1] = light_position[1] = ScrollValue[10];
pos[2] = light_position[2] = ScrollValue[11];
pos[3] = light_position[3] = 0;
//light0 default properties
GL.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT, light_ambient);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, light_diffuse);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_SPECULAR, light_specular);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, light_position);
GL.glLightModelfv(GL.GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
randX = new int[MAX_NUMBER_OF_TREES];
randZ = new int[MAX_NUMBER_OF_TREES];
locationX = new double[MAX_NUMBER_OF_TREES];
locationZ = new double[MAX_NUMBER_OF_TREES];
locationRotateY = new double[MAX_NUMBER_OF_TREES];
randX[0] = 0;
randZ[0] = 0;
//rand position for trees,or default value 0 for tree locations.
for (int i = 0; i < MAX_NUMBER_OF_TREES; i++)
{
randX[i] = rand.Next(-90, 90);
randZ[i] = rand.Next(-90, 90);
locationX[i] = 0;
locationZ[i] = 0;
locationRotateY[i] = 0;
}
}
/**********************************************************************************************************
*
*
*
* MAIN DRAW FUNCTION
*
*
*
**********************************************************************************************************/
public void Draw()
{
if (m_uint_DC == 0 || m_uint_RC == 0)
{
return;
}
GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT | GL.GL_STENCIL_BUFFER_BIT);
GL.glViewport(0, 0, Width, Height);
GL.glLoadIdentity();
GLU.gluLookAt(ScrollValue[0], ScrollValue[1], ScrollValue[2],
ScrollValue[3], ScrollValue[4], ScrollValue[5],
ScrollValue[6], ScrollValue[7], ScrollValue[8]);
GL.glRotatef(xAngle, 1.0f, 0.0f, 0.0f);
GL.glRotatef(yAngle, 0.0f, 1.0f, 0.0f);
GL.glRotatef(zAngle, 0.0f, 0.0f, 1.0f);
GL.glTranslatef(xShift, yShift, zShift);
pos[0] = light_position[0] = ScrollValue[9];
pos[1] = light_position[1] = ScrollValue[10];
pos[2] = light_position[2] = ScrollValue[11];
pos[3] = light_position[3] = 0;
GL.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT, light_ambient);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, light_diffuse);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_SPECULAR, light_specular);
GL.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, light_position);
GL.glLightModelfv(GL.GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
GL.glEnable(GL.GL_LIGHT0);
/*
*
* Reflection
*
*/
GL.glEnable(GL.GL_BLEND);
GL.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
if (reflectionOn)
{
//draw only to STENCIL buffer
GL.glEnable(GL.GL_STENCIL_TEST);
GL.glStencilOp(GL.GL_REPLACE, GL.GL_REPLACE, GL.GL_REPLACE);
GL.glStencilFunc(GL.GL_ALWAYS, 1, 0xFFFFFFFF);
GL.glColorMask((byte)GL.GL_FALSE, (byte)GL.GL_FALSE, (byte)GL.GL_FALSE, (byte)GL.GL_FALSE);
GL.glDisable(GL.GL_DEPTH_TEST);
drawLake();
// restore regular settings
GL.glColorMask((byte)GL.GL_TRUE, (byte)GL.GL_TRUE, (byte)GL.GL_TRUE, (byte)GL.GL_TRUE);
GL.glEnable(GL.GL_DEPTH_TEST);
// reflection is drawn only where STENCIL buffer value equal to 1
GL.glStencilFunc(GL.GL_EQUAL, 1, 0xFFFFFFFF);
GL.glStencilOp(GL.GL_KEEP, GL.GL_KEEP, GL.GL_KEEP);
/*
*
* draw reflected scene
*
*/
GL.glEnable(GL.GL_LIGHTING);
for (currentTree = 0; currentTree < numOfTrees; currentTree++)
{
GL.glPushMatrix();
//GL.glTranslated(randX[currentTree], 0,randZ[currentTree]);
GL.glTranslated(locationX[currentTree], 0, locationZ[currentTree]);
GL.glRotated(locationRotateY[currentTree], 0, 1, 0);
GL.glScalef(1, -1, 1); //swap on Z axis
if (scullFaceOn)
{
GL.glEnable(GL.GL_CULL_FACE);
GL.glCullFace(GL.GL_BACK);
GL.glCallList(TREE_LIST + currentTree);
GL.glCullFace(GL.GL_FRONT);
GL.glCallList(TREE_LIST + currentTree);
GL.glDisable(GL.GL_CULL_FACE);
}
else
{
GL.glCallList(TREE_LIST + currentTree);
}
GL.glPopMatrix();
}
drawLake();
GL.glStencilFunc(GL.GL_NOTEQUAL, 1, 0xFFFFFFFF);
GL.glStencilOp(GL.GL_KEEP, GL.GL_KEEP, GL.GL_KEEP);
// really draw floor
//( half-transparent ( see its color's alpha byte)))
// in order to see reflected objects
//GL.glDepthMask((byte)GL.GL_FALSE);
GL.glDepthMask((byte)GL.GL_TRUE);
if (!textureOn)
{
drawFloor();
}
else
{
drawFloorTextured();
DrawTexturedCube();
}
GL.glDisable(GL.GL_LIGHTING);
GL.glDisable(GL.GL_STENCIL_TEST);
}
else
{
GL.glEnable(GL.GL_LIGHTING);
drawLake();
if (!textureOn)
{
drawFloor();
}
else
{
drawFloorTextured();
DrawTexturedCube();
}
GL.glDisable(GL.GL_LIGHTING);
}
DrawLight();
/*
* Draw trees
*/
GL.glEnable(GL.GL_LIGHTING);
GL.glPushMatrix();
for (currentTree = 0; currentTree < numOfTrees; currentTree++)
{
GL.glPushMatrix();
//GL.glTranslated(randX[currentTree], 0, randZ[currentTree]);
GL.glTranslated(locationX[currentTree], 0, locationZ[currentTree]);
GL.glRotated(locationRotateY[currentTree], 0, 1, 0);
GL.glCallList(TREE_LIST + currentTree);
GL.glPopMatrix();
}
GL.glPopMatrix();
/*
* Draw trees shadows
*/
GL.glDisable(GL.GL_LIGHTING);
GL.glColor3d(0, 0, 0);
if (shadowOn)
{
GL.glPushMatrix();
MakeShadowMatrix(ground);
GL.glMultMatrixf(cubeXform);
for (currentTree = 0; currentTree < numOfTrees; currentTree++)
{
GL.glPushMatrix();
//GL.glTranslated(randX[currentTree], 0, randZ[currentTree]);
GL.glTranslated(locationX[currentTree], 0, locationZ[currentTree]);
GL.glRotated(locationRotateY[currentTree], 0, 1, 0);
GL.glCallList(TREE_LIST + currentTree);
GL.glPopMatrix();
}
GL.glPopMatrix();
}
GL.glFlush();
WGL.wglSwapBuffers(m_uint_DC);
}