Graves::Graves(int mode,int numgraves,GLuint *tex,Terrain *map,GLGeometryTransform *pGLGTin,Camera *camIn)
{
clones = numgraves;
graveFrame = new GLFrame[clones];
char* fname = "grave";
this->multi = true;
numParts = Loaders::uwsmMultiCheck(fname);
mesh = new MyTBatch[numParts];
Vec3 tmax,tmin;
Loaders::uwsmMultiLoad(fname,mesh,&tmax,&tmin);
this->max = tmax;
this->min = tmin;
theTerrain = map;
this->pGLGT = pGLGTin;
this->myTex = tex;
this->scaleValue=1.0f;
this->radius = 0.4f;
this->ptype = 0;
this->theCam = camIn;
this->mode = mode;
myS = new Shader(camIn,"Shaders/nospec.vert","Shaders/nospec.frag",&myTex[0]);
m3dRotationMatrix44(mx4,D2R*90,0.0,1.0,0.0);
m3dExtractRotationMatrix33(mx3,mx4);
setup();
}
void Transform::Rotate( float angle, float x, float y, float z )
{
M3DMatrix44f _rotmatrix;
m3dRotationMatrix44( _rotmatrix, angle, x, y, z );
M3DMatrix44f _source;
m3dCopyMatrix44(_source, _matrix);
m3dMatrixMultiply44(_matrix, _source, _rotmatrix);
}
// Called to draw scene
void RenderScene(void)
{
M3DMatrix44f transformationMatrix; // Storeage for rotation matrix
static GLfloat yRot = 0.0f; // Rotation angle for animation
yRot += 0.5f;
// Clear the window with current clearing color
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Build a rotation matrix
m3dRotationMatrix44(transformationMatrix, m3dDegToRad(yRot), 0.0f, 1.0f, 0.0f);
transformationMatrix[12] = 0.0f;
transformationMatrix[13] = 0.0f;
transformationMatrix[14] = -2.5f;
DrawTorus(transformationMatrix);
// Do the buffer Swap
glutSwapBuffers();
}
void MouseMoveEvent(int x, int y)
{
if (isStartTrackBall)
{
GLfloat theta;
M3DVector3f p1, p2, n;
int width = glutGet(GLUT_WINDOW_WIDTH);
int height = glutGet(GLUT_WINDOW_HEIGHT);
MousePtToSphereVec(p1, mMouseX, mMouseY, width, height);
MousePtToSphereVec(p2, x, y, width, height);
mMouseX = x;
mMouseY = y;
m3dNormalizeVector3(p1);
m3dNormalizeVector3(p2);
theta = acos(m3dDotProduct3(p1, p2)) ;
//theta = m3dGetAngleBetweenVectors3(p1, p2);
m3dCrossProduct3(n, p1, p2);
m3dNormalizeVector3(n);
M3DMatrix44f tempRotation;
m3dLoadIdentity44(tempRotation);
GLfloat dis = m3dGetDistance3(p1, p2);
if (dis != 0.0f)
{
m3dRotationMatrix44(tempRotation, theta, m3dGetVectorX(n), m3dGetVectorY(n), m3dGetVectorZ(n));
}
m3dMatrixMultiply44(mRotation, tempRotation, mRotation);
glutPostRedisplay();
}
}
void SceneShader()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
GLfloat VColor[] = {0.25f,0.25f,0.25f,1.0f};
M3DMatrix44f RotationMatrix;
Rot += 1.0f;
//get the Rotation Matrix
//m3dDegToRad: translate angle to radian
m3dRotationMatrix44(RotationMatrix, m3dDegToRad(Rot), 0.0f, 0.0f, 1.0f);
//use the flat shader
shaderManager.UseStockShader(GLT_SHADER_FLAT, RotationMatrix ,VColor);
SquareRotationBatch.Draw();
// Swap buffers, and immediately refresh
glutSwapBuffers();
glutPostRedisplay();
}
void RenderScence(void)
{
static CStopWatch rotTimer;
float yRot = rotTimer.GetElapsedSeconds() * 60.0f;//每秒旋转60度？
//Clear the window and the depth buffer
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
M3DMatrix44f mTranslate, mRotate, mModelView, mModelViewProjection;
//生成一个平移矩阵，用于将花环移回视野中，有个问题，1.0f会是什么效果？1.0会看不见花托。有可能截头体是世界坐标1.0-1000.0f是指距离camera的。所以此矩阵是相对于摄像机的操作，移到摄像机面前2.5f深度距离处
//即摄像机所在的地方为原点（0，0，0）
m3dTranslationMatrix44(mTranslate, 0.0f, 0.0f, -2.5f);
//生成旋转矩阵 以y为轴，旋转时间t产生的旋转角 yRot
m3dRotationMatrix44(mRotate, m3dDegToRad(yRot), 0.0f, 1.0f, 0.0f);
//组合为模型变换矩阵，而原模型矩阵在最右边，即先旋转再平移 ？
m3dMatrixMultiply44(mModelView, mTranslate, mRotate);
//组合成模型投影矩阵，而原模型矩阵在最右边，先做模型变换再投影 ？
m3dMatrixMultiply44(mModelViewProjection, viewFrustum.GetProjectionMatrix(), mModelView);
GLfloat vBlack[] = { 1.0f, 1.0f, 1.0f, 1.0f };
//选择要配置的渲染操作类型,非smooth，每种模式对应的参数要熟悉才能正确使用
shaderManger.UseStockShader(GLT_SHADER_FLAT, mModelViewProjection, vBlack);//黑色背景？不是，是设置当前画笔颜色
torusBatch.Draw();
glutSwapBuffers();
glutPostRedisplay();
//整个流程是：先旋转在平移，然后进行投影剪裁，最后光栅化。UseStockShader 和draw函数之前的变换管线还是不清晰
}
