const int ReflectedObject::Draw( Camera* camera, GLShaderManager* shaderManager, TextureManager* textureManager, Light* light )
{
// Set the correct texture
glBindTexture( GL_TEXTURE_2D, textureFile );
// Matrices needed
M3DMatrix44f mCamera;
M3DMatrix44f mCameraRotOnly;
M3DMatrix44f mInverseCamera;
// Get the matrices from the camera
camera->cameraFrame.GetCameraMatrix(mCamera, false);
camera->cameraFrame.GetCameraMatrix(mCameraRotOnly, true);
m3dInvertMatrix44(mInverseCamera, mCameraRotOnly);
camera->modelViewMatrix.PushMatrix();
//Draw the sphere
camera->modelViewMatrix.MultMatrix( mCamera );
camera->modelViewMatrix.MultMatrix( frame );
glUseProgram( shaderFile );
glUniformMatrix4fv(locMVPReflect, 1, GL_FALSE, camera->transformPipeline.GetModelViewProjectionMatrix());
glUniformMatrix4fv(locMVReflect, 1, GL_FALSE, camera->transformPipeline.GetModelViewMatrix());
glUniformMatrix3fv(locNormalReflect, 1, GL_FALSE, camera->transformPipeline.GetNormalMatrix());
glUniformMatrix4fv(locInvertedCamera, 1, GL_FALSE, mInverseCamera);
glUniform1i(locCubeMap, 1);
glUniform1i(locTarnishMap, 0);
triBatch.Draw();
camera->modelViewMatrix.PopMatrix();
return SHR_SUCCESS;
}
// Called to draw scene
void RenderScene(void)
{
// Clear the window
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
frameCamera.ApplyCameraTransform(); // Move the camera about
// Sky Box is manually textured
glActiveTexture(GL_TEXTURE0);
glDisable(GL_TEXTURE_2D);
glActiveTexture(GL_TEXTURE1);
glEnable(GL_TEXTURE_CUBE_MAP);
glDisable(GL_TEXTURE_GEN_S);
glDisable(GL_TEXTURE_GEN_T);
glDisable(GL_TEXTURE_GEN_R);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL);
DrawSkyBox();
// Use texgen to apply cube map
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
glEnable(GL_TEXTURE_GEN_R);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glActiveTexture(GL_TEXTURE0);
glEnable(GL_TEXTURE_2D);
glPushMatrix();
glTranslatef(0.0f, 0.0f, -3.0f);
glActiveTexture(GL_TEXTURE1);
glMatrixMode(GL_TEXTURE);
glPushMatrix();
// Invert camera matrix (rotation only) and apply to
// texture coordinates
M3DMatrix44f m, invert;
frameCamera.GetCameraOrientation(m);
m3dInvertMatrix44(invert, m);
glMultMatrixf(invert);
glColor3f(1.0f, 1.0f, 1.0f);
gltDrawSphere(0.75f, 41, 41);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glPopMatrix();
// Do the buffer Swap
glutSwapBuffers();
}
void DrawGLScene() // Main Drawing Routine
{
GLmatrix16f Minv, Inv;
GLvector4f lp;
// Clear Color Buffer, Depth Buffer, Stencil Buffer
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glColor4f(0.7f, 0.4f, 0.0f, 1.0f);
glLoadIdentity();
glPushMatrix(); {
glTranslatef(0.0f, 0.0f, -20.0f); // Zoom Into Screen 20 Units
glLightfv(GL_LIGHT1, GL_POSITION, LightPos); // Position Light1
glTranslatef(SpherePos[0], SpherePos[1], SpherePos[2]); // Position The Sphere
gluSphere(q, 1.5f, 32, 16); // Draw A Sphere
} glPopMatrix();
glPushMatrix(); {
glTranslatef(0.0f, 0.0f, -20.0f); // Zoom Into The Screen 20 Units
DrawGLRoom(); // Draw The Room
glTranslatef(ObjPos[0], ObjPos[1], ObjPos[2]); // Position The Object
glRotatef(xrot, 1.0f, 0.0f, 0.0f); // Spin It On The X Axis By xrot
glRotatef(yrot, 0.0f, 1.0f, 0.0f); // Spin It On The Y Axis By yrot
DrawGLObject(obj); // Procedure For Drawing The Loaded Object
// 获得光源的位置(返回值是在视觉坐标系下的)
glGetLightfv(GL_LIGHT1, GL_POSITION, lp);
glGetFloatv(GL_MODELVIEW_MATRIX, Minv);
m3dInvertMatrix44(Inv, Minv);
// 把光源位置从视觉坐标系下变换到当前的场景坐标系(obj)下.
VMatMult(Inv, lp);
// 开始渲染阴影
CastShadow(&obj, lp);
// 用一个小黄球标记出光源的位置
glPushMatrix(); {
glColor4f(0.7f, 0.4f, 0.0f, 1.0f); // Set Color To Purplish Blue
glDisable(GL_LIGHTING); // Disable Lighting
glDepthMask(GL_FALSE); // Disable Depth Mask
glTranslatef(lp[0], lp[1], lp[2]);
gluSphere(q, 0.2f, 16, 8);
glEnable(GL_LIGHTING); // Enable Lighting
glDepthMask(GL_TRUE); // Enable Depth Mask
} glPopMatrix();
} glPopMatrix();
xrot += xspeed;
yrot += yspeed;
glFlush();
glutSwapBuffers();
}
// Called to draw scene
void RenderScene(void)
{
// Clear the window
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
M3DMatrix44f mCamera;
M3DMatrix44f mCameraRotOnly;
M3DMatrix44f mInverseCamera;
viewFrame.GetCameraMatrix(mCamera, false);
viewFrame.GetCameraMatrix(mCameraRotOnly, true);
m3dInvertMatrix44(mInverseCamera, mCameraRotOnly);
modelViewMatrix.PushMatrix();
// Draw the sphere
modelViewMatrix.MultMatrix(mCamera);
glUseProgram(reflectionShader);
glUniformMatrix4fv(locMVPReflect, 1, GL_FALSE, transformPipeline.GetModelViewProjectionMatrix());
glUniformMatrix4fv(locMVReflect, 1, GL_FALSE, transformPipeline.GetModelViewMatrix());
glUniformMatrix3fv(locNormalReflect, 1, GL_FALSE, transformPipeline.GetNormalMatrix());
glUniformMatrix4fv(locInvertedCamera, 1, GL_FALSE, mInverseCamera);
glUniform1i(locCubeMap, 0);
glUniform1i(locTarnishMap, 1);
glEnable(GL_CULL_FACE);
sphereBatch.Draw();
glDisable(GL_CULL_FACE);
modelViewMatrix.PopMatrix();
modelViewMatrix.PushMatrix();
modelViewMatrix.MultMatrix(mCameraRotOnly);
glUseProgram(skyBoxShader);
glUniformMatrix4fv(locMVPSkyBox, 1, GL_FALSE, transformPipeline.GetModelViewProjectionMatrix());
cubeBatch.Draw();
modelViewMatrix.PopMatrix();
// Do the buffer Swap
glutSwapBuffers();
}
// Called to draw scene objects
void DrawModels(void)
{
M3DVector3f lightPosEye;
M3DMatrix44f mv, mv2;
M3DMatrix44f mv2IT_4x4;
GLfloat mv2IT_3x3[9];
GLint i;
// Transform light position to eye space
glGetFloatv(GL_MODELVIEW_MATRIX, mv);
m3dTransformVector3(lightPosEye, lightPos, mv);
glUniform3fv(lightPosLoc, 1, lightPosEye);
// Setup modelview matrices for upper arm
glPushMatrix();
glRotatef(elbowBend, 0.0f, 0.0f, 1.0f);
glTranslatef(-50.0f, 0.0f, 0.0f);
glGetFloatv(GL_MODELVIEW_MATRIX, mv2);
glPopMatrix();
glTranslatef(-50.0f, 0.0f, 0.0f);
glUniformMatrix4fv(mv2Loc, 1, GL_FALSE, mv2);
m3dInvertMatrix44(mv2IT_4x4, mv2);
// Take upper left 3x3 for 2nd normal matrix
for (i = 0; i < 9; i++)
{
mv2IT_3x3[i] = mv2IT_4x4[((i/3)*4)+(i%3)];
}
glUniformMatrix3fv(mv2ITLoc, 1, GL_TRUE, mv2IT_3x3);
// Draw upper arm cylinder
glColor3f(0.0f, 0.0f, 0.90f); // Blue
// 50 long, 10 shoulder, 9 elbow, with weights applied to second half
DrawCylinder(50.0f, 15.0f, 9.0f, 1.0f, 0.5f);
// Setup modelview matrices for forearm
glTranslatef(50.0f, 0.0f, 0.0f);
glPushMatrix();
glGetFloatv(GL_MODELVIEW_MATRIX, mv2);
glPopMatrix();
glRotatef(elbowBend, 0.0f, 0.0f, 1.0f);
glUniformMatrix4fv(mv2Loc, 1, GL_FALSE, mv2);
m3dInvertMatrix44(mv2IT_4x4, mv2);
// Take upper left 3x3 for 2nd normal matrix
for (i = 0; i < 9; i++)
{
mv2IT_3x3[i] = mv2IT_4x4[((i/3)*4)+(i%3)];
}
glUniformMatrix3fv(mv2ITLoc, 1, GL_TRUE, mv2IT_3x3);
// Draw forearm cylinder
glColor3f(0.9f, 0.0f, 0.0f); // Red
// 40 long, 9 elbow, 5 wrist, with weights applied to first half
DrawCylinder(40.0f, 9.0f, 5.0f, 0.5f, 1.0f);
}
