void Draw(GLContext *_context)
{
UserData *_user = (UserData *)_context->userObject;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//very important
//draw earth
_user->object->enableObject();
glBindBuffer(GL_ARRAY_BUFFER, _user->positionVertexBufferId);
glEnableVertexAttribArray(0);//position
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), NULL);
glBindBuffer(GL_ARRAY_BUFFER, _user->texCoordVertexBufferId);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float), NULL);
glBindBuffer(GL_ARRAY_BUFFER, _user->normalVertexBufferId);
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), NULL);
//
ESMatrix mvMatrix;
esMatrixLoadIdentity(&mvMatrix);
esTranslate(&mvMatrix, 0.0f, 0.0f, -5.0f);
esRotate(&mvMatrix, 17.7f , 1.0f, 0.0f, 0.0f);
esRotate(&mvMatrix, _user->earthAngle, 0.0f, 1.0f, 0.0f);
glUniformMatrix4fv(_user->mvLoc, 1, GL_FALSE,(float*)mvMatrix.m);//mv matrix
ESMatrix projMatrix, mvpMatrix;
esMatrixLoadIdentity(&projMatrix);
esOrtho(&projMatrix, -1.0f, 1.0f, -1.0f, 1.0f, -10.0f, 10.0f);
esMatrixMultiply(&mvpMatrix, &mvMatrix, &projMatrix);
glUniformMatrix4fv(_user->mvpLoc, 1, GL_FALSE, (float *)mvpMatrix.m);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, _user->earthMapId);
glUniform1i(_user->baseMapLoc, 0);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDrawArrays(GL_TRIANGLES, 0, sphereNumVerts);
//画出月球
_user->object->enableObject();
glBindBuffer(GL_ARRAY_BUFFER, _user->positionVertexBufferId);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), NULL);
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2 * sizeof(float), GL_FLOAT, GL_FALSE, 2 * sizeof(float), NULL);
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), NULL);
esMatrixLoadIdentity(&mvMatrix);
esTranslate(&mvMatrix, 0.0f, 0.0f, -5.0f);
esScale(&mvMatrix, 0.25f, 0.25f, 0.25f);
esRotate(&mvMatrix, 17.7f, 1.0f, 0.0f, 0.0f);
esRotate(&mvMatrix, _user->moonAngle, 0.0f, 1.0f, 0.0f);
esTranslate(&mvMatrix, 4.0f, 0.0f, 0.0f);
glUniformMatrix4fv(_user->mvLoc, 1, GL_FALSE, (float*)mvMatrix.m);
esMatrixLoadIdentity(&projMatrix);
esOrtho(&projMatrix, -1.0f, 1.0f, -1.0f, 1.0f, -10.0f, 10.0f);
esMatrixMultiply(&mvpMatrix, &mvMatrix, &projMatrix);
glUniformMatrix4fv(_user->mvpLoc, 1, GL_FALSE, (float*)mvpMatrix.m);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, _user->moonMapId);
glUniform1i(_user->baseMapLoc, 0);
glBlendFunc(GL_ONE, GL_ZERO);
glDrawArrays(GL_TRIANGLES, 0, sphereNumVerts);
}
void updateCamera(){
// BT_PROFILE("updateCamera");
// btScalar rele = m_ele * btScalar(0.01745329251994329547);// rads per deg
// btScalar razi = m_azi * btScalar(0.01745329251994329547);// rads per deg
//
//
// btQuaternion rot(m_cameraUp,razi);
//
//
// btVector3 eyePos(0,0,0);
// eyePos[m_forwardAxis] = -m_cameraDistance;
//
// LOGI("eyepos1 is %f,%f,%f",eyePos.getX(),eyePos.getY(),eyePos.getZ());
// btVector3 forward(eyePos[0],eyePos[1],eyePos[2]);
// if (forward.length2() < SIMD_EPSILON)
// not executed
// {
// forward.setValue(1.f,0.f,0.f);
// }
// btVector3 right = m_cameraUp.cross(forward);
// btQuaternion roll(right,-rele);
//
// eyePos = btMatrix3x3(rot) * btMatrix3x3(roll) * eyePos;
//
// m_cameraPosition[0] = eyePos.getX();
// m_cameraPosition[1] = eyePos.getY();
// m_cameraPosition[2] = eyePos.getZ();
//
//// LOGI("eyepos2 is %f,%f,%f",eyePos.getX(),eyePos.getY(),eyePos.getZ());
// m_cameraPosition += m_cameraTargetPosition;
//
// if (m_glutScreenWidth == 0 && m_glutScreenHeight == 0)
// return;
//
btScalar aspect;
btVector3 extents;
aspect = m_glutScreenWidth / (btScalar)m_glutScreenHeight;
extents.setValue(aspect * 1.0f, 1.0f,0);
if (m_ortho)
{
// not executed
extents *= m_cameraDistance;
btVector3 lower = m_cameraTargetPosition - extents;
btVector3 upper = m_cameraTargetPosition + extents;
// gluOrtho2D(lower.x, upper.x, lower.y, upper.y);
esOrtho(&projMat,lower.getX(), upper.getX(), lower.getY(), upper.getY(),-1000,1000);
// glOrthof(lower.getX(), upper.getX(), lower.getY(), upper.getY(),-1000,1000);
LOGI("ORTHO");
} else
{
// esFrustum(&projMat, -aspect * 1.0f, aspect * 1.0f, 1.0f, -1.0f, 1.0f, 200.0f);
// esMatrixLookAt(&viewMat,
// m_cameraPosition[0], m_cameraPosition[1], m_cameraPosition[2],
// m_cameraTargetPosition[0], m_cameraTargetPosition[1], m_cameraTargetPosition[2],
// m_cameraUp.getX(),m_cameraUp.getY(),m_cameraUp.getZ());
esFrustum(&projMat, -aspect, aspect, -1.0f, 1.0f, 1.0f, 1000.0f);
esMatrixLookAt(&viewMat,
0.0f, 100.0f, 20.0f,
0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f);
}
}
bool setupGraphics(int w, int h)
{
printGLString("Version", GL_VERSION);
printGLString("Vendor", GL_VENDOR);
printGLString("Renderer", GL_RENDERER);
printGLString("Extensions", GL_EXTENSIONS);
LOGI("setupGraphics(%d, %d)", w, h);
gProgram = createProgram(gVertexShader, gFragmentShader);
if (!gProgram) {
LOGE("Could not create program.");
return false;
}
gvPositionHandle = glGetAttribLocation(gProgram, "vPosition");
gShaderTexCoord = glGetAttribLocation ( gProgram, "a_texCoord" );
gvpMatrix = glGetUniformLocation( gProgram, "u_TransMatrix" );
gShaderImgTexture = glGetUniformLocation( gProgram, "s_ImgTexture" );
makeCheckImages();
glGenTextures( 1, &texName );
glBindTexture(GL_TEXTURE_2D, texName);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE );
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth,
checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE,
checkImage);
glUseProgram(gProgram);
glEnableVertexAttribArray(gvPositionHandle);
glEnableVertexAttribArray( gShaderTexCoord );
glUniform1i ( gShaderImgTexture, 0 );
gWidthd2 = w / 2;
gHeightd2 = h / 2;
esMatrixLoadIdentity( &gOrthographic );
//esOrtho(&gOrthographic, 0, mWidth, -mHeight, 0, 5.0f, -5.0f );
esOrtho(&gOrthographic, -gWidthd2, gWidthd2, -gHeightd2, gHeightd2, 5.0f, -5.0f );
ESMatrix modelview;
esMatrixLoadIdentity( &gMatrix );
esMatrixLoadIdentity( &modelview );
esMatrixMultiply( &gMatrix, &modelview, &gOrthographic );
glViewport(0, 0, w, h);
glUniformMatrix4fv( gvpMatrix, 1, GL_FALSE, (GLfloat *)&gMatrix );
//glGenBuffers( 1, &guVbo );
//glBindBuffer( GL_ARRAY_BUFFER, guVbo );
//glBufferData( GL_ARRAY_BUFFER, 5 * 6 * sizeof( GLfloat), gTriangleVertices, GL_STREAM_DRAW );
glActiveTexture ( GL_TEXTURE0 );
glBindTexture ( GL_TEXTURE_2D, texName );
createRenderBuffer();
//ESMatrix matrixTrans;
//ESMatrix modelview;
//esMatrixLoadIdentity( &modelview );
//esTranslate( &modelview, -fx, fy, 0.0 );
//esMatrixMultiply( &matrixTrans, &modelview, &gOrthographic );
glUniformMatrix4fv( gvpMatrix, 1, GL_FALSE, (GLfloat *)&gOrthographic );
return true;
}
