void pool::init_object_matrix(int num_obj, GLfloat scale_coeff_x, GLfloat scale_coeff_y, GLfloat scale_coeff_z,
GLfloat translate_coeff_x, GLfloat translate_coeff_y, GLfloat translate_coeff_z,
GLfloat rotate_coeff_x, GLfloat rotate_coeff_z) {
float4x4 rotationMatrix, scaleMatrix, translateMatrix;
float4x4 transformMatrix1, transformMatrix2;
glusRotateRzRyRxf(rotationMatrix.L(), rotate_coeff_x, 0.0f, rotate_coeff_z);
glusScalef(scaleMatrix.L(), scale_coeff_x, scale_coeff_y, scale_coeff_z);
glusTranslatef(translateMatrix.L(), translate_coeff_x, translate_coeff_y, translate_coeff_z);
glusMultMatrixf(transformMatrix1.L(), rotationMatrix.L(), scaleMatrix.L());
glusMultMatrixf(object_matrix_[num_obj].L(), translateMatrix.L(), transformMatrix1.L());
glusInverseMatrixf(inversed_object_matrix_[num_obj].L(), object_matrix_[num_obj].L());
size_x_[num_obj] = (int) scale_coeff_x;
size_z_[num_obj] = (int) scale_coeff_z;
}
/**
* Function to render and display content.
*/
GLUSboolean update(GLUSfloat time)
{
// Angle for rotation
static GLfloat angle = 0.0f;
// Matrix for the model
GLfloat model[16];
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/clear.html
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Calculate the model matrix ...
glusLoadIdentityf(model);
glusRotateRzRyRxf(model, 45.0f, angle, 0.0f);
// ... and the view matrix ...
glusLookAtf(g_modelView, 0.0f, 0.0f, 5.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);
glusCopyMatrixf(g_inverseCamera, g_modelView, GLUS_TRUE);
glusInverseMatrixf(g_inverseCamera, g_inverseCamera);
// ... to get the final model view matrix
glusMultMatrixf(g_modelView, g_modelView, model);
// http://www.opengl.org/sdk/docs/man/xhtml/glUniform.xml
glUniformMatrix4fv(g_modelViewLocation, 1, GL_FALSE, g_modelView);
// http://www.opengl.org/sdk/docs/man/xhtml/glUniform.xml
glUniformMatrix4fv(g_inverseCameraLocation, 1, GL_FALSE, g_inverseCamera);
// http://www.opengl.org/sdk/docs/man/xhtml/glDrawElements.xml
glDrawElements(GL_TRIANGLES, 6 * 2 * 3, GL_UNSIGNED_INT, 0);
angle += 20.0f * time;
return GLUS_TRUE;
}
GLUSboolean update(GLUSfloat time)
{
try
{
static float elaspedTimeFromStart = 0;
elaspedTimeFromStart += 10*time;
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClearDepth(1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// make our program current
//
glUseProgram(g_program.program); CHECK_GL_ERRORS;
// Set shader variables.
// Note, that you can only assign shader variables (bind or set uiforms)
// if appropriate program was bind as current by glUseProgram.
//
setUniform(g_program.program, "g_screenWidth", g_width);
setUniform(g_program.program, "g_screenHeight", g_height);
setUniform(g_program.program, "g_bBoxMin", g_boxMin);
setUniform(g_program.program, "g_bBoxMax", g_boxMax);
setUniform(g_program.program, "g_bgColor", float4(0,0,1,0));
// Calc ray matrix. You should notice that rayMatrix is actually inverse of worldMatrix.
// Because if you do some transform with an object, you need to do inverse transform with the rays.
// Do not forget it please!
//
float4x4 rayMatrix;
float4x4 camRotMatrix, camTransMatrix;
glusLoadIdentityf(camRotMatrix.L());
glusLoadIdentityf(camTransMatrix.L());
glusRotateRzRyRxf(camRotMatrix.L(), -input.cam_rot[0], -input.cam_rot[1], 0.0f);
glusTranslatef(camTransMatrix.L(), g_camPos.x, g_camPos.y, g_camPos.z);
glusMultMatrixf(rayMatrix.L(), camRotMatrix.L(), camTransMatrix.L());
setUniform(g_program.program, "g_rayMatrix", rayMatrix);
// Now finally draw something
// disable depth and cull tests, because we just want to draw full screen quad
//
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glViewport(0, 0, g_width, g_height);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
g_pFullScreenQuad->Draw();
return GLUS_TRUE;
}
catch(std::runtime_error e)
{
std::cerr << e.what() << std::endl;
exit(-1);
}
catch(...)
{
std::cerr << "Unexpected Exception(render)!" << std::endl;
exit(-1);
}
}
/**
* Function for initialization.
*/
GLUSboolean init(GLUSvoid)
{
// Matrix for the model
GLfloat model[16];
GLUSshape cube;
GLUStgaimage image;
GLUStextfile vertexSource;
GLUStextfile fragmentSource;
// Load the source of the vertex shader.
glusLoadTextFile("../Example05/Vertex.vs", &vertexSource);
// Load the source of the fragment shader.
glusLoadTextFile("../Example05/Fragment.fs", &fragmentSource);
// Build and ...
glusBuildProgram(&g_program, (const GLUSchar**)&vertexSource.text, 0, (const GLUSchar**)&fragmentSource.text);
// Destroy the text resource
glusDestroyTextFile(&vertexSource);
// Destroy the text resource
glusDestroyTextFile(&fragmentSource);
// ToDo:
glGenVertexArrays(1, &g_vao);
// ToDo:
glBindVertexArray(g_vao);
glusCreateCubef(&cube, 0.5f);
numberIndices = cube.numberIndices;
// http://www.opengl.org/sdk/docs/man/xhtml/glGetUniformLocation.xml
g_projectionLocation = glGetUniformLocation(g_program.program, "projectionMatrix");
// http://www.opengl.org/sdk/docs/man/xhtml/glGetUniformLocation.xml
g_modelViewLocation = glGetUniformLocation(g_program.program, "modelViewMatrix");
// http://www.opengl.org/sdk/docs/man/xhtml/glGetUniformLocation.xml
g_textureLocation = glGetUniformLocation(g_program.program, "firstTexture");
// http://www.opengl.org/sdk/docs/man/xhtml/glGetAttribLocation.xml
g_vertexLocation = glGetAttribLocation(g_program.program, "vertex");
// http://www.opengl.org/sdk/docs/man/xhtml/glGetAttribLocation.xml
g_normalLocation = glGetAttribLocation(g_program.program, "normal");
// http://www.opengl.org/sdk/docs/man/xhtml/glGetAttribLocation.xml
g_texCoordLocation = glGetAttribLocation(g_program.program, "texCoord");
// ToDo:
glBindFragDataLocation(g_program.program, 0, "fragColor");
// http://www.opengl.org/sdk/docs/man/xhtml/glGenBuffers.xml
glGenBuffers(1, &g_vertices);
// http://www.opengl.org/sdk/docs/man/xhtml/glBindBuffer.xml
glBindBuffer(GL_ARRAY_BUFFER, g_vertices);
// http://www.opengl.org/sdk/docs/man/xhtml/glBufferData.xml
glBufferData(GL_ARRAY_BUFFER, cube.numberVertices*4*sizeof(GLfloat), (GLfloat*)cube.vertices, GL_STATIC_DRAW);
// http://www.opengl.org/sdk/docs/man/xhtml/glGenBuffers.xml
glGenBuffers(1, &g_normals);
// http://www.opengl.org/sdk/docs/man/xhtml/glBindBuffer.xml
glBindBuffer(GL_ARRAY_BUFFER, g_normals);
// http://www.opengl.org/sdk/docs/man/xhtml/glBufferData.xml
glBufferData(GL_ARRAY_BUFFER, cube.numberVertices*3*sizeof(GLfloat), (GLfloat*)cube.normals, GL_STATIC_DRAW);
// http://www.opengl.org/sdk/docs/man/xhtml/glGenBuffers.xml
glGenBuffers(1, &g_texCoords);
// http://www.opengl.org/sdk/docs/man/xhtml/glBindBuffer.xml
glBindBuffer(GL_ARRAY_BUFFER, g_texCoords);
// http://www.opengl.org/sdk/docs/man/xhtml/glBufferData.xml
glBufferData(GL_ARRAY_BUFFER, cube.numberVertices*2*sizeof(GLfloat), (GLfloat*)cube.texCoords, GL_STATIC_DRAW);
// http://www.opengl.org/sdk/docs/man/xhtml/glGenBuffers.xml
glGenBuffers(1, &g_indices);
// http://www.opengl.org/sdk/docs/man/xhtml/glBindBuffer.xml
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, g_indices);
// http://www.opengl.org/sdk/docs/man/xhtml/glBufferData.xml
glBufferData(GL_ELEMENT_ARRAY_BUFFER, cube.numberIndices*sizeof(GLuint), (GLuint*)cube.indices, GL_STATIC_DRAW);
glusDestroyShapef(&cube);
glusLoadTgaImage("crate.tga", &image);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/gentextures.html
glGenTextures(1, &g_texture);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/bindtexture.html
glBindTexture(GL_TEXTURE_2D, g_texture);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/teximage2d.html
glTexImage2D(GL_TEXTURE_2D, 0, image.format, image.width, image.height, 0, image.format, GL_UNSIGNED_BYTE, image.data);
glusDestroyTgaImage(&image);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/texparameter.html
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/texparameter.html
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/texparameter.html
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/texparameter.html
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
// http://www.opengl.org/sdk/docs/man/xhtml/glUseProgram.xml
glUseProgram(g_program.program);
// Calculate the model matrix ...
glusLoadIdentityf(model);
glusRotateRzRyRxf(model, 30.0f, 30.0f, 0.0f);
// ... and the view matrix ...
glusLookAtf(g_modelView, 0.0f, 0.0f, 5.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);
// ... to get the final model view matrix
glusMultMatrixf(g_modelView, g_modelView, model);
// http://www.opengl.org/sdk/docs/man/xhtml/glUniform.xml
glUniformMatrix4fv(g_modelViewLocation, 1, GL_FALSE, g_modelView);
// http://www.opengl.org/sdk/docs/man/xhtml/glBindBuffer.xml
glBindBuffer(GL_ARRAY_BUFFER, g_vertices);
// http://www.opengl.org/sdk/docs/man/xhtml/glVertexAttribPointer.xml
glVertexAttribPointer(g_vertexLocation, 4, GL_FLOAT, GL_FALSE, 0, 0);
// http://www.opengl.org/sdk/docs/man/xhtml/glEnableVertexAttribArray.xml
glEnableVertexAttribArray(g_vertexLocation);
// http://www.opengl.org/sdk/docs/man/xhtml/glBindBuffer.xml
glBindBuffer(GL_ARRAY_BUFFER, g_normals);
// http://www.opengl.org/sdk/docs/man/xhtml/glVertexAttribPointer.xml
glVertexAttribPointer(g_normalLocation, 3, GL_FLOAT, GL_FALSE, 0, 0);
// http://www.opengl.org/sdk/docs/man/xhtml/glEnableVertexAttribArray.xml
glEnableVertexAttribArray(g_normalLocation);
// http://www.opengl.org/sdk/docs/man/xhtml/glBindBuffer.xml
glBindBuffer(GL_ARRAY_BUFFER, g_texCoords);
// http://www.opengl.org/sdk/docs/man/xhtml/glVertexAttribPointer.xml
glVertexAttribPointer(g_texCoordLocation, 2, GL_FLOAT, GL_FALSE, 0, 0);
// http://www.opengl.org/sdk/docs/man/xhtml/glEnableVertexAttribArray.xml
glEnableVertexAttribArray(g_texCoordLocation);
// http://www.opengl.org/sdk/docs/man/xhtml/glUniform.xml
glUniform1i(g_textureLocation, 0);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/clearcolor.html
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
// http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/cleardepth.html
glClearDepth(1.0f);
//http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/enable.html
glEnable(GL_DEPTH_TEST);
//http://www.opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/enable.html
glEnable(GL_CULL_FACE);
return GLUS_TRUE;
}
