// Here is the function that gets called each time the window needs to be redrawn.
// It is the "paint" method for our program, and is set up from the glutDisplayFunc in main
void render() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// New!
glUseProgram(shaderProgramID);
//theta = 0.01f;
scaleAmount = sin(theta);
// Fill the matrices with valid data
makeScale(scaleMatrix, 1.0f, 1.0f, 1.0f); // Fill the scaleMatrix variable
makeRotateY(rotYMatrix, theta); // Fill the rotYMatrix variable
//makeTranslate(transMatrix, -0.25f, -0.25f, -0.25f); // Fill the transMatrix to push the model back 1 "unit" into the scene
makeTranslate(V, 0.0f, 0.0f, -1.0f); // Fill the (V)iew matrix to push the world up 1 unit
// Multiply them together
//matrixMult4x4(M, transMatrix, rotYMatrix); // Order is important!
//matrixMult4x4(M, rotYMatrix, transMatrix); // This is backwards, unless you want orbiting!
matrixMult4x4(tempMatrix1, transMatrix, scaleMatrix); // Scale, then rotate...
matrixMult4x4(M, rotYMatrix, tempMatrix1); // ... then multiply THAT by the translate
// Important! Pass that data to the shader variables
//glUniformMatrix4fv(modelMatrixID, 1, GL_TRUE, M);
glUniformMatrix4fv(viewMatrixID, 1, GL_TRUE, V);
glUniformMatrix4fv(perspectiveMatrixID, 1, GL_TRUE, P);
glUniform3fv(emitterID, 1, emitter_pos);
/* Render Particles. Enabling point re-sizing in vertex shader */
glEnable (GL_PROGRAM_POINT_SIZE);
glEnable (GL_BLEND);
//glActiveTexture (GL_TEXTURE0);
//glBindTexture (GL_TEXTURE_2D, tex);
glUseProgram (shaderProgramID);
current_seconds=Timer();
/* update time in shaders */
glUniform1f (timeID, (GLfloat)current_seconds);
//glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
#ifdef USING_INDEX_BUFFER
glDrawElements (GL_TRIANGLES, NUM_INDICES, GL_UNSIGNED_INT, NULL);
#else
//glDrawArrays(GL_TRIANGLES, 0, NUM_VERTICES);
glBindVertexArray (vao);
// draw points 0-3 from the currently bound VAO with current in-use shader
glDrawArrays (GL_POINTS, 0, PARTICLE_COUNT);
glDisable (GL_BLEND);
glDisable (GL_PROGRAM_POINT_SIZE);
l=clock();
#endif
glutSwapBuffers();
glutPostRedisplay(); // NEW! This calls "render" again, allowing for animation!
}
// Here is the function that gets called each time the window needs to be redrawn.
// It is the "paint" method for our program, and is set up from the glutDisplayFunc in main
void render() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glUseProgram(shaderProgramID);
//theta = 0.01f;
scaleAmount = 0.8f; //sin(theta);
// Set the (M)odel matrix
makeScale(scaleMatrix, scaleAmount, scaleAmount, scaleAmount); // Fill the scaleMatrix variable
makeRotateY(rotYMatrix,0.5); // Fill the rotYMatrix variable
makeRotateX(rotXMatrix,0.0);
makeTranslate(transMatrix, 0.0f, 0.0f, -2.0f); // Fill the transMatrix to push the model back 1 "unit" into the scene
makeTranslate(transMatrix2, 0.0f, 0.0f, 0.0f);
// Multiply them together
matrixMult4x4(tempMatrix1,rotYMatrix, scaleMatrix); // Scale, then rotate...
matrixMult4x4(tempMatrix2,rotXMatrix,tempMatrix1);
matrixMult4x4(M, transMatrix, tempMatrix2); // ... then multiply THAT by the translate
// NEW! Copy the rotations into the allRotsMatrix
copyMatrix(rotYMatrix, allRotsMatrix);
// Set the (V)iew matrix if you want to "move" around the scene
makeTranslate(V, theta, gama, 0.0f);
// Important! Pass that data to the shader variables
glUniformMatrix4fv(modelMatrixID, 1, GL_TRUE, M);
glUniformMatrix4fv(viewMatrixID, 1, GL_TRUE, V);
glUniformMatrix4fv(perspectiveMatrixID, 1, GL_TRUE, P);
glUniformMatrix4fv(allRotsMatrixID, 1, GL_TRUE, allRotsMatrix);
glUniform4fv(lightID, 1, light);
//glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
#ifdef USING_INDEX_BUFFER
glDrawElements (GL_TRIANGLES, NUM_INDICES, GL_UNSIGNED_INT, NULL);
#else
glDrawArrays(GL_TRIANGLES, 0, NUM_VERTICES);
#endif
glutSwapBuffers();
glutPostRedisplay(); // This calls "render" again, allowing for animation!
}
Matrix4 Matrix4::makeTranslate(Vector3 a)
{
return makeTranslate(a[0], a[1], a[2]);
}
