void TP1::Draw(){
// efface le color buffer
glClearColor(0.0f, 0.0f, 0.0f, 1.f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
GLuint programObject = shader.GetProgram();
glUseProgram(programObject);
projectionMatrix = esgiOrtho(0.f, WINDOW_WIDTH, 0.f, WINDOW_HEIGHT, 0.f, 1.f);
GLint projectionUniform = glGetUniformLocation(programObject, "u_ProjectionMatrix");
glUniformMatrix4fv(projectionUniform, 1, 0, &projectionMatrix.I.x);
sprite.Render(programObject);
glutSwapBuffers();
glutPostRedisplay();
}
// Draw Method
void Draw()
{
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glClearColor(0.3f, 0.3f, 0.3f, 1.f);
glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT);
GLint projection_uniform;
GLint world_uniform;
mat4 projectionMatrix = esgiOrtho(0.f, 800.f, 600.f, 0.f, 0.f, 1.f);
GLint position_attr;
GLint texcoord_attr;
GLint sampler_uniform;
float angle = 0.f;
mat4 worldMatrix;
worldMatrix.Identity();
worldMatrix = esgiRotateZ(angle);
worldMatrix.I.x = 800.f / 1.6f;
worldMatrix.J.y = 600.f /1.6f;
/**
* Draw Sky - Start
*/
programObject = shaders.UseShader("Sky");
position_attr = glGetAttribLocation(programObject, "a_Position");
texcoord_attr = glGetAttribLocation(programObject, "a_TexCoords");
projection_uniform = glGetUniformLocation(programObject, "u_ProjectionMatrix");
world_uniform = glGetUniformLocation(programObject, "u_WorldMatrix");
glVertexAttribPointer(position_attr, 3, GL_FLOAT, false, sizeof(Vertex), vertices);
glVertexAttribPointer(texcoord_attr, 2, GL_FLOAT, false, sizeof(Vertex), &vertices[0].texcoords);
glEnableVertexAttribArray(position_attr);
glEnableVertexAttribArray(texcoord_attr);
glUniformMatrix4fv(projection_uniform, 1, false, &projectionMatrix.I.x);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, textures["Sky"]);
sampler_uniform = glGetUniformLocation(programObject, "u_Texture");
glUniform1i(sampler_uniform, 0);
worldMatrix.T.set(400.f, 300.f, 0.f, 1.0f);
glUniformMatrix4fv(world_uniform, 1, false, &worldMatrix.I.x);
glDrawArrays(GL_TRIANGLES, 0, VertexCount);
glDisableVertexAttribArray(position_attr);
glDisableVertexAttribArray(texcoord_attr);
shaders.UnUseShader("sky");
/**
* Draw Sky - End
*/
/**
* Draw Clouds - Start
*/
programObject = shaders.UseShader("Clouds");
position_attr = glGetAttribLocation(programObject, "a_Position");
texcoord_attr = glGetAttribLocation(programObject, "a_TexCoords");
projection_uniform = glGetUniformLocation(programObject, "u_ProjectionMatrix");
world_uniform = glGetUniformLocation(programObject, "u_WorldMatrix");
GLint time_uniform = glGetUniformLocation(programObject, "u_Time");
glVertexAttribPointer(position_attr, 3, GL_FLOAT, false, sizeof(Vertex), vertices);
glVertexAttribPointer(texcoord_attr, 2, GL_FLOAT, false, sizeof(Vertex), &vertices[0].texcoords);
glUniformMatrix4fv(projection_uniform, 1, false, &projectionMatrix.I.x);
glEnableVertexAttribArray(position_attr);
glEnableVertexAttribArray(texcoord_attr);
glUniform1f(time_uniform, t);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, textures["Clouds"]);
sampler_uniform = glGetUniformLocation(programObject, "u_Texture");
glUniform1i(sampler_uniform, 0);
worldMatrix.T.set(400.f, 300.f, 0.f, 1.0f);
glUniformMatrix4fv(world_uniform, 1, false, &worldMatrix.I.x);
glDrawArrays(GL_TRIANGLES, 0, VertexCount);
glDisableVertexAttribArray(position_attr);
glDisableVertexAttribArray(texcoord_attr);
shaders.UnUseShader("Clouds");
/**
* Draw Clouds - End
*/
/**
* Draw Particle - Start
*/
programObject = shaders.UseShader("Particle");
position_attr = glGetAttribLocation(programObject, "a_Position");
texcoord_attr = glGetAttribLocation(programObject, "a_TexCoords");
projection_uniform = glGetUniformLocation(programObject, "u_ProjectionMatrix");
world_uniform = glGetUniformLocation(programObject, "u_WorldMatrix");
glVertexAttribPointer(position_attr, 3, GL_FLOAT, false, sizeof(Vertex), vertices);
glVertexAttribPointer(texcoord_attr, 2, GL_FLOAT, false, sizeof(Vertex), &vertices[0].texcoords);
GLint ttl_uniform = glGetUniformLocation(programObject, "u_ttl");
GLint ttl_max_uniform = glGetUniformLocation(programObject, "u_ttl_max");
GLint dir_uniform = glGetUniformLocation(programObject, "u_dir");
glUniformMatrix4fv(projection_uniform, 1, false, &projectionMatrix.I.x);
glEnableVertexAttribArray(position_attr);
glEnableVertexAttribArray(texcoord_attr);
for(int i = 0; i < ParticleEmiters.size(); i++)
{
for(int j = 0; j < ParticleEmiters[i].nbParticle; j++)
{
if(ParticleEmiters[i].particles[j].living == true && ParticleEmiters[i].particles[j].emited == true )
{
glUniform1f(ttl_uniform, ParticleEmiters[i].particles[j].ttlCurr);
glUniform1f(ttl_max_uniform, ParticleEmiters[i].particles[j].ttlMax);
glUniform3f(dir_uniform, ParticleEmiters[i].particles[j].direction.x, ParticleEmiters[i].particles[j].direction.y, ParticleEmiters[i].particles[j].direction.z);
if(ParticleEmiters[i].particles[j].type == 1)
drawParticle(ParticleEmiters[i].particles[j].position, programObject, sampler_uniform, worldMatrix, world_uniform, textures["Fireworks"]);
if(ParticleEmiters[i].particles[j].type == 2)
drawParticle(ParticleEmiters[i].particles[j].position, programObject, sampler_uniform, worldMatrix, world_uniform, textures["Water"]);
}
}
}
glDisableVertexAttribArray(position_attr);
glDisableVertexAttribArray(texcoord_attr);
shaders.UnUseShader("Particle");
/**
* Draw Clouds - End
*/
}