//------------------------------------------------------------------------------
static void
drawCageVertices() {
g_cageProgram.Use( );
glUniformMatrix4fv(g_cageProgram.GetUniformModelViewProjectionMatrix(),
1, GL_FALSE, g_transformData.ModelViewProjectionMatrix);
int numPoints = g_controlValues->GetNumVertices();
std::vector<float> vbo;
vbo.reserve(numPoints*6);
float * positions = g_controlValues->BindCpuBuffer();
float r, g, b;
for (int i = 0; i < numPoints; ++i) {
setSharpnessColor(g_coarseVertexSharpness[i], &r, &g, &b);
vbo.push_back(positions[i*3+0]);
vbo.push_back(positions[i*3+1]);
vbo.push_back(positions[i*3+2]);
vbo.push_back(r);
vbo.push_back(g);
vbo.push_back(b);
}
glBindVertexArray(g_cageVertexVAO);
glBindBuffer(GL_ARRAY_BUFFER, g_cageVertexVBO);
glBufferData(GL_ARRAY_BUFFER, (int)vbo.size() * sizeof(float), &vbo[0],
GL_STATIC_DRAW);
g_cageProgram.EnableVertexAttributes();
glPointSize(10.0f);
glDrawArrays(GL_POINTS, 0, numPoints);
glPointSize(1.0f);
glBindVertexArray(0);
glUseProgram(0);
}
//------------------------------------------------------------------------------
static void
drawCageEdges() {
g_cageProgram.Use( );
glUniformMatrix4fv(g_cageProgram.GetUniformModelViewProjectionMatrix(),
1, GL_FALSE, g_transformData.ModelViewProjectionMatrix);
std::vector<float> vbo;
vbo.reserve(g_coarseEdges.size() * 6);
float * positions = g_controlValues->BindCpuBuffer();
float r, g, b;
for (int i = 0; i < (int)g_coarseEdges.size(); i+=2) {
setSharpnessColor(g_coarseEdgeSharpness[i/2], &r, &g, &b);
for (int j = 0; j < 2; ++j) {
vbo.push_back(positions[g_coarseEdges[i+j]*3]);
vbo.push_back(positions[g_coarseEdges[i+j]*3+1]);
vbo.push_back(positions[g_coarseEdges[i+j]*3+2]);
vbo.push_back(r);
vbo.push_back(g);
vbo.push_back(b);
}
}
glBindVertexArray(g_cageEdgeVAO);
glBindBuffer(GL_ARRAY_BUFFER, g_cageEdgeVBO);
glBufferData(GL_ARRAY_BUFFER, (int)vbo.size() * sizeof(float), &vbo[0],
GL_STATIC_DRAW);
g_cageProgram.EnableVertexAttributes();
glDrawArrays(GL_LINES, 0, (int)g_coarseEdges.size());
glBindVertexArray(0);
glUseProgram(0);
}
//------------------------------------------------------------------------------
static void
drawStencils() {
g_samplesProgram.Use( );
glUniformMatrix4fv(g_cageProgram.GetUniformModelViewProjectionMatrix(),
1, GL_FALSE, g_transformData.ModelViewProjectionMatrix);
glBindVertexArray(g_stencilsVAO);
int numEdges = g_controlStencils->GetNumStencils() * 3;
g_samplesProgram.EnableVertexAttributes();
glBindBuffer(GL_ARRAY_BUFFER, g_stencilValues->BindVBO());
g_samplesProgram.EnableVertexAttributes();
glDrawArrays(GL_LINES, 0, numEdges*2);
glBindVertexArray(0);
glUseProgram(0);
}
