allemang.d/toddcox-visualize
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separate vao for each kind of slice

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This commit is contained in:
David Allemang
2020-01-28 16:23:14 -05:00
parent c8955335e2
commit 3c629d6423
6 changed files with 157 additions and 34 deletions
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63
vis/src/main.cpp
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@@ -102,12 +102,35 @@ int main(int argc, char *argv[]) {
auto mirrors = mirror(group);
auto corners = plane_intersections(mirrors);
auto start = barycentric(corners, {1.00f, 0.1f, 0.01f, 0.01f});
// auto start = barycentric(corners, {1.0f, 1.0f, 1.0f, 1.0f});
auto start = barycentric(corners, {1.00f, 0.2f, 0.1f, 0.05f});
// auto start = barycentric(corners, {0.05f, 0.1f, 0.2f, 1.00f});
auto points = res.path.walk<glm::vec4, glm::vec4>(start, mirrors, reflect);
auto g_gens = gg.group_gens();
std::vector<int> sg_gens = {0, 1, 2};
const std::vector<int> simps = gg.tile(g_gens, sg_gens, gg.triangulate(sg_gens)).vals;
std::vector<GLuint> vaos;
std::vector<GLuint> ibos;
std::vector<unsigned> counts;
for (auto sg_gens : Combos(g_gens, 3)) {
const std::vector<int> data = gg.tile(g_gens, sg_gens, gg.triangulate(sg_gens)).vals;
GLuint vao = utilCreateVertexArray();
GLuint ibo = utilCreateBuffer();
unsigned count = data.size();
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, ibo);
glBufferData(GL_ARRAY_BUFFER, sizeof(int) * count, &data[0], GL_STATIC_DRAW);
glEnableVertexAttribArray(0);
glVertexAttribIPointer(0, 4, GL_INT, 0, nullptr);
glBindBuffer(GL_ARRAY_BUFFER, 0);
vaos.push_back(vao);
ibos.push_back(ibo);
counts.push_back(count);
}
//endregion
GLuint vbo;
@@ -119,30 +142,11 @@ int main(int argc, char *argv[]) {
GLuint ubo;
glGenBuffers(1, &ubo);
GLuint ibo;
glGenBuffers(1, &ibo);
glBindBuffer(GL_ARRAY_BUFFER, ibo);
glBufferData(GL_ARRAY_BUFFER, sizeof(int) * simps.size(), &simps[0], GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, vbo);
glBindBufferBase(GL_UNIFORM_BUFFER, 1, ubo);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, ibo);
glEnableVertexAttribArray(0);
glVertexAttribIPointer(0, 4, GL_INT, 0, nullptr);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindVertexArray(0);
std::cout << points.size() << " points" << std::endl;
std::cout << simps.size() << " simplexes" << std::endl;
while (!glfwWindowShouldClose(window)) {
int width, height;
glfwGetFramebufferSize(window, &width, &height);
@@ -156,11 +160,18 @@ int main(int argc, char *argv[]) {
glBufferData(GL_UNIFORM_BUFFER, sizeof(mats), &mats, GL_STATIC_DRAW);
glBindBuffer(GL_UNIFORM_BUFFER, 0);
glBindVertexArray(vao);
glBindProgramPipeline(pipe);
for (int i = 0; i < vaos.size(); ++i) {
auto c = glm::mix(
glm::vec3(.3, .2, .5),
glm::vec3(.9, .9, .95),
(float) (i + 1) / vaos.size()
);
glProgramUniform3f(fs, 2, 1.0f, 1.0f, 1.0f);
glDrawArrays(GL_POINTS, 0, simps.size() / 4);
glBindProgramPipeline(pipe);
glBindVertexArray(vaos[i]);
glProgramUniform3f(fs, 2, c.r, c.g, c.b);
glDrawArrays(GL_POINTS, 0, counts[i] / 4);
}
glBindProgramPipeline(0);
glBindVertexArray(0);