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| author | Dan Goodliffe <dan@randomdan.homeip.net> | 2021-01-17 19:36:30 +0000 |
|---|---|---|
| committer | Dan Goodliffe <dan@randomdan.homeip.net> | 2021-01-17 22:16:48 +0000 |
| commit | 0bf4ad9e4a9e1c97e92aa23a365405dfef89bd7c (patch) | |
| tree | 68a80976a247836bbb1eecc835af437e3489fbb7 /gfx/models/mesh.cpp | |
| parent | First cut modernizing and sanitizing (diff) | |
| download | ilt-0bf4ad9e4a9e1c97e92aa23a365405dfef89bd7c.tar.bz2 ilt-0bf4ad9e4a9e1c97e92aa23a365405dfef89bd7c.tar.xz ilt-0bf4ad9e4a9e1c97e92aa23a365405dfef89bd7c.zip | |
Big reshuffle
Fixes code quality warnings now picked up.
Diffstat (limited to 'gfx/models/mesh.cpp')
| -rw-r--r-- | gfx/models/mesh.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/gfx/models/mesh.cpp b/gfx/models/mesh.cpp new file mode 100644 index 0000000..8c304b3 --- /dev/null +++ b/gfx/models/mesh.cpp @@ -0,0 +1,75 @@ +#include "mesh.h"
+#include "obj_loader.h"
+#include "vertex.hpp"
+#include <glm/glm.hpp>
+#include <memory>
+#include <vector>
+
+Mesh::Mesh(const std::string & fileName) : Mesh(OBJModel(fileName).ToIndexedModel()) { }
+
+Mesh::Mesh(const IndexedModel & model) :
+ m_vertexArrayObject {}, m_vertexArrayBuffers {}, m_numIndices {model.indices.size()}
+{
+ glGenVertexArrays(1, &m_vertexArrayObject);
+ glBindVertexArray(m_vertexArrayObject);
+
+ glGenBuffers(NUM_BUFFERS, m_vertexArrayBuffers.data());
+
+ glBindBuffer(GL_ARRAY_BUFFER, m_vertexArrayBuffers[POSITION_VB]);
+ glBufferData(
+ GL_ARRAY_BUFFER, sizeof(model.positions[0]) * model.positions.size(), &model.positions[0], GL_STATIC_DRAW);
+ glEnableVertexAttribArray(0);
+ glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, nullptr);
+
+ glBindBuffer(GL_ARRAY_BUFFER, m_vertexArrayBuffers[TEXCOORD_VB]);
+ glBufferData(
+ GL_ARRAY_BUFFER, sizeof(model.texCoords[0]) * model.texCoords.size(), &model.texCoords[0], GL_STATIC_DRAW);
+ glEnableVertexAttribArray(1);
+ glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 0, nullptr);
+
+ glBindBuffer(GL_ARRAY_BUFFER, m_vertexArrayBuffers[NORMAL_VB]);
+ glBufferData(GL_ARRAY_BUFFER, sizeof(model.normals[0]) * model.normals.size(), &model.normals[0], GL_STATIC_DRAW);
+ glEnableVertexAttribArray(2);
+ glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, 0, nullptr);
+
+ glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_vertexArrayBuffers[INDEX_VB]);
+ glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(model.indices[0]) * model.indices.size(), &model.indices[0],
+ GL_STATIC_DRAW);
+
+ glBindVertexArray(0);
+}
+
+Mesh::Mesh(Vertex * vertices, unsigned int numVertices, unsigned int * indices, unsigned int numIndices) :
+ Mesh {[vertices, numVertices, indices, numIndices]() {
+ IndexedModel model;
+
+ for (unsigned int i = 0; i < numVertices; i++) {
+ model.positions.push_back(vertices[i].GetPos());
+ model.texCoords.push_back(vertices[i].GetTexCoord());
+ model.normals.push_back(vertices[i].GetNormal());
+ }
+
+ for (unsigned int i = 0; i < numIndices; i++) {
+ model.indices.push_back(indices[i]);
+ }
+
+ return model;
+ }()}
+{
+}
+
+Mesh::~Mesh()
+{
+ glDeleteBuffers(NUM_BUFFERS, m_vertexArrayBuffers.data());
+ glDeleteVertexArrays(1, &m_vertexArrayObject);
+}
+
+void
+Mesh::Draw()
+{
+ glBindVertexArray(m_vertexArrayObject);
+
+ glDrawElementsBaseVertex(GL_TRIANGLES, m_numIndices, GL_UNSIGNED_INT, nullptr, 0);
+
+ glBindVertexArray(0);
+}
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