Added generation of boxes and cylinders (needs tweaking, though)
Martin Felis
parent
ef89ac43fc
commit
507b475539
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@ -937,6 +937,165 @@ void mesh_load(Mesh* mesh, const void* _vertices, uint32_t _numVertices, const b
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// return result;
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// }
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Mesh *createMeshFromStdVectors (
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const std::vector<Vector4f> &vertices,
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const std::vector<Vector3f> &normals,
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const std::vector<Vector4f> &colors
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) {
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// create and copy the data into the actual mesh
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Mesh* result = new Mesh();
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PosNormalColorVertex::init();
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bool have_normals = normals.size() > 0;
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bool have_colors = colors.size() > 0;
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uint16_t stride = PosNormalColorVertex::ms_decl.getStride();
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const bgfx::Memory* vb_mem = bgfx::alloc (vertices.size() * stride);
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PosNormalColorVertex* mesh_vb = (PosNormalColorVertex*) vb_mem;
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const bgfx::Memory* ib_mem = bgfx::alloc (sizeof(uint16_t) * vertices.size());
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uint16_t* mesh_ib = (uint16_t*) ib_mem;
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for (unsigned int i = 0; i < vertices.size(); i++) {
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mesh_vb[i].m_x = vertices[i][0];
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mesh_vb[i].m_y = vertices[i][1];
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mesh_vb[i].m_z = vertices[i][2];
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if (have_normals) {
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mesh_vb[i].m_normal = packF4u (-normals[i][0], -normals[i][1], -normals[i][2]);
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} else {
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mesh_vb[i].m_normal = 0;
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}
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if (have_colors) {
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mesh_vb[i].m_rgba = packF4u (colors[i][0], colors[i][1], colors[i][2], colors[i][3]);
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} else {
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mesh_vb[i].m_rgba = packF4u (1.f, 1.f, 1.f, 1.f);
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}
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mesh_ib[i] = i;
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}
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mesh_load(result, mesh_vb, vertices.size(), PosNormalColorVertex::ms_decl, mesh_ib, vertices.size());
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return result;
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}
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Mesh *createCuboid (float width, float height, float depth) {
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// work arrays that we fill with data
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std::vector<Vector4f> vertices;
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std::vector<Vector3f> normals;
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std::vector<Vector4f> colors;
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Vector4f v0 ( 0.5 * width, -0.5 * height, 0.5 * depth, 1.f);
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Vector4f v1 ( 0.5 * width, -0.5 * height, -0.5 * depth, 1.f);
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Vector4f v2 ( 0.5 * width, 0.5 * height, -0.5 * depth, 1.f);
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Vector4f v3 ( 0.5 * width, 0.5 * height, 0.5 * depth, 1.f);
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Vector4f v4 ( -0.5 * width, -0.5 * height, 0.5 * depth, 1.f);
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Vector4f v5 ( -0.5 * width, -0.5 * height, -0.5 * depth, 1.f);
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Vector4f v6 ( -0.5 * width, 0.5 * height, -0.5 * depth, 1.f);
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Vector4f v7 ( -0.5 * width, 0.5 * height, 0.5 * depth, 1.f);
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Vector3f normal;
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// +x
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normal = Vector3f (1., 0., 0.);
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vertices.push_back(v0);
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normals.push_back(normal);
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vertices.push_back(v1);
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normals.push_back(normal);
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vertices.push_back(v2);
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normals.push_back(normal);
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vertices.push_back(v2);
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normals.push_back(normal);
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vertices.push_back(v3);
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normals.push_back(normal);
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vertices.push_back(v0);
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normals.push_back(normal);
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// +y
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normal = Vector3f (0., 1., 0.);
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vertices.push_back(v3);
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normals.push_back(normal);
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vertices.push_back(v2);
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normals.push_back(normal);
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vertices.push_back(v6);
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normals.push_back(normal);
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vertices.push_back(v6);
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normals.push_back(normal);
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vertices.push_back(v7);
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normals.push_back(normal);
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vertices.push_back(v3);
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normals.push_back(normal);
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// +z
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normal = Vector3f (0., 0., 1.);
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vertices.push_back(v4);
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normals.push_back(normal);
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vertices.push_back(v0);
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normals.push_back(normal);
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vertices.push_back(v3);
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normals.push_back(normal);
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vertices.push_back(v3);
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normals.push_back(normal);
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vertices.push_back(v7);
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normals.push_back(normal);
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vertices.push_back(v4);
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normals.push_back(normal);
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// -x
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normal = Vector3f (-1., 0., 0.);
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vertices.push_back(v5);
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normals.push_back(normal);
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vertices.push_back(v4);
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normals.push_back(normal);
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vertices.push_back(v7);
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normals.push_back(normal);
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vertices.push_back(v7);
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normals.push_back(normal);
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vertices.push_back(v6);
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normals.push_back(normal);
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vertices.push_back(v5);
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normals.push_back(normal);
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// -y
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normal = Vector3f (0., -1., 0.);
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vertices.push_back(v0);
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normals.push_back(normal);
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vertices.push_back(v4);
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normals.push_back(normal);
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vertices.push_back(v5);
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normals.push_back(normal);
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vertices.push_back(v5);
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normals.push_back(normal);
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vertices.push_back(v1);
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normals.push_back(normal);
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vertices.push_back(v0);
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normals.push_back(normal);
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// -z
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normal = Vector3f (0., 0., -1.);
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vertices.push_back(v1);
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normals.push_back(normal);
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vertices.push_back(v5);
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normals.push_back(normal);
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vertices.push_back(v6);
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normals.push_back(normal);
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vertices.push_back(v6);
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normals.push_back(normal);
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vertices.push_back(v2);
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normals.push_back(normal);
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vertices.push_back(v1);
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normals.push_back(normal);
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return createMeshFromStdVectors (vertices, normals, colors);
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}
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Mesh *createUVSphere (int rows, int segments) {
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// work arrays that we fill with data
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std::vector<Vector4f> vertices;
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@ -987,42 +1146,83 @@ Mesh *createUVSphere (int rows, int segments) {
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}
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}
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// create and copy the data into the actual mesh
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Mesh* result = new Mesh();
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PosNormalColorVertex::init();
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bool have_normals = normals.size() > 0;
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bool have_colors = colors.size() > 0;
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uint16_t stride = PosNormalColorVertex::ms_decl.getStride();
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const bgfx::Memory* vb_mem = bgfx::alloc (vertices.size() * stride);
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PosNormalColorVertex* mesh_vb = (PosNormalColorVertex*) vb_mem;
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const bgfx::Memory* ib_mem = bgfx::alloc (sizeof(uint16_t) * vertices.size());
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uint16_t* mesh_ib = (uint16_t*) ib_mem;
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for (unsigned int i = 0; i < vertices.size(); i++) {
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mesh_vb[i].m_x = vertices[i][0];
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mesh_vb[i].m_y = vertices[i][1];
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mesh_vb[i].m_z = vertices[i][2];
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if (have_normals) {
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mesh_vb[i].m_normal = packF4u (-normals[i][0], -normals[i][1], -normals[i][2]);
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} else {
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mesh_vb[i].m_normal = 0;
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return createMeshFromStdVectors (vertices, normals, colors);
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}
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if (have_colors) {
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mesh_vb[i].m_rgba = packF4u (colors[i][0], colors[i][1], colors[i][2], colors[i][3]);
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} else {
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mesh_vb[i].m_rgba = packF4u (1.f, 1.f, 1.f, 1.f);
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Mesh *createCylinder (int segments) {
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// work arrays that we fill with data
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std::vector<Vector4f> vertices;
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std::vector<Vector3f> normals;
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std::vector<Vector4f> colors;
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float delta = 2. * M_PI / static_cast<float>(segments);
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for (unsigned int i = 0; i < segments; i++) {
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float r0 = (i - 0.5) * delta;
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float r1 = (i + 0.5) * delta;
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float c0 = cos (r0);
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float s0 = sin (r0);
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float c1 = cos (r1);
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float s1 = sin (r1);
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Vector3f normal0 (-c0, -s0, 0.f);
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Vector3f normal1 (-c1, -s1, 0.f);
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Vector4f normal0_4 (-c0, -s0, 0.f, 0.f);
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Vector4f normal1_4 (-c1, -s1, 0.f, 0.f);
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Vector4f p0 = normal0_4 + Vector4f (0., 0., 0.5f, 1.0f);
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Vector4f p1 = normal0_4 + Vector4f (0., 0., -0.5f, 1.0f);
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Vector4f p2 = normal1_4 + Vector4f (0., 0., 0.5f, 1.0f);
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Vector4f p3 = normal1_4 + Vector4f (0., 0., -0.5f, 1.0f);
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// side triangle 1
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vertices.push_back(p0);
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normals.push_back(normal0);
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vertices.push_back(p1);
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normals.push_back(normal0);
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vertices.push_back(p2);
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normals.push_back(normal1);
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// side triangle 2
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vertices.push_back(p2);
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normals.push_back(normal1);
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vertices.push_back(p1);
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normals.push_back(normal0);
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vertices.push_back(p3);
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normals.push_back(normal1);
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// upper end triangle
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Vector3f normal (0.f, 0.f, 1.f);
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vertices.push_back(p0);
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normals.push_back(normal);
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vertices.push_back(p2);
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normals.push_back(normal);
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vertices.push_back(Vector4f (0.f, 0.f, 0.5f, 1.0f));
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normals.push_back(normal);
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// lower end triangle
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normal = Vector3f(0.f, 0.f, -1.f);
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vertices.push_back(p3);
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normals.push_back(normal);
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vertices.push_back(p1);
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normals.push_back(normal);
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vertices.push_back(Vector4f (0.f, 0.f, -0.5f, 1.0f));
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normals.push_back(normal);
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}
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mesh_ib[i] = i;
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}
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mesh_load(result, mesh_vb, vertices.size(), PosNormalColorVertex::ms_decl, mesh_ib, vertices.size());
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return result;
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return createMeshFromStdVectors (vertices, normals, colors);
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}
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}
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@ -55,7 +55,9 @@ namespace bgfxutils {
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// Loads the mesh data from a VBO into a bgfx Mesh
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// Mesh *createMeshFromVBO (const MeshVBO& mesh_buffer);
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Mesh *createCuboid (float width, float height, float depth);
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Mesh *createUVSphere (int rows, int segments);
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Mesh *createCylinder (int segments);
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}
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#endif
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@ -275,6 +275,7 @@ static void module_reload(struct module_state *state) {
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cout << "Creating render entity mesh ..." << endl;
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state->character->entity->mesh = bgfxutils::createUVSphere (45, 45);
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// state->character->entity->mesh = bgfxutils::createCylinder (20);
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cout << "Creating render entity mesh ... success!" << endl;
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// load the state of the entity
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