List of usage examples for com.badlogic.gdx.graphics VertexAttributes get
public VertexAttribute get(int index)
From source file:com.gemserk.commons.gdx.graphics.Gdx2dMeshBuilder.java
License:Apache License
public static int getOffset(VertexAttributes vertexAttributes, int usage) { int len = vertexAttributes.size(); for (int i = 0; i < len; i++) if (vertexAttributes.get(i).usage == usage) return vertexAttributes.get(i).offset / 4; return 0;/* ww w .ja v a 2s .co m*/ }
From source file:com.lyeeedar.Roguelike3D.Graphics.Models.Shapes.java
License:Open Source License
public static Mesh insertLight(Mesh mesh, LightManager lights, boolean bakeStatics, Matrix4 model_matrix) { VertexAttributes attributes = mesh.getVertexAttributes(); final int vertCount = mesh.getNumVertices(); final int vertexSize = attributes.vertexSize / 4; VertexAttribute[] newAttributes = new VertexAttribute[attributes.size() + 1]; for (int i = 0; i < attributes.size(); i++) { newAttributes[i] = attributes.get(i); }/* ww w.j a v a2 s. c o m*/ newAttributes[attributes.size()] = new VertexAttribute(Usage.Generic, 3, "a_baked_light"); final int newVertexSize = vertexSize + 3; float[] verts = new float[vertexSize * vertCount]; mesh.getVertices(verts); short[] indices = new short[mesh.getNumIndices()]; mesh.getIndices(indices); float[] newVerts = new float[newVertexSize * vertCount]; int positionOffset = attributes.getOffset(Usage.Position); int normalOffset = attributes.getOffset(Usage.Normal); Matrix4 normal_matrix = new Matrix4(); normal_matrix.set(model_matrix); Vector3 position = new Vector3(); for (int i = 0; i < vertCount; i++) { int j = 0; for (; j < vertexSize; j++) { newVerts[(i * newVertexSize) + j] = verts[(i * vertexSize) + j]; } position.set(verts[(i * vertexSize) + positionOffset], verts[(i * vertexSize) + positionOffset + 1], verts[(i * vertexSize) + positionOffset + 2]).mul(model_matrix); Vector3 normal = new Vector3(verts[(i * vertexSize) + normalOffset], verts[(i * vertexSize) + normalOffset + 1], verts[(i * vertexSize) + normalOffset + 2]); normal.rot(normal_matrix).nor(); Color light_colour = lights.calculateLightAtPoint(position, normal, bakeStatics); newVerts[(i * newVertexSize) + j + 0] = light_colour.r; newVerts[(i * newVertexSize) + j + 1] = light_colour.g; newVerts[(i * newVertexSize) + j + 2] = light_colour.b; } Mesh newMesh = new Mesh(true, mesh.getNumVertices(), mesh.getNumIndices(), newAttributes); newMesh.setVertices(newVerts); newMesh.setIndices(indices); return newMesh; }
From source file:com.lyeeedar.Roguelike3D.Graphics.Models.Shapes.java
License:Open Source License
public static Mesh insertTangents(Mesh mesh) { VertexAttributes attributes = mesh.getVertexAttributes(); final int vertCount = mesh.getNumVertices(); final int vertexSize = attributes.vertexSize / 4; VertexAttribute[] newAttributes = new VertexAttribute[attributes.size() + 1]; for (int i = 0; i < attributes.size(); i++) { newAttributes[i] = attributes.get(i); }/*from ww w. j a v a 2s . c o m*/ newAttributes[attributes.size()] = new VertexAttribute(Usage.Generic, 4, "a_tangent"); final int newVertexSize = vertexSize + 4; float[] verts = new float[vertexSize * vertCount]; mesh.getVertices(verts); short[] indices = new short[mesh.getNumIndices()]; mesh.getIndices(indices); float[] newVerts = new float[newVertexSize * vertCount]; int positionOffset = attributes.getOffset(Usage.Position); int normalOffset = attributes.getOffset(Usage.Normal); int textureOffset = attributes.getOffset(Usage.TextureCoordinates); int tangentOffset = 0; for (int i = 0; i < vertCount; i += 3) { int j = 0; for (; j < vertexSize; j++) { newVerts[(i * newVertexSize) + j] = verts[(i * vertexSize) + j]; newVerts[((i + 1) * newVertexSize) + j] = verts[((i + 1) * vertexSize) + j]; newVerts[((i + 2) * newVertexSize) + j] = verts[((i + 2) * vertexSize) + j]; } tangentOffset = j; } for (int i = 0; i < mesh.getNumIndices(); i += 3) { int i1 = indices[i]; int i2 = indices[i + 1]; int i3 = indices[i + 2]; Vector3 v1 = new Vector3(verts[(i1 * vertexSize) + positionOffset], verts[(i1 * vertexSize) + positionOffset] + 1, verts[(i1 * vertexSize) + positionOffset] + 2); Vector3 v2 = new Vector3(verts[(i2 * vertexSize) + positionOffset], verts[(i2 * vertexSize) + positionOffset] + 1, verts[(i2 * vertexSize) + positionOffset] + 2); Vector3 v3 = new Vector3(verts[(i3 * vertexSize) + positionOffset], verts[(i3 * vertexSize) + positionOffset] + 1, verts[(i3 * vertexSize) + positionOffset] + 2); float[] w1 = { verts[(i1 * vertexSize) + textureOffset], verts[(i1 * vertexSize) + textureOffset] + 1 }; float[] w2 = { verts[(i2 * vertexSize) + textureOffset], verts[(i2 * vertexSize) + textureOffset] + 1 }; float[] w3 = { verts[(i3 * vertexSize) + textureOffset], verts[(i3 * vertexSize) + textureOffset] + 1 }; float x1 = v2.x - v1.x; float x2 = v3.x - v1.x; float y1 = v2.y - v1.y; float y2 = v3.y - v1.y; float z1 = v2.z - v1.z; float z2 = v3.z - v1.z; float s1 = w2[0] - w1[0]; float s2 = w3[0] - w1[0]; float t1 = w2[1] - w1[1]; float t2 = w3[1] - w1[1]; float div = s1 * t2 - s2 * t1; float r = div == 0.0f ? 0.0f : 1.0f / div; Vector3 t = new Vector3((t2 * x1 - t1 * x2) * r, (t2 * y1 - t1 * y2) * r, (t2 * z1 - t1 * z2) * r); Vector3 n = new Vector3(verts[(i1 * vertexSize) + normalOffset], verts[(i1 * vertexSize) + normalOffset] + 1, verts[(i1 * vertexSize) + normalOffset] + 2); //Vector3 tangent = t.cpy().sub(n).mul(n.tmp().dot(t)).nor(); Vector3 tangent = orthoNormalize(n, t); System.out.println(t2); Vector3 tan2 = new Vector3((s1 * x2 - s2 * x1) * r, (s1 * y2 - s2 * y1) * r, (s1 * z2 - s2 * z1) * r); float handedness = (n.tmp().crs(t).dot(tan2) < 0.0f) ? -1.0f : 1.0f; Vector3 c1 = n.cpy().crs(0.0f, 0.0f, 1.0f); Vector3 c2 = n.cpy().crs(0.0f, 1.0f, 0.0f); if (c1.len2() > c2.len2()) { tangent = c1; } else { tangent = c2; } newVerts[(i1 * newVertexSize) + tangentOffset] = tangent.x; newVerts[(i1 * newVertexSize) + tangentOffset + 1] = tangent.y; newVerts[(i1 * newVertexSize) + tangentOffset + 2] = tangent.z; newVerts[(i1 * newVertexSize) + tangentOffset + 3] = handedness; newVerts[(i2 * newVertexSize) + tangentOffset] = tangent.x; newVerts[(i2 * newVertexSize) + tangentOffset + 1] = tangent.y; newVerts[(i2 * newVertexSize) + tangentOffset + 2] = tangent.z; newVerts[(i2 * newVertexSize) + tangentOffset + 3] = handedness; newVerts[(i3 * newVertexSize) + tangentOffset] = tangent.x; newVerts[(i3 * newVertexSize) + tangentOffset + 1] = tangent.y; newVerts[(i3 * newVertexSize) + tangentOffset + 2] = tangent.z; newVerts[(i3 * newVertexSize) + tangentOffset + 3] = handedness; } Mesh newMesh = new Mesh(true, mesh.getNumVertices(), mesh.getNumIndices(), newAttributes); newMesh.setVertices(newVerts); newMesh.setIndices(indices); return newMesh; }