PlyLoaderTest.kt
src/jvmMain/kotlin/afield/examples/four/PlyLoaderTest.kt · 215 lines
package afield.examples.four
import afield.graphics.scene.PlySupport
import java.io.Filefun main()
Simple test program to verify PLY loader functionality without requiring full graphics setup
body — 206 lines, from line 9
fun main() {
val testDir = File(System.getProperty("java.io.tmpdir"), "ply_test")
println("PLY Loader Test")
println("================")
// Test 1: ASCII Triangle Mesh
println("\nTest 1: ASCII Triangle Mesh")
try {
val testFile = File(testDir, "test_ascii.ply")
if (testFile.exists()) {
val model = PlySupport.loadPly(testFile.absolutePath)
println("✓ Successfully loaded: ${model.name}")
println(" - Vertices: ${model.buffers.vertexCount}")
println(" - Indices: ${model.buffers.indexCount}")
println(" - Has colors: ${model.buffers.hasColors}")
println(" - Has normals: ${model.buffers.hasNormals}")
println(" - Is point cloud: ${model.buffers.isPointCloud}")
if (model.buffers.vertexCount != 4) {
println("✗ ERROR: Expected 4 vertices, got ${model.buffers.vertexCount}")
}
if (model.buffers.indexCount != 6) {
println("✗ ERROR: Expected 6 indices, got ${model.buffers.indexCount}")
}
if (!model.buffers.hasColors) {
println("✗ ERROR: Expected colors to be present")
}
if (!model.buffers.hasNormals) {
println("✗ ERROR: Expected normals to be present")
}
if (model.buffers.isPointCloud) {
println("✗ ERROR: Should not be detected as point cloud")
}
} else {
println("✗ Test file not found: ${testFile.absolutePath}")
println(" Creating test file...")
testFile.parentFile.mkdirs()
testFile.writeText("""
ply
format ascii 1.0
comment Test PLY file - ASCII format
element vertex 4
property float x
property float y
property float z
property float nx
property float ny
property float nz
property uchar red
property uchar green
property uchar blue
element face 2
property list uchar int vertex_indices
end_header
0.0 0.0 0.0 0.0 0.0 1.0 255 0 0
1.0 0.0 0.0 0.0 0.0 1.0 0 255 0
1.0 1.0 0.0 0.0 0.0 1.0 0 0 255
0.0 1.0 0.0 0.0 0.0 1.0 255 255 0
3 0 1 2
3 0 2 3
""".trimIndent())
println(" Test file created. Run again to test.")
}
} catch (e: Exception) {
println("✗ Error: ${e.message}")
e.printStackTrace()
}
// Test 2: ASCII Point Cloud
println("\nTest 2: ASCII Point Cloud")
try {
val testFile = File(testDir, "test_pointcloud.ply")
if (testFile.exists()) {
val model = PlySupport.loadPly(testFile.absolutePath)
println("✓ Successfully loaded: ${model.name}")
println(" - Vertices: ${model.buffers.vertexCount}")
println(" - Indices: ${model.buffers.indexCount}")
println(" - Has colors: ${model.buffers.hasColors}")
println(" - Has normals: ${model.buffers.hasNormals}")
println(" - Is point cloud: ${model.buffers.isPointCloud}")
if (model.buffers.vertexCount != 8) {
println("✗ ERROR: Expected 8 vertices, got ${model.buffers.vertexCount}")
}
if (!model.buffers.isPointCloud) {
println("✗ ERROR: Should be detected as point cloud")
}
if (!model.buffers.hasColors) {
println("✗ ERROR: Expected colors to be present")
}
} else {
println("✗ Test file not found: ${testFile.absolutePath}")
println(" Creating test file...")
testFile.parentFile.mkdirs()
testFile.writeText("""
ply
format ascii 1.0
comment Test PLY file - Point cloud
element vertex 8
property float x
property float y
property float z
property float nx
property float ny
property float nz
property uchar red
property uchar green
property uchar blue
end_header
-1.0 -1.0 -1.0 -0.577 -0.577 -0.577 255 0 0
1.0 -1.0 -1.0 0.577 -0.577 -0.577 0 255 0
1.0 1.0 -1.0 0.577 0.577 -0.577 0 0 255
-1.0 1.0 -1.0 -0.577 0.577 -0.577 255 255 0
-1.0 -1.0 1.0 -0.577 -0.577 0.577 255 0 255
1.0 -1.0 1.0 0.577 -0.577 0.577 0 255 255
1.0 1.0 1.0 0.577 0.577 0.577 255 255 255
-1.0 1.0 1.0 -0.577 0.577 0.577 128 128 128
""".trimIndent())
println(" Test file created. Run again to test.")
}
} catch (e: Exception) {
println("✗ Error: ${e.message}")
e.printStackTrace()
}
// Test 3: Minimal PLY (no colors, no normals)
println("\nTest 3: Minimal PLY (positions only)")
try {
val testFile = File(testDir, "test_minimal.ply")
testFile.parentFile.mkdirs()
testFile.writeText("""
ply
format ascii 1.0
element vertex 3
property float x
property float y
property float z
element face 1
property list uchar int vertex_indices
end_header
0.0 0.0 0.0
1.0 0.0 0.0
0.5 1.0 0.0
3 0 1 2
""".trimIndent())
val model = PlySupport.loadPly(testFile.absolutePath)
println("✓ Successfully loaded: ${model.name}")
println(" - Vertices: ${model.buffers.vertexCount}")
println(" - Indices: ${model.buffers.indexCount}")
println(" - Has colors: ${model.buffers.hasColors}")
println(" - Has normals: ${model.buffers.hasNormals}")
if (model.buffers.hasColors) {
println("✗ ERROR: Should not have colors")
}
if (model.buffers.hasNormals) {
println("✗ ERROR: Should not have normals")
}
} catch (e: Exception) {
println("✗ Error: ${e.message}")
e.printStackTrace()
}
// Test 4: Polygon triangulation (quad)
println("\nTest 4: Polygon Triangulation (Quad)")
try {
val testFile = File(testDir, "test_quad.ply")
testFile.parentFile.mkdirs()
testFile.writeText("""
ply
format ascii 1.0
element vertex 4
property float x
property float y
property float z
element face 1
property list uchar int vertex_indices
end_header
0.0 0.0 0.0
1.0 0.0 0.0
1.0 1.0 0.0
0.0 1.0 0.0
4 0 1 2 3
""".trimIndent())
val model = PlySupport.loadPly(testFile.absolutePath)
println("✓ Successfully loaded: ${model.name}")
println(" - Vertices: ${model.buffers.vertexCount}")
println(" - Indices: ${model.buffers.indexCount}")
// Quad should be triangulated to 6 indices (2 triangles)
if (model.buffers.indexCount != 6) {
println("✗ ERROR: Quad should be triangulated to 6 indices, got ${model.buffers.indexCount}")
} else {
println("✓ Quad correctly triangulated to 2 triangles")
}
} catch (e: Exception) {
println("✗ Error: ${e.message}")
e.printStackTrace()
}
println("\n================")
println("Tests completed!")
}