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flip camera wireframe direction

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Nick Fisher
2024-11-30 16:00:12 +08:00
parent 5fe985d2c7
commit e43e1c9cbd
1 changed files with 13 additions and 13 deletions
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26
thermion_dart/lib/src/utils/src/geometry.dart
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@@ -394,7 +394,7 @@ static Geometry cube({bool normals = true, bool uvs = true}) {
// Add center point of sphere for frustum lines // Add center point of sphere for frustum lines
int sphereCenterIndex = verticesList.length ~/ 3; int sphereCenterIndex = verticesList.length ~/ 3;
verticesList.addAll([0, 0, 0]); // Sphere center at origin verticesList.addAll([0, 0, 0]); // Sphere center at origin
normalsList.addAll([0, 0, 1]); // Forward-facing normal normalsList.addAll([0, 0, -1]); // Backward-facing normal
uvsList.addAll([0.5, 0.5]); // Center UV coordinate uvsList.addAll([0.5, 0.5]); // Center UV coordinate
// Calculate frustum corners // Calculate frustum corners
@@ -406,26 +406,26 @@ static Geometry cube({bool normals = true, bool uvs = true}) {
// Store starting index for frustum vertices // Store starting index for frustum vertices
int nearBaseIndex = verticesList.length ~/ 3; int nearBaseIndex = verticesList.length ~/ 3;
// Add near rectangle vertices // Add near rectangle vertices (negative z)
verticesList.addAll([ verticesList.addAll([
-nearWidth/2, -nearHeight/2, frustumNear, // Bottom-left -nearWidth/2, -nearHeight/2, -frustumNear, // Bottom-left
nearWidth/2, -nearHeight/2, frustumNear, // Bottom-right nearWidth/2, -nearHeight/2, -frustumNear, // Bottom-right
nearWidth/2, nearHeight/2, frustumNear, // Top-right nearWidth/2, nearHeight/2, -frustumNear, // Top-right
-nearWidth/2, nearHeight/2, frustumNear, // Top-left -nearWidth/2, nearHeight/2, -frustumNear, // Top-left
]); ]);
// Add far rectangle vertices // Add far rectangle vertices (negative z)
int farBaseIndex = verticesList.length ~/ 3; int farBaseIndex = verticesList.length ~/ 3;
verticesList.addAll([ verticesList.addAll([
-farWidth/2, -farHeight/2, frustumFar, // Bottom-left -farWidth/2, -farHeight/2, -frustumFar, // Bottom-left
farWidth/2, -farHeight/2, frustumFar, // Bottom-right farWidth/2, -farHeight/2, -frustumFar, // Bottom-right
farWidth/2, farHeight/2, frustumFar, // Top-right farWidth/2, farHeight/2, -frustumFar, // Top-right
-farWidth/2, farHeight/2, frustumFar, // Top-left -farWidth/2, farHeight/2, -frustumFar, // Top-left
]); ]);
// Add normals and UVs for frustum vertices // Add normals and UVs for frustum vertices
for (int i = 0; i < 8; i++) { for (int i = 0; i < 8; i++) {
normalsList.addAll([0, 0, 1]); normalsList.addAll([0, 0, -1]); // Backward-facing normal
uvsList.addAll([0, 0]); uvsList.addAll([0, 0]);
} }
@@ -453,7 +453,7 @@ static Geometry cube({bool normals = true, bool uvs = true}) {
nearBaseIndex + 3, farBaseIndex + 3 // Top-left nearBaseIndex + 3, farBaseIndex + 3 // Top-left
]); ]);
// Add lines from sphere center (using actual center point 0,0,0) to near corners // Add lines from sphere center to near corners
indices.addAll([ indices.addAll([
sphereCenterIndex, nearBaseIndex, // To near bottom-left sphereCenterIndex, nearBaseIndex, // To near bottom-left
sphereCenterIndex, nearBaseIndex + 1, // To near bottom-right sphereCenterIndex, nearBaseIndex + 1, // To near bottom-right