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Added GetCollisionRayModel

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lumaio teon
2018-04-06 12:04:09 -04:00
parent b8bd1d2ea6
commit d003c23ecf
3 changed files with 48 additions and 0 deletions
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release/libs/win32/mingw32/libraylib.a
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47
src/models.c
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@@ -2008,6 +2008,53 @@ RayHitInfo GetCollisionRayMesh(Ray ray, Mesh *mesh)
return result;
}
// Get collision info between ray and model
// NOTE: This is an exact clone of GetCollisionRayMesh but applies transformation matrix from the model to the vertices
RayHitInfo GetCollisionRayModel(Ray ray, Model *model)
{
RayHitInfo result = { 0 };
// If mesh doesn't have vertex data on CPU, can't test it.
if (!model->mesh.vertices) return result;
// model->mesh.triangleCount may not be set, vertexCount is more reliable
int triangleCount = model->mesh.vertexCount/3;
// Test against all triangles in mesh
for (int i = 0; i < triangleCount; i++)
{
Vector3 a, b, c;
Vector3 *vertdata = (Vector3 *)model->mesh.vertices;
if (model->mesh.indices)
{
a = vertdata[model->mesh.indices[i*3 + 0]];
b = vertdata[model->mesh.indices[i*3 + 1]];
c = vertdata[model->mesh.indices[i*3 + 2]];
}
else
{
a = vertdata[i*3 + 0];
b = vertdata[i*3 + 1];
c = vertdata[i*3 + 2];
}
a = Vector3Transform(a, model->transform);
b = Vector3Transform(b, model->transform);
c = Vector3Transform(c, model->transform);
RayHitInfo triHitInfo = GetCollisionRayTriangle(ray, a, b, c);
if (triHitInfo.hit)
{
// Save the closest hit triangle
if ((!result.hit) || (result.distance > triHitInfo.distance)) result = triHitInfo;
}
}
return result;
}
// Get collision info between ray and triangle
// NOTE: Based on https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm
RayHitInfo GetCollisionRayTriangle(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3)

1
src/raylib.h
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@@ -1053,6 +1053,7 @@ RLAPI bool CheckCollisionRaySphereEx(Ray ray, Vector3 spherePosition, float sphe
Vector3 *collisionPoint); // Detect collision between ray and sphere, returns collision point
RLAPI bool CheckCollisionRayBox(Ray ray, BoundingBox box); // Detect collision between ray and box
RLAPI RayHitInfo GetCollisionRayMesh(Ray ray, Mesh *mesh); // Get collision info between ray and mesh
RLAPI RayHitInfo GetCollisionRayModel(Ray ray, Model *model); // Get collision info between ray and model
RLAPI RayHitInfo GetCollisionRayTriangle(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3); // Get collision info between ray and triangle
RLAPI RayHitInfo GetCollisionRayGround(Ray ray, float groundHeight); // Get collision info between ray and ground plane (Y-normal plane)