57 lines
1.4 KiB
Odin
57 lines
1.4 KiB
Odin
package collision
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import lg "core:math/linalg"
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import "game:debug"
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import rl "vendor:raylib"
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import "vendor:raylib/rlgl"
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debug_plane_verts := []Vec3{{-1, -1, 0}, {1, -1, 0}, {1, 1, 0}, {-1, 1, 0}}
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debug_plane_indices := []u16{0, 1, 2, 2, 3, 0}
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debug_plane_mesh := rl.Mesh {
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vertices = cast([^]f32)&debug_plane_verts[0],
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indices = &debug_plane_indices[0],
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vertexCount = i32(len(debug_plane_verts)),
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triangleCount = i32(len(debug_plane_indices)) / 3,
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}
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debug_draw_plane :: proc(center: Vec3, plane: Plane, color: rl.Color) {
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assert(abs(signed_distance_plane(center, plane)) < 0.001, "point should be on a plane")
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{
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rlgl.Begin(rlgl.TRIANGLES)
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defer rlgl.End()
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debug.rlgl_color(color)
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up := Vec3{0, 1, 0}
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if lg.dot(up, plane.normal) > 1.0 - 0.0001 {
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up = Vec3{1, 0, 0}
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}
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mat := rl.MatrixLookAt(0, plane.normal, up)
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trans := rl.Matrix(1)
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trans[3][0] = center.x
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trans[3][1] = center.y
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trans[3][2] = center.z
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mat = mat * trans
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debug.rlgl_transform_scope(mat)
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for i in 0 ..< len(debug_plane_indices) / 3 {
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i1, i2, i3 :=
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debug_plane_indices[i * 3 + 0],
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debug_plane_indices[i * 3 + 1],
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debug_plane_indices[i * 3 + 2]
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v1, v2, v3 := debug_plane_verts[i1], debug_plane_verts[i2], debug_plane_verts[i3]
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debug.rlgl_vertex3v(v1)
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debug.rlgl_vertex3v(v2)
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debug.rlgl_vertex3v(v3)
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debug.rlgl_vertex3v(v3)
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debug.rlgl_vertex3v(v2)
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debug.rlgl_vertex3v(v1)
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}
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}
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}
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